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Sikalastic 1K
Sikalastic 1K

Sikalastic 1K

489549
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
Size
£149.54(incl. VAT)
£124.62(ex. VAT)
Quantity
Please choose your colour
Available for Delivery (See Delivery Options Below)

questions 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
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


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

Question about the product

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questions 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.

questions 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.

questions 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.

questions 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.

questions 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.

questions 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