Vapour barrier / Guides

Roxul mineral wool batt insulation in LEED Homes
Insulation and soundproofing

Choosing the right insulation: the pros, cons and applications for walls, slabs & basements

...vapour barrier and air barrier. Blowing agents are 1430 times worse than carbon dioxide, exponentially worse than EPS. For ecological reasons rather than perf...

Frost in Attics: What causes Attic Ice? How to Fix it?
Roof assemblies - renovation

Why is there frost in my attic? Is ice in roofs a problem & How do I stop it?

...barrier at all, you really do need one. This requires lifting insulation, laying down a polyethylene vapour barrier over the whole surface (it can go up and dow...

Prefab frost-protected shallow foundation insulated form kit
Slab on Grade

Raft slabs - How to build Insulated Frost Protected shallow foundations (FPSF) on problem soils

...vapour barrier protected between layers of EPS foam © Legalett Read more about Insulated Slab-on-Grade Foundation Form Systems here , from the EcoHome Gre...

Polished concrete floors and counters
Paints, finishes and natural coatings

Finishing concrete floors with silicate densifiers

...vapour barrier below it or if the concrete has not sufficiently dried, 'waterproof' sealers such as most epoxies are, can bubble and peel as moisture rises from...

Radon Mitigation - Installing a radon evacuation stack in a slab floor
Radon in Homes - Mitigation

Mitigating radon gas in homes

...vapour/radon barrier and a simple PVC tube and a T-junction can give radon gas an easy escape route. It is a very simple and low-cost procedure that has great r...

Passively-heated off-grid LEED house in Low, Quebec
Off-grid and Net-Zero Housing

Off-grid living blog: a firsthand account of building and living in a remote area

...vapour barrier, preventing air movement and controlling water movement. The interior finish is done with veneer plywood sheets that make for a very attractive c...

Problem areas of air leakage in a home and blower door test being cond
Air and vapour barriers

Airtight Construction of Homes is Essential: "Your house sucks." "Oh yeah? your house blows!"

...vapour barrier. The greater the differential in temperature between inside and out, the greater the concern. Negative air pressure in houses in winter will dr...

Naugler House: the most energy efficient Passive House design in New Brunswick
Efficient home design

New Brunswick's most energy efficient home is Passive House designed

...barrier: OSB with SIGA air barrier tapes Tyvek® water-resistive barrier in rain screen Passive House Windows : Internorm ThermoPassiv sourced through Northw...

Slab-on-grade construction technical guide
Slab on Grade

Slab-on-grade technical guide

...vapour barrier, we are inviting mold. A slab-on-grade foundation avoids this all together. Why we like slab-on-grade construction Quality of life: Polis...

Building a Passive House that's LEED Certified too - an Owner's Tale
Passive House

An owner/builder's account of building a Passive House

...vapour barrier inside and the air barrier outside is vapour open while offering amazing water resistance (allowing any humidity that might find its way into the...

Crawl Spaces or Slab on Grade Foundations?
Foundations and Basements

Slab on grade or crawlspaces, which is better?

...vapour barrier when installed with multiple layers and offset joints as it will not absorb moisture from the ground. • Building on high ground eliminates any ...