Duchesne - Frequently Asked Questions

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Questions about Products:
Polyethylene film - multipurpose and vapour barrier

How to make a distinction between polyethylene vapour barrier and the multipurpose film?

In addition to the information on the packaging, the vapour barrier itself is printed with the CAN/CGSB51.34-M86 standard number, our accreditation number relative to this standard, and our Ultra + brand name.

What are the main points to keep in mind when installing the polyethylene vapour barrier?

Since the purpose of installing a vapour barrier is to create a sealed envelope inside the building, it is necessary to apply an acoustic seal on all overlaps as well as at the top and bottom of the wall. In addition, the joints must overlap by at least 6", and it is recommended that the film be stapled into the acoustic seal.

What is the difference between multipurpose polyethylene film and the ULTRA + vapour barrier?

Multipurpose polyethylene film is used for various jobs such as protecting surfaces and furniture while sanding and painting, building temporary shelters, doing garden work, etc. The ULTRA + polyethylene vapour barrier, manufactured in compliance with CAN/CGSB51.34-M86 standard, is used in walls to create a continuous, impermeable barrier to protect building insulation. Many manufacturing specifications are imposed to assure users a uniform, high-performing product. For example, a UV stabilizer and an antioxydant (preservative agent) are added to ULTRA + Vapour barrier to keep sun light and heat from degrading the film. This treatment also increases product resistance to cracks. These types of additives give the ULTRA + Vapour barrier a much longer life-span than the multipurpose polyethylene film.