Vapour Barrier for 1–3 Gang & Octagon Electrical Boxes (Airtight Seal)

Vapour Barrier – 1 to 3 Gang & 4" Octagon Electrical Boxes

This vapour barrier is designed to create an airtight seal around electrical boxes, helping prevent air leakage and moisture penetration. Ideal for installations in exterior walls and ceilings, it improves energy efficiency and helps meet building code requirements.

Key Features

  • Compatible with 1-Gang, 2-Gang, 3-Gang and 4" Octagon Boxes
  • Creates an airtight seal to reduce air leakage
  • Helps prevent cold air drafts and condensation
  • Improves energy efficiency in insulated spaces
  • Flexible material for easy installation
  • Designed for use in exterior walls and ceilings

Applications

  • Exterior wall electrical box installations
  • Ceiling junction boxes (especially under attic)
  • Condo and residential construction
  • Energy-efficient and airtight building projects

Why Use a Vapour Barrier?

Electrical boxes installed in insulated walls or ceilings can create gaps where air and moisture can pass through. This vapour barrier helps seal those openings, reducing heat loss and preventing moisture buildup that can lead to mold or insulation damage.

Specifications

Product Type Vapour Barrier
Compatibility 1–3 Gang & 4" Octagon Boxes
Material Flexible Plastic
Application Wall & Ceiling Electrical Boxes