Can plaster/render be applied on top of this paint, followed by conventional wall paint?

No, Zinsser Watertite isn't recommended to be over-coated with plaster or render.

My front door leads directly into my lounge. The exterior wall at right angles to the door has a damp patch, which appears to be coming from the exterior wall next to the door. This wall is painted, but the paint is peeling. I understand this paint should be used on bare brick, but I can't remove the paint. Will this work or should I use something else?

Zinsser Watertite works best when applied to bare masonry surfaces, we would recommend removing the old paint prior to application. If the existing paint/plaster cannot be removed back down to a bare substrate such as brickwork, blockwork or concrete we would recommend Coo-Var Anti-Damp Paint .

Hi, The first 500mm of our external wall is below street level. We are seeing slow but consistent damp and acknowledge there will need to be regular maintenance as we cant feasibility stop the source of the damp. We are looking to strip the existing plaster to bare brick but only to approx 1m high. I understand this product is a 2 layer system, but would it be possible to add further layers this product for it to meet the depth of the existing (undamp) plaster and sanded back give a smoother almost invisible join?

Unfortunately no, this product should only have a maximum of 2 coats applied to a bare prepared substrate for the system to work. If the product is applied only to a certain height, this will cause the system to fail as moisture getting in behind the coating will spread and form where the ridge will be at 1m high.

I have had a door replaced with breeze blocks in my garage but rainwater seeps through the area - would this paint be suitable to waterproof the breeze block area please?

While this product can hold back 34psi of pressure when applied to bare compatible substrate, due to the porosity of breeze blocks this may not solve the issue. Please can you provide more information and pictures of the internal and external areas in question to technical@rawlinspaints.com so we can assist.

On the exterior surface of an exterior brick wall the two coarses of bricks below the damp proof layer are badly affected by efflorescence and are very unsightly. I plan to use efflorescence remover then treat with fungicide . I would then like to paint these two brick coarses. Could you please advise as to which is the best paint for this use

For application to clean, dry, sound brickwork below a damp proof membrane we would recommend to use a bitumen based paint such as Tor Non-Tainting Bitumen Solution

On an external wall the two rows of bricks under the damp proof coarse are very unsightly .Covered in efflorescence .I am going to apply efflorescence remover but am wondering if I can then paint Zinsser Watertite on afterwards to make this area look better

Yes assuming the brick wall is bare, clean, dry and sound this can be applied.

Can I paint Zinsser Watertite over existing exterior masonry paint I want to be sure the paint on an exterior wall is the most water tight I can find and the wall is susceptible to algae. Existing paint looks in decent condo and not flaking.

Unfortunately no, this product should only be applied to a bare substrate such as brick or block work.

Hi Rawlins Team, We have a smallish room which smells of damp, although there are no signs of actual wetness. We want a product to paint the concrete floor which can be overlaid with an underlay then carpet. Would Zinsser Watertite do the job?Could it also be used to paint the walls which have been plastered and painted? We'd like to overpaint it afterwards. Many thanks for your help! Jon

Unfortunately no, this product would not be suitable for application to a plastered wall or a concrete floor. Assuming the plastered walls are clean, sound and prepared as detailed in the technical data sheet we can recommend Coo-Var Anti-Damp Paint for this application. For the concrete floor assuming you are looking for a surface applied damp proof membrane, the floor is clean, dry, sound and prepared as detailed in the technical data sheet we can recommend N-Virol Superseal Plus Damp Proofing DPM Paint .

Hi, We have a board burner in the living room and the bricks around it suffer badly with salts. I regularly treat the bricks with salt neutraliser. I've decided to paint the bricks around the burner and I've jumped the gun and bought the zinsser watertite paint but now I'm worried (feel rather sick actually) that it's not going to withstand the temperatures around the wood burner and the paint was very expensive! Please can you help me? The wall has a distance of just over a foot at the sides of the burner and and 5" at the back. I'm praying that you're going to tell me the paint will be ok since it cost me £100! Kind regards, Alison

It has not been tested for this. It’s designed to handle moist and wet surfaces like retaining walls… rather than hot and dry. Therefore, it is impossible to say what will happen here.

Hi I have a damp basement which I have tanked out but this hasnt really worked as the tanking has "blown" away from the wall despite using Sika Bond first. I was thinking of removing the tanking on the wall with the problem and replaing it with this Watertite paint. In the concrete floor I have used a 2 part epoxy paint which has been brilliant. What would you recommedn for the damp wall? Thanks

Watertite can hold back upto 34psi of pressure when applied to a suitable substrate but it is not a tanking system. If you wish to use Watertite the failed tanking system should be removed first, but addressing the issue of the blown system and reapplying a Sika 1 Waterproofing System would be advised.

Can I use this on plywood pleas? A section of my garage has been insulated & boarded out to be used as a pet grooming studio & the walls will be subjected a degree of water spray from shaking wet dogs & accidental shower spray, will this be suitable?

This product is not suitable for use on plywood, assuming the timber is clean, dry, sound and prepared as detailed in the techncial data sheet we can recommend Teamac Metaclor Antifouling Primer followed by 2 coats of Teamac Chlorvar Chlorinated Rubber Paint . This can be mixed to many RAL and BS colours in a gloss finish, but this is not animal safe.

An inner wall in my apartment is always damp bordering on wet, with the paint crumbling and bubbling. I suspect there is a leak from the kitchen pipes in one of the apartments in a higher floor which causes water to run down the shared walls, but even after a thorough investigation, I could not discover where the source is, as some people wouldn't let me in to check. I recently pealed the crumbling paint and rendered the wall, but i can't paint over the render with regular paint because it does not completely dry up. Can I use WaterTite on the render as paint that will stop the dampness?

This product is designed to be applied to a bare substrate such as brick and we would not recommend it is applied to plaster or render. The cause of the leak must be addressed and the substrate allowed to dry prior to application of any paint. At this point assuming the wall is clean ,dry, sound and prepared as detailed in the techncial data sheet we can recommend Coo-Var Anti-Damp Paint . This contains an active reagent that will aid dealing with any remaining surface moisture, but this will only be a temporary solution and will ultimately fail unless the leak is found and repaired. It can also be overpainted for decorative purposes.

Hi, I had a front Porch built 5 years ago. Not sure what the root cause is, but every winter the inner walls collect a lot of condensation, even just touching the walls makes the hands wet. The porch is well ventilated all through the year via a small window that's always kept open but this doesn't resolve the condensation issue. I have fixed subsisdence cracks and repointed problem areas this year. will painting inside walls using Zinsser watertite paint help? I don't think I will be able to get rid of the existing paint fully. Should I use a Damp Seal Paint first/instead of this Product? Any advice would be much appreciated!

Watertite is designed to aid dealing with moisture travelling through the walls when applied to a bare substrate. As you mention condensation you may want to consider Coo-Var Anti-Condensation Paint .

Does this product require any primer for a cement render?

Assuming the bare cement render has cured for at least 30 days, the substrate is clean, sound and prepared as detailed in the technical data sheet it can be applied directly.

hi I have used this in the past on internal cement rendered garage with no problems . We have just bought a new property that has white Efflorescence on the garage walls that is along the line just below ground level. No way of removing the external source so some external damp will come through periodically . Can it be used over the efflorescence deposits ? Thanks Jack

No the efflorescence must be removed prior to application of Watertite.

I have rising damp on my walls and my paint keeps on bubbling. I have fixed the dam issue and was wondering if I can use the zinsser watertite paint directly over the old paint or do I need to fully strip the old paint off the wall first?

Zinsser Watertite works best when applied to bare masonry surfaces, we would recommend removing the old paint prior to application. If the existing paint cannot be removed back down to a bare substrate such as brickwork, blockwork or concrete we would recommend Coo-Var Anti-Damp Paint .

A year ago we bought an old terraced house - built circa 1900. Roof repairs were carried out then, to stop water ingress and we think this has been successful. However, prior to that the wall (1st floor- alcove next to chimney) will have become very wet. Following the roof repairs we re- plastered and painted the area but crystals continue to come through. Should we strip back plaster and put on a new coat of plaster, followed by a treatment/paint (please suggest), or should we strip back and treat the wall before plastering etc. Thank you

Assuming the source of the damp has been fixed, we can recommend Coo-Var Anti-Damp Paint as this is efflorescent resistant and should stop the crystals coming through the paint film.

Hi there. Would this paint be suitable to paint the concrete floor of a shower area in our rugby club please? It needs to be anti slip too

No, we would instead recommend Smartkote Safekote .

Hi Is this product ok to be used on a cellar floor & then covered in vinyl flooring? Kind regards Justyn

No, we would instead recommend our 402 Damp Proof Coating .

If I use Watertite on on an internal wall can I emulsion over it later to match the colour of the other walls in the room.

Zinsser Watertite produces a beautiful, bright white eggshell finish. If desired, it may be topcoated with any quality paint, but will nullify the mould and mildew protection portion of the Zinsser warranty. To maintain the warranty, instead use Zinsser Perma-White Interior which can be tinted to nearly any colour and is available in a Matt or Satin finish. Allow a minimum of 14 days before painting.

I have the same problem as John with bleeding render. Do you have any other recommendations for exterior masonry paint to try hold this problem back? Also, If I use the Zinsser, which primer would be good to use with it please? Many thanks Martin

The response provided to John (copied below for your reference) is our only offering for this issue. " Zinsser Cover Stain has been used in this situation to block the rust stains however there is no guarantee how long it will hold the stains back. As soon as any trace of moisture gets into the metal beading the rusting process will start again and stains are likely to bleed through once more. It would not be possible to say how long the primer would hold the staining back. Applying 2 coats of the Cover Stain will give a little more protection and hold back the staining for longer than 1 coat. The Cover Stain can be overcoated with a standard masonry type coating. Please note that the only 100% effective way to solve the problem would be to remove the affected angle beading and replace with new stainless steel or plastic beading."

I have rust bleeding through the masonry coating on my house. The rust comes from the metal edging used by builders so I cannot simply get rid of the source of the problem. Can you recommend a product that will 'seal the surface' thus preventing further bleed. This product will need to be suitable for painting over in order to match the rest of the masonry. I have tried a number of sealants without success.

Zinsser Cover Stain has been used in this situation to block the rust stains however there is no guarantee how long it will hold the stains back. As soon as any trace of moisture gets into the metal beading the rusting process will start again and stains are likely to bleed through once more. It would not be possible to say how long the primer would hold the staining back. Applying 2 coats of the Cover Stain will give a little more protection and hold back the staining for longer than 1 coat. The Cover Stain can be overcoated with a standard masonry type coating. Please note that the only 100% effective way to solve the problem would be to remove the affected angle beading and replace with new stainless steel or plastic beading.

A below ground level (1m) internal wall in an old converted barn has been previously tanked, but now is damp. Plaster sound and render sounds solid. Will Watertite be a cost effective solution after stripping back plaster compared to very expensive re-tanking? Thanks for your help Graham

Zinsser Watertite is a cheaper option than tanking and should work in this situation. It needs a sound masonry surface to bond to, all the plaster must be removed back to the masonry substrate. Apply the Watertite directly to the render surface, no primers or stabilisers should be applied. Be sure to read the products Technical Data Sheet carefully and advise if you have any other questions.

Hi, Can the zinsser-watertite paint be applied on internal skimmed walls. I have a house that is insulated and water has saurated the insulation and so in the kitchen water penetrates the wall and so paint flakes off. I note from the product description that it can only be applied on brick walls? Thanks https://www.rawlinspaints.com/home/hygiene-coatings/mould-damp-proof-paints/447-zinsser-watertite.html

Zinsser Watertite works best when applied to bare masonry surfaces, for your application you may be better looking at Rust-Oleum Mathys Durbocem or Coo-Var Anti-Damp Paint . The source of your water ingress should be r emedied ASAP.

Is this the best paint to use in our cellar. Bricks are quite wet and in a couple of areas water is coming in through old mortar joints

Zinsser Watertite should be OK for this job, this is the type of situation the product is used for. It can be applied to damp surfaces however these must be clean, sound and any previous paint coatings well adhered. Any gaps in the mortar joints where the water is leaking through will need to be patched up with render. Refer to the Technical Data Sheet and follow all the steps regarding preparation and application.

Can this paint be used over existing emulsion? I want to use it in the cellar, the plastered walls have already been painted. but damp is coming through in places. Provided any loose paint is scraped off, would this paint work?

No, Zinsser Watertite should not be applied over existing coatings. Instead see Coo-Var Anti-Damp Paint .

Can I use this product to paint over the tiles in my shower ??

No, you would need to use instead something like Rust-Oleum Tub & Tile Refinishing Kit .

how many coats does zinzeer watertight require on bare block-work walls please

2 - 3 coats at 2m² per litre, per coat.

Would it be ok in a bathroom to paint Watertight over water resistant plasterboard, and ceiling, then tile over part of the board? Is the paint likely to affect tile adhesion?

This is a fairly common question and the answer is Zinsser Watertite is definitely not recommended for this situation. You should ask the supplier of the plasterboard if any special treatment is required before tiling over, but we would expect you can tile straight over the board.

How many litres in a tin?

This product is available in 5 litre or 10 litre tins.

Can Zinsser Watertite be used indoors for damp proofing?

Zinsser Watertite has a unique solvent based formula that combines a state-of-the-art waterproofing resin with Portland cement to create a coating that stops up to 34psi of water pressure. It can be used internally and externally on walls.

Can we overpaint Zinsser Watertite?

Zinsser Watertite can be mixed to most pastel shades and produces a smooth, eggshell finish. But, if desired, it may be over coated with most good quality paints, but this will nullify the mould and mildew protection portion of the Zinsser warranty. To maintain the warranty, use Zinsser Perma-White Interior or Zinsser Perma-White Exterior which can be mixed to almost any colour required in a variety of sheen levels. Whichever method is chosen, allow a minimum of 14 days before over-painting.

Zinsser Watertite Ultimate Waterproofing Protection Coating

Zinsser Watertite

Reference ZN7110001A1

Brand Zinsser

Search ID ZIN447

40+ off-white and pastel tones.
For interior and exterior concrete, stucco, cement, cinder block, and masonry surfaces.
Keeps water out and prevents mould and mildew for up to 5 years.
Twice the strength of latex waterproofers with a smooth finish.
Low-odour, solvent-based formula suitable for wet or dry surfaces.
Fast drying, recoat in 4 hours.

Please note: Colours are sold in the nearest tin size but actual paint volume per tin may vary up to 10% depending on colour.

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During busy periods, this means that tinted colours could take longer, for example – a ready mixed colour ordered on a 3-5 day delivery might arrive within 3 days, however a tinted colour might take the full 5 days to arrive.

To find Ready Mixed colours, search "ready mixed" or select the Ready Mixed 'colour chart'. To see Tinted colours select a colour chart such as RAL, BS, NCS, etc. or search for a colour/hue to see available or related options.

To ensure fair pricing, we split colours into ‘Price Bands’ to group together similar priced colours. If you wish to search for the cheapest tinted colours, always select Price Band 1.

We make every effort to list all available colours, however we also offer a colour match service which can be accessed by contacting our Technical Team on 0113 245 5450 (option 2) or emailing [email protected]

*Colours are sold in the nearest tin size but actual paint volume per tin may vary up to 10% depending on colour

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32 questions about the product

Description

Zinsser Watertite Waterproofing Paint - ultimate solution for protecting masonry from water damage.

This low-odour, solvent-based acrylic paint is designed for both interior and exterior applications, offering unmatched performance and ease of use.

Key Features:

Available in off-white and pastel tones, this versatile paint can be applied to a variety of masonry surfaces including concrete, stucco, cement, cinder block, and more.
Its advanced formula is perfect for use on both wet and dry surfaces, ensuring a seamless application every time.
With a unique blend of waterproofing resin, portland cement, and other special ingredients, Zinsser Watertite offers twice the strength of standard latex waterproofers.
It prevents mould and mildew growth on the paint film for up to 5 years, ensuring your surfaces remain pristine and protected.
Fast drying with a recoat time of just 4 hours, this paint makes projects quick and efficient.
The paint provides a smooth, non-gritting matt finish that does not yellow over time.

Applications:

Ideal for interior basement walls, sealing concrete slabs before flooring installation, and exterior foundations and retaining walls.
Recommended for above and below grade applications, providing comprehensive protection against water intrusion.

Limitations:

Not recommended for potable water tanks, cisterns, bird baths, swimming pools, or as a primer or finish on floors subject to foot traffic.

Health & Safety

Zinsser Watertite is classified as a hazardous product. It contains Cement, Portland, chemicals which may cause skin irritation, serious eye damage, and respiratory irritation. It is flammable and poses environmental risks. Ensure proper ventilation, use protective gloves and eyewear, and store in a cool, well-ventilated area. The product does not contain Diisocyanates. UN number for transportation is 1263.

Product Details

Reference 447-904955

Data sheet

Manufacturer: Zinsser
For Use By: Consumer Use
Interior / Exterior Use: Interior & Exterior
For Use On: Masonry
Concrete
Stucco
Cement
Application Method: Brush
Roller
Sheen: Eggshell
Single, Two or Three Pack: Single
Pack Size: 5L
10L
Application: Brush, Roller
Coverage: 2m² per litre
Touch Dry: 1 Hour
UN Number: UN1263
Colour(s): Standard Colours
Base Type: Solvent-Based
Suitable For Use On: Masonry
Suitable For Use On: Concrete
Suitable For Use On: Stucco
Suitable For Use On: Cement
Finish: Eggshell
Application Method: Brush
Application Method: Roller
Manufacturer: Zinsser
Components: 1K
Usages: Waterproofing & Dampproofing
Product Usage Type: Topcoat
Fastest Delivery: Next Working Day
Colour Family: Cream
Colour Family: Beige
Colour Family: Grey
Colour Family: Green
Colour Family: Blue
Colour Family: Pink
Colour Family: Yellow
Colour Family: White
Categorised As: Anti-Damp Paints
Product Focus: Mould & Damp Proof Paints
Seasonal: Cold Weather

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Safety Data Sheet

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Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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simon on 2024-08-28 12:51:45	Question: Can plaster/render be applied on top of this paint, followed by conventional wall paint?
	Answer from Rawlins’ Technical Team: No, Zinsser Watertite isn't recommended to be over-coated with plaster or render.

Marty G on 2024-02-05 12:03:33	Question: My front door leads directly into my lounge. The exterior wall at right angles to the door has a damp patch, which appears to be coming from the exterior wall next to the door. This wall is painted, but the paint is peeling. I understand this paint should be used on bare brick, but I can't remove the paint. Will this work or should I use something else?
	Answer from Rawlins’ Technical Team: Zinsser Watertite works best when applied to bare masonry surfaces, we would recommend removing the old paint prior to application. If the existing paint/plaster cannot be removed back down to a bare substrate such as brickwork, blockwork or concrete we would recommend Coo-Var Anti-Damp Paint.

Emma on 2023-11-20 10:58:58	Question: Hi, The first 500mm of our external wall is below street level. We are seeing slow but consistent damp and acknowledge there will need to be regular maintenance as we cant feasibility stop the source of the damp. We are looking to strip the existing plaster to bare brick but only to approx 1m high. I understand this product is a 2 layer system, but would it be possible to add further layers this product for it to meet the depth of the existing (undamp) plaster and sanded back give a smoother almost invisible join?
	Answer from Rawlins’ Technical Team: Unfortunately no, this product should only have a maximum of 2 coats applied to a bare prepared substrate for the system to work. If the product is applied only to a certain height, this will cause the system to fail as moisture getting in behind the coating will spread and form where the ridge will be at 1m high.

Sandra Northey on 2023-09-21 12:55:02	Question: I have had a door replaced with breeze blocks in my garage but rainwater seeps through the area - would this paint be suitable to waterproof the breeze block area please?
	Answer from Rawlins’ Technical Team: While this product can hold back 34psi of pressure when applied to bare compatible substrate, due to the porosity of breeze blocks this may not solve the issue. Please can you provide more information and pictures of the internal and external areas in question to [email protected] so we can assist.

Geoff Mizen on 2023-09-07 21:51:24	Question: On the exterior surface of an exterior brick wall the two coarses of bricks below the damp proof layer are badly affected by efflorescence and are very unsightly. I plan to use efflorescence remover then treat with fungicide . I would then like to paint these two brick coarses. Could you please advise as to which is the best paint for this use
	Answer from Rawlins’ Technical Team: For application to clean, dry, sound brickwork below a damp proof membrane we would recommend to use a bitumen based paint such as Tor Non-Tainting Bitumen Solution

Geoff Mizen on 2023-09-03 20:14:37	Question: On an external wall the two rows of bricks under the damp proof coarse are very unsightly .Covered in efflorescence .I am going to apply efflorescence remover but am wondering if I can then paint Zinsser Watertite on afterwards to make this area look better
	Answer from Rawlins’ Technical Team: Yes assuming the brick wall is bare, clean, dry and sound this can be applied.

Mike on 2023-03-11 22:08:03	Question: Can I paint Zinsser Watertite over existing exterior masonry paint I want to be sure the paint on an exterior wall is the most water tight I can find and the wall is susceptible to algae. Existing paint looks in decent condo and not flaking.
	Answer from Rawlins’ Technical Team: Unfortunately no, this product should only be applied to a bare substrate such as brick or block work.

Jon on 2022-12-29 14:53:15	Question: Hi Rawlins Team, We have a smallish room which smells of damp, although there are no signs of actual wetness. We want a product to paint the concrete floor which can be overlaid with an underlay then carpet. Would Zinsser Watertite do the job?Could it also be used to paint the walls which have been plastered and painted? We'd like to overpaint it afterwards. Many thanks for your help! Jon
	Answer from Rawlins’ Technical Team: Unfortunately no, this product would not be suitable for application to a plastered wall or a concrete floor. Assuming the plastered walls are clean, sound and prepared as detailed in the technical data sheet we can recommend Coo-Var Anti-Damp Paint for this application. For the concrete floor assuming you are looking for a surface applied damp proof membrane, the floor is clean, dry, sound and prepared as detailed in the technical data sheet we can recommend N-Virol Superseal Plus Damp Proofing DPM Paint.

Alison on 2022-10-08 08:55:57	Question: Hi, We have a board burner in the living room and the bricks around it suffer badly with salts. I regularly treat the bricks with salt neutraliser. I've decided to paint the bricks around the burner and I've jumped the gun and bought the zinsser watertite paint but now I'm worried (feel rather sick actually) that it's not going to withstand the temperatures around the wood burner and the paint was very expensive! Please can you help me? The wall has a distance of just over a foot at the sides of the burner and and 5" at the back. I'm praying that you're going to tell me the paint will be ok since it cost me £100! Kind regards, Alison
	Answer from Rawlins’ Technical Team: It has not been tested for this. It’s designed to handle moist and wet surfaces like retaining walls… rather than hot and dry. Therefore, it is impossible to say what will happen here.

Adam on 2022-09-08 07:19:00	Question: Hi I have a damp basement which I have tanked out but this hasnt really worked as the tanking has "blown" away from the wall despite using Sika Bond first. I was thinking of removing the tanking on the wall with the problem and replaing it with this Watertite paint. In the concrete floor I have used a 2 part epoxy paint which has been brilliant. What would you recommedn for the damp wall? Thanks
	Answer from Rawlins’ Technical Team: Watertite can hold back upto 34psi of pressure when applied to a suitable substrate but it is not a tanking system. If you wish to use Watertite the failed tanking system should be removed first, but addressing the issue of the blown system and reapplying a Sika 1 Waterproofing System would be advised.

Zoe on 2022-01-03 16:16:51	Question: Can I use this on plywood pleas? A section of my garage has been insulated & boarded out to be used as a pet grooming studio & the walls will be subjected a degree of water spray from shaking wet dogs & accidental shower spray, will this be suitable?
	Answer from Rawlins’ Technical Team: This product is not suitable for use on plywood, assuming the timber is clean, dry, sound and prepared as detailed in the techncial data sheet we can recommend Teamac Metaclor Antifouling Primer followed by 2 coats of Teamac Chlorvar Chlorinated Rubber Paint. This can be mixed to many RAL and BS colours in a gloss finish, but this is not animal safe.

Jonathan on 2021-12-19 17:50:26	Question: An inner wall in my apartment is always damp bordering on wet, with the paint crumbling and bubbling. I suspect there is a leak from the kitchen pipes in one of the apartments in a higher floor which causes water to run down the shared walls, but even after a thorough investigation, I could not discover where the source is, as some people wouldn't let me in to check. I recently pealed the crumbling paint and rendered the wall, but i can't paint over the render with regular paint because it does not completely dry up. Can I use WaterTite on the render as paint that will stop the dampness?
	Answer from Rawlins’ Technical Team: This product is designed to be applied to a bare substrate such as brick and we would not recommend it is applied to plaster or render. The cause of the leak must be addressed and the substrate allowed to dry prior to application of any paint. At this point assuming the wall is clean ,dry, sound and prepared as detailed in the techncial data sheet we can recommend Coo-Var Anti-Damp Paint. This contains an active reagent that will aid dealing with any remaining surface moisture, but this will only be a temporary solution and will ultimately fail unless the leak is found and repaired. It can also be overpainted for decorative purposes.

Manish on 2021-09-17 19:48:11	Question: Hi, I had a front Porch built 5 years ago. Not sure what the root cause is, but every winter the inner walls collect a lot of condensation, even just touching the walls makes the hands wet. The porch is well ventilated all through the year via a small window that's always kept open but this doesn't resolve the condensation issue. I have fixed subsisdence cracks and repointed problem areas this year. will painting inside walls using Zinsser watertite paint help? I don't think I will be able to get rid of the existing paint fully. Should I use a Damp Seal Paint first/instead of this Product? Any advice would be much appreciated!
	Answer from Rawlins’ Technical Team: Watertite is designed to aid dealing with moisture travelling through the walls when applied to a bare substrate. As you mention condensation you may want to consider Coo-Var Anti-Condensation Paint.

Cameron on 2021-07-20 11:45:34	Question: Does this product require any primer for a cement render?
	Answer from Rawlins’ Technical Team: Assuming the bare cement render has cured for at least 30 days, the substrate is clean, sound and prepared as detailed in the technical data sheet it can be applied directly.

jack on 2021-04-11 18:34:14	Question: hi I have used this in the past on internal cement rendered garage with no problems . We have just bought a new property that has white Efflorescence on the garage walls that is along the line just below ground level. No way of removing the external source so some external damp will come through periodically . Can it be used over the efflorescence deposits ? Thanks Jack
	Answer from Rawlins’ Technical Team: No the efflorescence must be removed prior to application of Watertite.

Michael on 2021-01-27 12:21:59	Question: I have rising damp on my walls and my paint keeps on bubbling. I have fixed the dam issue and was wondering if I can use the zinsser watertite paint directly over the old paint or do I need to fully strip the old paint off the wall first?
	Answer from Rawlins’ Technical Team: Zinsser Watertite works best when applied to bare masonry surfaces, we would recommend removing the old paint prior to application. If the existing paint cannot be removed back down to a bare substrate such as brickwork, blockwork or concrete we would recommend Coo-Var Anti-Damp Paint.

Barbara on 2020-06-21 18:41:25	Question: A year ago we bought an old terraced house - built circa 1900. Roof repairs were carried out then, to stop water ingress and we think this has been successful. However, prior to that the wall (1st floor- alcove next to chimney) will have become very wet. Following the roof repairs we re- plastered and painted the area but crystals continue to come through. Should we strip back plaster and put on a new coat of plaster, followed by a treatment/paint (please suggest), or should we strip back and treat the wall before plastering etc. Thank you
	Answer from Rawlins’ Technical Team: Assuming the source of the damp has been fixed, we can recommend Coo-Var Anti-Damp Paint as this is efflorescent resistant and should stop the crystals coming through the paint film.

Angela on 2019-05-28 17:01:38	Question: Hi there. Would this paint be suitable to paint the concrete floor of a shower area in our rugby club please? It needs to be anti slip too
	Answer from Rawlins’ Technical Team: No, we would instead recommend Smartkote Safekote.

Justyn Phillips on 2019-04-16 08:26:28	Question: Hi Is this product ok to be used on a cellar floor & then covered in vinyl flooring? Kind regards Justyn
	Answer from Rawlins’ Technical Team: No, we would instead recommend our 402 Damp Proof Coating.

Allan on 2019-01-28 20:16:42	Question: If I use Watertite on on an internal wall can I emulsion over it later to match the colour of the other walls in the room.
	Answer from Rawlins’ Technical Team: Zinsser Watertite produces a beautiful, bright white eggshell finish. If desired, it may be topcoated with any quality paint, but will nullify the mould and mildew protection portion of the Zinsser warranty. To maintain the warranty, instead use Zinsser Perma-White Interior which can be tinted to nearly any colour and is available in a Matt or Satin finish. Allow a minimum of 14 days before painting.

Martin on 2018-05-10 15:34:22	Question: I have the same problem as John with bleeding render. Do you have any other recommendations for exterior masonry paint to try hold this problem back? Also, If I use the Zinsser, which primer would be good to use with it please? Many thanks Martin
	Answer from Rawlins’ Technical Team: The response provided to John (copied below for your reference) is our only offering for this issue. "Zinsser Cover Stain has been used in this situation to block the rust stains however there is no guarantee how long it will hold the stains back. As soon as any trace of moisture gets into the metal beading the rusting process will start again and stains are likely to bleed through once more. It would not be possible to say how long the primer would hold the staining back. Applying 2 coats of the Cover Stain will give a little more protection and hold back the staining for longer than 1 coat. The Cover Stain can be overcoated with a standard masonry type coating. Please note that the only 100% effective way to solve the problem would be to remove the affected angle beading and replace with new stainless steel or plastic beading."

John Butler on 2018-03-15 17:46:57	Question: I have rust bleeding through the masonry coating on my house. The rust comes from the metal edging used by builders so I cannot simply get rid of the source of the problem. Can you recommend a product that will 'seal the surface' thus preventing further bleed. This product will need to be suitable for painting over in order to match the rest of the masonry. I have tried a number of sealants without success.
	Answer from Rawlins’ Technical Team: Zinsser Cover Stain has been used in this situation to block the rust stains however there is no guarantee how long it will hold the stains back. As soon as any trace of moisture gets into the metal beading the rusting process will start again and stains are likely to bleed through once more. It would not be possible to say how long the primer would hold the staining back. Applying 2 coats of the Cover Stain will give a little more protection and hold back the staining for longer than 1 coat. The Cover Stain can be overcoated with a standard masonry type coating. Please note that the only 100% effective way to solve the problem would be to remove the affected angle beading and replace with new stainless steel or plastic beading.

Graham Peck on 2017-11-21 19:53:30	Question: A below ground level (1m) internal wall in an old converted barn has been previously tanked, but now is damp. Plaster sound and render sounds solid. Will Watertite be a cost effective solution after stripping back plaster compared to very expensive re-tanking? Thanks for your help Graham
	Answer from Rawlins’ Technical Team: Zinsser Watertite is a cheaper option than tanking and should work in this situation. It needs a sound masonry surface to bond to, all the plaster must be removed back to the masonry substrate. Apply the Watertite directly to the render surface, no primers or stabilisers should be applied. Be sure to read the products Technical Data Sheet carefully and advise if you have any other questions.

Aziz on 2017-10-13 16:40:33	Question: Hi, Can the zinsser-watertite paint be applied on internal skimmed walls. I have a house that is insulated and water has saurated the insulation and so in the kitchen water penetrates the wall and so paint flakes off. I note from the product description that it can only be applied on brick walls? Thanks https://www.rawlinspaints.com/home/hygiene-coatings/mould-damp-proof-paints/447-zinsser-watertite.html
	Answer from Rawlins’ Technical Team: Zinsser Watertite works best when applied to bare masonry surfaces, for your application you may be better looking at Rust-Oleum Mathys Durbocem or Coo-Var Anti-Damp Paint. The source of your water ingress should be remedied ASAP.

Tracey on 2017-09-03 17:19:35	Question: Is this the best paint to use in our cellar. Bricks are quite wet and in a couple of areas water is coming in through old mortar joints
	Answer from Rawlins’ Technical Team: Zinsser Watertite should be OK for this job, this is the type of situation the product is used for. It can be applied to damp surfaces however these must be clean, sound and any previous paint coatings well adhered. Any gaps in the mortar joints where the water is leaking through will need to be patched up with render. Refer to the Technical Data Sheet and follow all the steps regarding preparation and application.

Liz Spencer on 2017-05-15 11:26:13	Question: Can this paint be used over existing emulsion? I want to use it in the cellar, the plastered walls have already been painted. but damp is coming through in places. Provided any loose paint is scraped off, would this paint work?
	Answer from Rawlins’ Technical Team: No, Zinsser Watertite should not be applied over existing coatings. Instead see Coo-Var Anti-Damp Paint.

Ali Reed on 2017-04-23 20:42:38	Question: Can I use this product to paint over the tiles in my shower ??
	Answer from Rawlins’ Technical Team: No, you would need to use instead something like Rust-Oleum Tub & Tile Refinishing Kit.

r collier on 2017-02-15 14:17:00	Question: how many coats does zinzeer watertight require on bare block-work walls please
	Answer from Rawlins’ Technical Team: 2 - 3 coats at 2m² per litre, per coat.

G Overbury on 2016-06-15 08:21:26	Question: Would it be ok in a bathroom to paint Watertight over water resistant plasterboard, and ceiling, then tile over part of the board? Is the paint likely to affect tile adhesion?
	Answer from Rawlins’ Technical Team: This is a fairly common question and the answer is Zinsser Watertite is definitely not recommended for this situation. You should ask the supplier of the plasterboard if any special treatment is required before tiling over, but we would expect you can tile straight over the board.

Ian on 2016-04-02 08:58:20	Question: How many litres in a tin?
	Answer from Rawlins’ Technical Team: This product is available in 5 litre or 10 litre tins.

angela moth on 2015-10-27 10:30:52	Question: Can Zinsser Watertite be used indoors for damp proofing?
	Answer from Rawlins’ Technical Team: Zinsser Watertite has a unique solvent based formula that combines a state-of-the-art waterproofing resin with Portland cement to create a coating that stops up to 34psi of water pressure. It can be used internally and externally on walls.

Orpheus consultants on 2015-05-26 06:42:18	Question: Can we overpaint Zinsser Watertite?
	Answer from Rawlins’ Technical Team: Zinsser Watertite can be mixed to most pastel shades and produces a smooth, eggshell finish. But, if desired, it may be over coated with most good quality paints, but this will nullify the mould and mildew protection portion of the Zinsser warranty. To maintain the warranty, use Zinsser Perma-White Interior or Zinsser Perma-White Exterior which can be mixed to almost any colour required in a variety of sheen levels. Whichever method is chosen, allow a minimum of 14 days before over-painting.

IMPORTANT SHIPPING & DELIVERY INFORMATION

Zinsser Watertite is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

All delivery costs below are excluding VAT

General Painting Application Kit

Provides the basics for any painting project. Whether it is a one off job, or you just want to make sure the right application tools get to site. Provides an economical way of making sure you will have what you need Ideal for interior and exterior paint projects, including uPVC surfaces, walls, ceilings, and more. Click to jump down to...

£12.08 (incl. VAT)

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Zinsser Watertite Waterproofing Paint - ultimate solution for protecting masonry from water damage.

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IMPORTANT SHIPPING & DELIVERY INFORMATION

General Painting Application Kit