Vapour barrier paint / Guides

Vapor retarder latex primer instead of polyethylene sheet
Air and vapour barriers

Replacing polyethylene vapour barriers with latex paint vapor control

...vapour barrier is mistaken for, and almost entirely relied upon to act as the air barrier. The purpose of the two barriers should not be confused - the job of the vapour barrier is to control vapour diffusion, the job of the air barrier is to control air leakage. 6 mil poly can work effectively as an air barrier if i...

Better Basement Design on basement walls prevents mold and midlew
Healthy indoor air quality

Basement renovations: How to prevent mold when finishing basements

...vapour barrier. Notice the difference between the studs against the foundation and the studs that formed an interior division wall; the vapour barrier did not protect the exterior wall from damage and mold growth. It caused the damage by prevented the wall from drying to the interior and instead sealed the moisture in....

Exterior damp proofing and drainage mat to protect basements from wate
Insulation and soundproofing

Best practices for basement insulation in new home construction

...vapour barrier primer © Benjamin Moore Interior gypsum board: Latex paint ( or vapour retarder primer ) is recomended as an interior vapour control layer below grade. It is most important to not include a polyethylene vapour barrier or other vapour impermeable materials that prevent walls from drying. 6 mil...

Finished basements can lead to mold and mildew
Healthy indoor air quality

Why are basements moldy? How to fix or Prevent a Moldy Basement

...vapour barrier (60ng and under). At that level of moisture permeability, an almost immeasurably small amount of moisture will be able to migrate into the wall, but with no interior vapour barrier it will pass through harmlessly. EPS, XPS and mineral wool are unharmed by moisture, and perhaps most importantly, EPS and...

Off grid, passively heated and cooled house in the Gatineau Hills, Que
Off-grid and Net-Zero Housing

Off grid living blog, part 2: passively heated, this house in Quebec aims for LEED certification

...paint; 2x4 stud wall at 24 centres as wiring chase, with mineral wool batts R 14; polyethylene air/vapour barrier; 2x8 stud wall at 24" centres with mineral wool batts R 28; 1"1/4 exterior mineral wool board R5; plywood sheathing; house wrap; strapping; cement board siding. The ceiling is a mix of R...

Non-toxic building materials can improve home air quality
Healthy indoor air quality

Maintaining healthy indoor air quality

...paint. There are many safer alternatives on the market now than the toxic paints we used to apply to our walls. For more information see our pages on safer paints , or you could even make your own DIY safe no VOC natural paint with our guide here . Formaldehyde Formaldehyde is one of the more commonly found contami...

Correctly installed Triple pane south facing windows on Ecohome's Demo House
Windows and doors

Installing doors & windows for the best performance in high efficiency homes, LEED & Passive House

...Vapour Barriers in High Performance Homes - EcoHome Guide Discover the Aerobarrier Home & Attic Air Sealing Spray - EcoHome Guide Replacing Polyethylene Vapor Barriers with Paint - EcoHome Guide

Painting with zero VOC paint from Benjamin Moore
Paints, finishes and natural coatings

Choosing safe paints

...paints, replacing them with solvent-free or water-based paints. The move towards safe paint has led to a noticeable improvement in indoor air quality since the mid-seventies, and better even in the last decade. But paints based on petrochemical solvents still represent over half the paints on the market. Using natura...

Installing Siding Correctly
Exterior cladding

How to install siding

...vapour barriers, for example) are now more commonly keeping them wet. We have grown to rely heavily on caulking - often referred to as 'liquid carpenter' - as a a cure-all for every mistake, and to allow for quicker installation by cutting less precisely. Caulking or scribe in a tube is an excuse for poor siding in...

Poly vapour barriers in air conditioned houses can cause mold and rot
Healthy indoor air quality

Why you should Never Install Air-Con in a Home with a Vapor Barrier

...Barrier + Air-Con = Damp Moldy Walls So here's a little known fact that most HVAC installers won't tell a potential new client for central air; Polyethylene vapor barriers in combination with air conditioning in homes can rot walls because of the condensation they may cause. This is why if you have a newer home with ...