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    ACCESSORIES - COUPE-VAPEUR - VP1212
    ACCESSORIES - COUPE-VAPEUR - VP1212

    ACCESSORIES - COUPE-VAPEUR - VP1212

    SKU: VP1212

    Brand: LUMIFARO

    Insulated ceilings and recessed lighting don't always get along — and that's exactly the gap this little accessory closes. The LUMIFARO vapor barrier (SKU VP1212), also known as a coupe-vapeur, vapour barrier cover, recessed light air seal or pot light box cover, is the protective hood you install over an electrical box or recessed housing sitting in an insulated ceiling. It keeps the ceiling's air and vapour barrier continuous where the fixture breaks through it, so warm, humid indoor air stays where it belongs instead of migrating into the insulation and attic above. If you've ever searched for vapour-tight lighting accessories or a way to make a ceiling opening code-compliant, this is the part you're looking for.

    This vapor barrier cover is built for one clear purpose: in accordance with the National Building Code, it covers a box installed in an insulated ceiling. That single line from the spec sheet says everything a contractor needs — it's an approved, purpose-made solution rather than a bag of plastic and a roll of tape improvised on site. It installs over the box before the ceiling finish goes up, gives a clean surface to seal the polyethylene membrane against, and keeps the work tidy and inspection-ready. Because it's a simple mechanical accessory, there's no wiring, no driver and no maintenance to think about — you put it in place, seal it, and forget it. Full details are in the Coupe-vapeur spec sheet available in the Documentation tab of this page.

    In Canadian homes and buildings, this matters more than almost anywhere: our winters push a big temperature and humidity difference across the ceiling plane, and every unsealed recessed light opening is a potential condensation and frost problem in the attic. Use it in new construction, renovations and basement finishing, in top-floor ceilings, cathedral ceilings, condos, offices, clinics and small commercial spaces — anywhere an electrical box or luminaire is installed in an insulated ceiling. It suits both residential and commercial projects, so electricians can standardize on one accessory across a whole job site. Order the quantity your ceiling plan calls for and seal every opening right the first time.

    4.97$

    What it is and why it exists
    The VP1212 vapor barrier from LUMIFARO is a protective cover — a coupe-vapeur — designed to be installed over an electrical box or fixture housing located in an insulated ceiling. Its job is to maintain the continuity of the building's air/vapour barrier at the exact point where a luminaire or box interrupts it. Without that continuity, warm indoor air carrying moisture finds the opening, travels into the insulation cavity, and condenses on cold surfaces. Over a winter, that shows up as damp insulation, frost on sheathing, stains around the fixture, or worse. This accessory turns a known weak point into a sealed, deliberate detail.

    Code compliance, stated plainly
    The manufacturer's documentation is direct on the point: in accordance with the National Building Code, the vapor barrier covers a box installed in an insulated ceiling. For contractors and electricians, that's the language inspectors want to see supported by a real, purpose-built product rather than a field improvisation. Specifying a manufactured vapour barrier cover also makes the detail repeatable across a project — every ceiling opening gets the same treatment, by every crew, on every floor, which makes inspection walkthroughs a lot shorter.

    Installation notes
    Plan for it at rough-in, not after the fact. The cover goes over the box or housing before the ceiling membrane and finish are completed, and the polyethylene air/vapour barrier is then sealed to it with the acoustical sealant or sheathing tape your assembly calls for, following your local building code and the fixture manufacturer's clearance requirements for insulation contact. Because this is a passive mechanical accessory with no electrical components — no driver, no wiring, no thermal load of its own — there is nothing to service afterward. Keep the fixture's own ventilation and clearance instructions in mind: the cover protects the ceiling assembly, it does not change the luminaire's own ratings.

    Technical specifications
    Brand: LUMIFARO
    SKU: VP1212
    Type: Vapor barrier (coupe-vapeur) cover for a box installed in an insulated ceiling
    Compliance: In accordance with the National Building Code
    Applications: Residential and commercial projects
    Category: Accessories & Mounts
    Documentation: Coupe-vapeur spec sheet (PDF)

    Where it earns its keep
    Think top-floor bedrooms and hallways under an unheated attic, cathedral and sloped ceilings, garages and heated shops with insulated ceilings, finished basements under insulated assemblies, and insulated ceilings in offices, clinics, restaurants and retail spaces. Renovators upgrading old pot lights to LED often discover the original openings were never sealed — adding a proper recessed lighting vapour barrier during the swap is a low-effort, high-return improvement for comfort and energy use. Bulk-buy for a whole house, a floor plate or a multi-unit build, and consult the technical PDF in the Documentation tab for the manufacturer's full description before you finalize your ceiling detail.

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