The role of a vapour barrier extenderCeilings under an attic in Canada include a vapour barrier that keeps humid indoor air away from the cold side of the insulation. Cutting a hole for a recessed light breaks that barrier. The VBE-3 restores it around the fixture: the enclosure covers the light from above and its collar seals to the existing vapour barrier, so air cannot travel from the room into the attic. It is a small part that protects the building envelope and supports compliance with specific
National Building Code of Canada requirements.
Made for SLM4 and SLM6 fixturesAs its name says, this extender is intended for the
SLM4 and SLM6 recessed lights, and the manufacturer's spec sheet describes it as a vapour barrier extender for 6-inch fixtures. For example, it pairs with the
SlimLED Plus SLM6-16W-CCT-WH, a slim recessed fixture of the SLM6 series. The membrane body and flat flange leave room around the fixture and its connections. Always confirm compatibility on the light fixture spec sheet before installation.
InstallationWith the power off at the panel, cut the fixture opening and gently push the insulation aside to make room. Bring the supply cable through the opening and into the extender, sealing the cable entry so it stays airtight. Slide the extender above the ceiling through the cut-out, open it fully by hand, then peel the protective paper from the
adhesive mounting collar and press it firmly against the existing vapour barrier all around. The recessed light is then connected and installed through the opening. Work of this kind should be done by a qualified electrician, following local electrical code.
Perfect for retrofitsBecause it can go in after the drywall, the VBE-3 suits projects where the ceiling is already closed: adding slim pot lights to a living room, upgrading a kitchen during a renovation or finishing a top-floor room. No need to open the ceiling from the attic side.
Planning your orderCount one VBE-3 for each SLM4 or SLM6 fixture installed under an attic or an insulated roof, in homes, cottages and small commercial units alike. It is cULus listed, light, easy to handle and quick to put in place, which makes it a sensible addition to every slim pot light job in an insulated ceiling.