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.