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Verified construction product

Sika

Sikalastic-641 Lo-VOC

A cold-applied, single-component, elastomeric aliphatic polyurethane saturating resin for Sikalastic roofing and waterproofing systems.

Published technical facts

Specification record

Application method
Cold-applied
Applications
Sikalastic roofing and waterproofing systems
Chemistry
Single-component aliphatic polyurethane resin
Solid content by volume (ASTM D-2697)
89 %
VOC content (ASTM D-2369-81)
38 g/l

Decision summary

What professionals need first

What is this product?
Cold-applied low-VOC polyurethane saturating resin for liquid-applied roofing and waterproofing systems
Where is it used?
Liquid-applied roofing. Used as a saturating resin within Sikalastic roofing assemblies for new roofs, recover and related waterproofing work.
Who manufactures it?
Sika
Product category
Building Envelope
Open Product Data Sheet Open system documentation Open official product page

Construction use

Construction applications

  • Liquid-applied roofing

    Used as a saturating resin within Sikalastic roofing assemblies for new roofs, recover and related waterproofing work.

    Official source

  • Liquid-applied waterproofing

    Manufacturer documentation presents the resin for Sikalastic waterproofing systems requiring a cold-applied aliphatic polyurethane.

    Official source

Specification support

Technical resources

Official documentation grouped by purpose. Duplicate links are omitted.

Product Data Sheets

System Documentation

Supporting Technical References

System context

Installation & system considerations

Only manufacturer-documented system or installation context is shown.

  • Documented system contextSikalastic roofing / waterproofing systems

    Documented as a saturating resin component within Sikalastic liquid-applied assemblies.

    Official source

Evidence-backed attributes

Sustainability & compliance

Only manufacturer-documented or independently verified attributes appear. Evidence class distinguishes manufacturer declarations from third-party verification, certification, and building-rating contribution documentation. Product LEED or WELL certification is not implied.

Material health & indoor air quality

Connected network

Relevant connections

Direct manufacturer and documented system relationships only. Manufacturer exhibition participation does not imply that this product was exhibited.

  • ManufacturerSika

    Company construction expertise, related products and verified exhibition participation.

  • Same manufacturerSarnafil G 410-60

    Additional published Sika product profile. Not a compatibility claim.

  • Same manufacturerSika ComfortFloor PS-25

    Additional published Sika product profile. Not a compatibility claim.

  • Same manufacturerSika ViscoCrete-5100

    Additional published Sika product profile. Not a compatibility claim.

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