Vapour barrier / Guides

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 below. If you don't know if there is vapour protection under a concrete slab, be sure to use a breathable sealer. It's probably a good idea to go for a breat...

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 Northwin Windows Thermolec 2kw Thermo Air resistance heater unit Zehnder Comfoair 200 HRV Naugler House annual heating cost [2012-2013] kWh used 690.2 $...

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: Polished concrete slab-on-grade floor © Bala Structures In comparison to a basement, building above ground has the advantage of providing more natural light. It ...

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 results in reducing radon levels in homes simply due to the natural stack effect. An electrical junction box should be located near the stack in order to allow f...

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 ceiling to the room below. For the above-grade walls, we ended up using a double stud wall assembly. The structure of the house is built with 2x8 lumber, which...

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 risk of flooding. • A slab on grade with a frost-protection skirt designed for its specific climate will not heave. • EPS foam with parging on it or an exte...

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...

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 draw in cold air , making your house feel drafty and increase your heating costs. The issue isn't about durability but rather comfort and cost due to heat and ene...

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

Maintaining healthy indoor air quality

...vapour barrier under your concrete floor and installing a radon vent will eliminate the problem for very little money. It's a simple matter of a 3 or 4 inch pipe with a T at the bottom underneath your slab, that is vented to the outside. Read more on the health effects of radon gas & how to prevent it in homes & cr...

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 wall cavity to dry to the outside). Picking & installing the right air/water membranes and appropriate tapes and being incredibly meticulous in their applicati...

Crawlspace radon barrier installation for radon mitigation
Radon in Homes - Mitigation

Removing radon gas from basements and crawlspaces

...barrier needs to be installed to seal off the ground from the air in the crawlspace . A DIY radon mitigation solution for a crawlspace is to use a standard 6 mil polyethylene vapour barrier, which works, but contractors may be required by law to use a fire-rated membrane. The membrane itself is not impermeable to radon...