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Tremco Willseal Backer Roll pre-compressed foam secondary seal and backer
Tremco

Tremco Willseal Backer Roll — Secondary Seal and Backer

Sale price$0.00
Authorized Distributor
Stocked in North Vancouver, BC
Pickup & Delivery Across BC
Trade & Professional Grade

Need volume pricing, system advice or a trade account?

Call 250-233-3000 Contact / Trade Account

Technical Documentation

Technical Data Sheet
TDS (PDF)

Always confirm values against the current TDS & SDS before specifying or ordering.

📐 Project-Quoted Product — North Vancouver, BC. Expansion joint systems are sized to your joint width, depth and run length and priced per project. Send us your joint schedule and we confirm pricing and lead time within one business day. Call 250-233-3000 or request a project quote.

Tremco Willseal Backer Roll — Secondary Seal and Backer

Pre-compressed foam secondary seal and backer foundation behind wet-applied sealants | Brand: Tremco (Willseal) | Model: Willseal Backer Roll

Willseal Backer Roll is a pre-compressed, flame-retardant-impregnated polyurethane foam with a pressure-sensitive adhesive on one side, used as a flexible secondary seal and backer rod foundation behind wet-applied sealants in gaps from 1/8 in. It is vapour-permeable, supplied in black, and installation depth can be adjusted to raise the R-value of the joint. Browse the full Tremco range at Canopus Supply.

Professional note: Compatible with silicone, polyurethane, polysulfide and acrylic sealants. Supplied in rolls for joint sizes from 1/8 in. to 2 in. and in sticks for joint sizes from 2.25 in. to 8 in.

Performance Highlights

Elongation
120% ±20%		 Compression Set
4.2% max		 Fire Performance
ASTM E84 Class A
Water Penetration
Pass — ASTM E331 / E547		 Service Temperature
−40 °F to 248 °F (short term)		 Colour
Black

Typical Applications

  • Secondary joints behind wet-applied sealants
  • Precast, masonry and brick facades
  • EIFS joints
  • Window and flashing applications
  • Interior vapour, dust and acoustic control

Limitations

  • Not for joints where standing or ponding water occurs; confirm against the current TDS.
  • Not for below-grade applications; confirm against the current TDS.
  • Avoid contact with hydrocarbon solvents; confirm against the current TDS.

Health & Safety

A GHS-aligned Safety Data Sheet is available for Willseal Backer Roll. Refer to the manufacturer's Safety Data Sheet for complete information.

Purchasing Note: All sales are intended for professional and trade purchasers. Expansion joint products are ordered to project-specific sizes — confirm joint width, depth, movement class, quantity and delivery requirements when requesting your quote. Product use and installation are the responsibility of the purchaser and installer.
Sizing an expansion joint? Contact Canopus Supply — 250-233-3000

Tremco — Professional Sealants & Waterproofing Systems

Technical information is provided for professional reference only. Product selection, joint sizing, substrate preparation, application and final performance remain the responsibility of the purchaser, installer and project specifier. Always confirm against the current TDS, SDS, project specification and site conditions before use.

Available at Canopus Supply — North Vancouver, BC. Authorized distributor in British Columbia.