Vapor retarder paint / Guides

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

Replacing polyethylene vapour barriers with latex paint vapor control

...paint or vapor semi-permeable interior finishes. The following main principles are recommended: Avoid vapor barriers where vapor retarders will work, avoid vapor retarders where vapor permeable materials will work. Avoid the installation of a vapor barrier on both sides of the wall assembly. Avoid using poly,...

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

...vapor barrier use and placement for walls in the future, or the adoption of paint-on vapor retarder primers - Resulting in better built housing more suited to our climate and lifestyle. To learn more about building science basics, watch the How to Frame a LEED Platinum Wall Assembly Video Guide on t he EcoHome YouTube ...

How to Vent Roofs - the Methods, Vent Types, Fans
Walls and Roofs

Why Roofs need to be ventilated and how to ventilate a roof properly

...vapor barrier or vapor retarder in cold climates and temperate climates, and the right amount of insulation for your climate zone . Exterior siding and roofs should be viewed as a rainscreen just keeping precipitation away from the control layers of the wall – your thermal, air and vapor barriers. Warm air rises, so ...

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

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

...paint will act as a vapour retarder slowing any outward moisture migration while also allowing walls to dry inwards. You may hear that EPS is somewhat moisture permeable; this is true, but only slightly so and not enough to be a problem. According to Professor Straube, two inches of EPS has a perm rating in the range...

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...

How to insulate basements properly
Insulation and soundproofing

Best practices for basement insulation in new home construction

...paint as vapour retarder. CLICK IMAGE TO ENLARGE Interior insulation only: mineral wool board or EPS foam as thermal break against concrete wall 2x4 stud wall with mineral wool batts in cavities drywall with latex paint as vapour retarder. Note: Not having proper exterior moist...