Membranes and underlayments

For a waterproof roofing, use this good quality RoofGard-Cool Grey protector.

Deliver reliable roof protection with this 40 mil (1 mm) self-adhesive, self-sealing underlayment made of elastomeric bitumen with a trilaminated woven polyethylene surface. The nonslip, flexible sheet installs under any type of roof covering and operates from -40 to 200°F (-40 to 93°C) for year-round performance. Each 36" W x 65' L roll covers 195 sq.ft., enabling continuous, even coverage across roof areas. Easy to handle and secure in place, it supports professional standards and straightforward DIY work for durable, weather-ready installations and repairs.

The Lastofix underlayment membrane is mechanically fastened to provide optimal protection for roofs against water infiltration. Its anti-slip surface ensures safe movement on the roof, even in difficult conditions. Designed to resist heat, water, frost, and dirt, it is perfect for use in various environments. This product meets and exceeds industry standards, offering increased durability and reliability.

Get this solid and secure roofing sublayer for better protection and installation of your roof.

Self-adhesive waterproofing membrane composed of SBS elastomeric bitumen reinforced with fiberglass mat provides reliable ice and water protection for roof applications. The 1.35 mm thick construction resists temperature variations while maintaining self-sealing properties around fasteners. Silicone film backing separates in two parts for easier installation positioning, ensuring complete coverage on roof edges, valleys, and other vulnerable areas prone to ice dam infiltration.

This self-adhesive waterproofing membrane protects roof eaves, valleys, and penetration points against ice dams and wind-driven rain. Made from elastomeric SBS bitumen with glass mat reinforcement, it maintains flexibility across wide seasonal temperature swings common in Canadian climates. The sanded anti-slip surface provides safe footing during installation on pitched roofs, while the two-part silicone release film allows precise positioning. Self-sealing around nails and screws, it forms a continuous watertight barrier at the most vulnerable areas of any roofing system.

The Multipurpose Waterproofing Membrane is a 1 mm self-adhesive membrane composed of SBS modified bitumen. This membrane is perfect to waterproof various repair and maintenance works around the house, cottage, or farm.

Provide a strengthening underlayment with this basic waterproofing membrane.

Provide a strengthening underlayment with this basic waterproofing membrane.

Provide a strengthening underlayment with this basic waterproofing membrane.

Provide a strengthening underlayment with this basic waterproofing membrane.

Insulate the contour of your doors and windows with this powerful self-adhesive air and vapour barrier, effective at any weather.

Insulate the contour of your doors and windows with this powerful self-adhesive air and vapour barrier, effective at any weather.

Insulate the contour of your doors and windows with this powerful self-adhesive air and vapour barrier, effective at any weather.

Insulate the contour of your doors and windows with this powerful self-adhesive air and vapour barrier, effective at any weather.

Insulate the contour of your doors and windows with this powerful self-adhesive air and vapour barrier, effective at any weather.

This saturated felt is used as an underlayment before the installation of shingles on slanted roofs.

This smooth and uniform felt paper is used in multilayer roofs.

The Multipurpose Waterproofing Membrane is a 1 mm self-adhesive membrane composed of SBS modified bitumen. This membrane is perfect to waterproof various repair and maintenance works around the house, cottage, or farm.

Give your roof an excellent seal with this all purpose membrane.

Give your roof an excellent seal with this all purpose membrane.

Give your roof an excellent seal with this all purpose membrane.

Get the best finish you're dreaming of by applying this effective membrane specially designed for it.

Get the best finish you're dreaming of by applying this effective membrane specially designed for it.

Get the best finish you're dreaming of by applying this effective membrane specially designed for it.

Get the best finish you're dreaming of by applying this effective membrane specially designed for it.

Gripgard is a waterproof membrane designed to protect your roof.

Get this heavy felt paper used in multilayered roofing systems.

This supple and uniform non saturated felt sheathing can be used as a hardwood underlayment or as a floor protector.

Get this Deckgard synthetic roofing made of woven polypropylene to complete your house renovations.

The Multipurpose Waterproofing Membrane is a 1 mm self-adhesive membrane composed of SBS modified bitumen. This membrane is perfect to waterproof various repair and maintenance works around the house, cottage, or farm.

The Multipurpose Waterproofing Membrane is a 1 mm self-adhesive membrane composed of SBS modified bitumen. This membrane is perfect to waterproof various repair and maintenance works around the house, cottage, or farm.

RedZone Corner Guard is designed to flash and protect one of the most critical areas, the joints between the sill and jamb.