Koster 21
Verified by manufacturer 5 months ago
EPD
Certificate type
Two component, solvent free, liquid applied waterproofing material.
Application
Suitable for use as a waterproofing material for the positive side waterproofing of basements, concrete slabs, in tanks, on flat roofs, underneath tiles, on terraces or balconies, and similar applications.
Also suitable as a protective coating against mineral oils and aliphatic hydrocarbons. Bonds well to a wide variety of substrates including; masonry, concrete, screed, PVC, metal and bitumen.
Description
Two component, solvent free, liquid applied, elastic, crack bridging waterproofing material with excellent adhesion to dry and moist substrates. Being liquid applied it is seamless, which greatly eases application to complicated architectural details.
Due to its UV stability it is suitable for indoor and outdoor use. The white colour reflects sunlight and reduces building surface temperatures. Contains no volatile organic compounds (VOC) and is free from polyurethanes, isocyanates and bitumen.
The fast curing coating is highly flexible, resistance to occasional foot traffic, aging, hydrolysis, UV rays, frost and salt. Can seal against synthetic oils and aliphatic hydrocarbons with high boiling points.
Not resistant against substrates with high aromatic hydrocarbon contents such as benzene, xylene, toluene, etc.
General information
Color | White |
Warranty description | Ten year |
Uniclass | |
CAWS | J30/10 Cold-applied damp-proofing J30/110 Cold-applied tanking J30/130 Cold-applied damp-proofing J31/10 Warm deck roof coating J31/353 Waterproof coating J31/5 Cold deck roof coating |
SKU Code | DMS 244 |
Specification data - Liquid tanking resins
Classification data | |
Colour | White. |
Consistence class | Manufacturer guidanceConsistency: Paste. |
Application temperature | 5–35°C. |
Layer thickness | 0.5–2.0 mm. Guidance for specification option: Thickness per layer. |
VOC content | Manufacturer guidanceContains no volatile organic compounds (VOC) and is free from polyurethanes, isocyanates and bitumen. |
Sustainability data
Contains Red List materials | No |
Recyclability | No |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
Product certifications
BIM objects
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
 IFC | - | 1 |
Product certifications
EPD
Environmental Product Declaration - Koster 21
Literature
Koster - The Green Pages of Construction Chemicals
Delta Detailing Brochure
CPD materials
Waterproofing - The use of concrete combinations Type A, B and C Systems.
Waterproofing Existing Basements
Waterproofing Below Ground Structures
Structural Waterproofing for Podium Decks and Buried Roofs
Flood Resilience
Water and Water Vapour Management in Sub and Super-Structure Applications
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