Product Data Sheet Safety Data Sheet Show all documents

Sikalastic®-641 Lo-VOC

Sikalastic®-641 Lo-VOC roofing systems combine cold-applied, aliphatic, one-component, moisture-triggered polyurethane resins with glass fibre mat or polyester fleece reinforcement to create a seamless membrane and flashing system.
System components are:

  • Sika® or Sikalastic® Primer - Select primer per substrate material in accordance with Priming Guide.
  • Sikalastic®-641 Lo-VOC - Resin used for all systems with polyester fleece reinforcement.
  • Sika® Reemat™ Premium - Chopped strand glass fibre mat.
  • Sika® Fleece 120, 140, 170 - Non-woven, needle-punched polyester fleece in various weights.

  • Proven technology with over 25 year track record.
  • One-component - no mixing and ready to use.
  • Fully reinforced with highly conformable Sika® Reemat™ or Sika® Fleece.
  • Moisture-triggered chemistry that is rapidly weatherproof after application.
  • Low odor formulation.
  • Highly elastic and crack bridging.
  • Seamless and fully adhered.
  • Vapor permeable.
  • UV-resistant and non-yellowing.
  • Abrasion and chemical-resistant.
  • Adheres to most common construction materials when suitable primer is used.
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Sikalastic® RoofPro 10, 15, 20 and 25 year systems, including Sikalastic® RoofPro Built Up, Direct, Plaza Deck/PMA, and Vegetated systems for both new construction and refurbishment.
  • Ideal for roofs displaying complex details and geometry or when accessibility is limited.
  • Effective and cost efficient life cycle extension of existing roofs
  • Highly reflective Sikalastic®-641 Lo-VOC in White (RAL 9016) suitable for cool roofs and solar roof assemblies.
  • Waterproofing under tile in a mortar bed.
  • Applications involving cementitious and asphalt pavement overlays.
  • Suitable for use for applications such as balconies, terraces, walkways, plazas, and similar applications exposed to foot traffic when provided with a supplemental aggregated or flake surfacing.

Advantages

  • Proven technology with over 25 year track record.
  • One-component - no mixing and ready to use.
  • Fully reinforced with highly conformable Sika® Reemat™ or Sika® Fleece.
  • Moisture-triggered chemistry that is rapidly weatherproof after application.
  • Low odor formulation.
  • Highly elastic and crack bridging.
  • Seamless and fully adhered.
  • Vapor permeable.
  • UV-resistant and non-yellowing.
  • Abrasion and chemical-resistant.
  • Adheres to most common construction materials when suitable primer is used.

Packaging

18,9 L (5 gal US) pail

Colour

White, Pearl Gray, Steel Gray, Mushroom, Copper Green; custom colors available with minimum order

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