How long do I need to leave between 1st and 2nd coats when applying by brush/roller

This product is for application by brush or trowel, Sika do not mentioned a drying time between coats as the moisture content of the substrate, humidity and temperatures can affect this. But it is recommended to wait till the first coat is dry prior to application of the second coat.

Can we create the floor to wall 45 degree fillets out of this, made up as a thick mortar, prior to applying as a slurry?

Unfortunately, Sikalastic 1K is not suitable to create a 45 angle on a floor wall junction. To achieve this, we would advise applying Sika MonoTop 4012 and then apply Sikalastic 1K to seal all areas as required.

Can Sikalastic 1k be painted over with a good quality masonry paint . Would it require a primer or is it just not suitable .

This can be over painted, if a solvent based paint is to be applied on Sikalastic®-1K, carry out preliminary testing in order to ensure the solvents do not attack and damage the waterproofing layer.

Can you plaster on top of this product?

You can, although we wouldn't advise it. Sikalastic 1k is polymer modified and flexible, plaster is fairly rigid, this may cause cracking in the plaster if movement occurs. We would instead suggest using Sika Damp-proofing Slurry as a rigid alternative and then plastering over this. Please note, any plaster needs to be non gypsum based.

Can you put this product down on a plywood surface, and does the plywood need to be primed and if so what do you recommend.

Yes Sikalastic 1K can be applied to plywood - download the product data sheet from the 'Attachments' tab on the product page for more details.

When applying Sikalastic 1K by brush what type is recommended?

We recommend using a good quality Block Brush.

Sikalastic 1K

Reference 489549

Brand Sika

Search ID SIK1535

Sikalastic 1K is a one component, flexible, fibre-reinforced mortar, based on cement modified with special alkali-resistant polymers. It also contains fine fillers, selected graded aggregates, plus special waterproofing additives to produce a flexible mortar that is ideal for waterproofing surfaces subject to flexural strain.

Features and Benefits

Can be applied on damp substrates
Easy to apply by brush or trowel
Good sag resistance and easy to apply, even on vertical surfaces
Good crack-bridging properties

Colour

Grey

Size

£155.52(incl. VAT)

£129.60(ex. VAT)

Quantity

Please choose your colour

Available for Delivery (See Delivery Options Below)

ColourPicker Explained

In general we sort colours for products into 2 main groups - ‘Ready Mixed’ and ‘Tinted’.
Tinted colours will always be more expensive than Ready Mixed colours as they need to be produced at the time of order using a tinting machine dispensing colourant into a base*.
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

Colour reproduction of the Products on the Site is limited by the technology used to deliver web pages and by the colour representation of Customer’s own monitor and computer set-up. We have made every effort to display as accurately as possible the colours of our Products but we cannot guarantee that the colour shown on Customer’s monitor’s display will accurately reflect the colour of the Product on delivery. We recommend that Customer first purchases the smallest Product available or access an industry standard colour chart in person (and not digitally) to ensure that the colour is acceptable for its purposes.

6 questions about the product

Description

Sikalastic 1K is a one component, flexible, fibre-reinforced mortar, based on cement modified with special alkali-resistant polymers. It also contains fine fillers, selected graded aggregates, plus special waterproofing additives to produce a flexible mortar that is ideal for waterproofing surfaces subject to flexural strain. Sikalastic 1K is suitable for application by brush or trowel.

Recommended Uses

Protection of concrete surfaces according to EN 1504-9, principles 1: protection against penetration (coating); 2: control of moisture (coatings); and 8 increasing resistivity (coating)
Waterproof protection of concrete structures including tanks, basins, pipes, etc.
Waterproofing external wall surfaces to be backfilled in the ground
Internal water proofing of walls and floors, in basements for example
Waterproofing of terraces and balconies over concrete or prepared existing tiles
General water proofing of concrete surfaces
Flexible protection coating for reinforced concrete structures against the effects of de-icing salts, freeze-thaw and carbon dioxide

Further Features

Very good adhesion on many substrates including concrete, cement mortars, stone, ceramics, bricks and timber
Mixing ratio can be adjusted in order to obtain the consistency and workability desired for the intended application

For more details please download the product data sheet from the 'DATASHEETS' tab above.

Product Details

Reference 1535-270321

Data sheet

Manufacturer: Sika
Interior / Exterior Use: Interior & Exterior
For Use On: Concrete
Application Method: Brush
Trowel
Colour: Standard / Ready Mixed
Product Certifications: Coating for surface protection of concrete according to EN 1504-2:2004, EN 14891:2012
Pack Size: 20KG
Coverage: 1.2kg per m² per mm
Touch Dry: 24 Hours
UN Number: N/A
Colour(s): Standard Colours
Base Type: Cement-Based
Suitable For Use On: Concrete
Application Method: Brush
Application Method: Trowel
Manufacturer: Sika
Components: 1K
Product Range: Sikalastic

Attachments

Download

Product Data Sheet

Download

Safety Data Sheet

Download

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.

Questions

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Kevin on 2024-09-11 10:07:58	Question: How long do I need to leave between 1st and 2nd coats when applying by brush/roller
	Answer from Rawlins’ Technical Team: This product is for application by brush or trowel, Sika do not mentioned a drying time between coats as the moisture content of the substrate, humidity and temperatures can affect this. But it is recommended to wait till the first coat is dry prior to application of the second coat.

David Cooke on 2024-01-05 10:46:13	Question: Can we create the floor to wall 45 degree fillets out of this, made up as a thick mortar, prior to applying as a slurry?
	Answer from Rawlins’ Technical Team: Unfortunately, Sikalastic 1K is not suitable to create a 45 angle on a floor wall junction. To achieve this, we would advise applying Sika MonoTop 4012 and then apply Sikalastic 1K to seal all areas as required.

Jason Treviss on 2022-03-17 19:50:56	Question: Can Sikalastic 1k be painted over with a good quality masonry paint . Would it require a primer or is it just not suitable .
	Answer from Rawlins’ Technical Team: This can be over painted, if a solvent based paint is to be applied on Sikalastic®-1K, carry out preliminary testing in order to ensure the solvents do not attack and damage the waterproofing layer.

Joe on 2019-11-25 09:43:56	Question: Can you plaster on top of this product?
	Answer from Rawlins’ Technical Team: You can, although we wouldn't advise it. Sikalastic 1k is polymer modified and flexible, plaster is fairly rigid, this may cause cracking in the plaster if movement occurs. We would instead suggest using Sika Damp-proofing Slurry as a rigid alternative and then plastering over this. Please note, any plaster needs to be non gypsum based.

Jonathan Brown on 2019-10-25 13:54:57	Question: Can you put this product down on a plywood surface, and does the plywood need to be primed and if so what do you recommend.
	Answer from Rawlins’ Technical Team: Yes Sikalastic 1K can be applied to plywood - download the product data sheet from the 'Attachments' tab on the product page for more details.

Colin mackintosh on 2016-03-13 22:40:06	Question: When applying Sikalastic 1K by brush what type is recommended?
	Answer from Rawlins’ Technical Team: We recommend using a good quality Block Brush.

IMPORTANT SHIPPING & DELIVERY INFORMATION

Sikalastic 1K 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

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Sikalastic 1K

Sikalastic 1K

Recommended Uses

Further Features

Data sheet

Questions

Question about the product

IMPORTANT SHIPPING & DELIVERY INFORMATION