Humidity / Guides

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

...Humidity (RH) to accommodate mold. With recent 'improvements' to construction in North America, we now use standard code compliant paper-faced drywall which can start to develop mold at about 80% RH. As we insulate and make homes airtight, they don't dry as easily, and common building practices trap moisture inside w...

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!"

...humidity, air quality and energy consumption within ideal parameters. Positive and negative air pressure: Neither positive nor negative air pressure in a home is good, as either puts pressure on the building envelope that promotes air leakage and they will each have different effects and impacts depending on the se...

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

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

...humidity conditions outside are favorable, that's pretty hard to judge; so a better alternative is to choose a good quality discounted HRV or ERV system with an automatic electronic humidity control. Along with removing contaminants from the air, there are health consequences from having either too much or too little...

Top Tips for Getting a House Ready for Winter
Wall assemblies - renovation

Winter preparation for your home - are you ready for the cold?

...humidity and lower-quality windows. Winterizing your home: Condensation and ice on windows is a sure sign that your home needs checking over Solutions: You can buy a hygrometer (to measure indoor humidity) at most hardware stores for around $20 or so; that's your first step. If your humidity is low (20-40 RH) t...

How to insulate basements properly
Insulation and soundproofing

Best practices for basement insulation in new home construction

...humidity levels. Basement dehumidifiers can help keep keep humidity levels manageable. Please see our page on retrofitting existing basements . CLICK IMAGE TO ENLARGE Exterior insulation only: fiber cement board and parging above grade 4 inches EPS foam drainage matt bituminous dam...

LEED Platinum prefabricated home Kit
LEED Homes

LEED® Platinum prefab kit home has superior air quality and performance

...humidity, CO, temperature) to calculate all possible variations between the indoor and outdoor environments. In fact, the indoor temperature varied at most by one degree Celsius during the winter, while humidity remained constant at 48%, highlighting the superb efficiency and performance of the house. In short, all thi...

Insulating crawlspaces as part of home renovation
Crawl spaces

How to insulate crawlspaces properly as part of renovating an older home

...humidity as moisture in the ground evaporates into the air and can condense on cold walls and joists where mold can establish itself. That dank air will inevitably be circulated throughout your home, providing humidity, mold spores and a pretty nasty smell that will be the dominating odour of your home, furnishings, ...

Natural Building Insulation Made of Grass - Eco-friendly, Green
Insulation and soundproofing

Non-toxic natural building insulation made of grass

...humidity levels inside your home or walls change, some of that moisture will be absorbed and released by the materials in your home. And, as it's that time of year when condensation on windows can indicate a problem , having some safe passive humidity storage is never a bad thing in homes. Have you ever noticed that ...

Alternative wall coverings to drywall
Walls and Roofs

The best alternatives to drywall for finishing interior walls

...humidity like bathrooms, kitchens and moldy basements , or under windows suffering from condensation problems - which is sub-optimal. When building in areas that may get wet, be certain to choose the improved drywall boards with humidity protection - usually green - or maybe go straight for a 100% recycled plastic wall...

Kitchen and Bathroom design tips

Design ideas for durable kitchens and bathrooms

...humidity and allows you to cook at lower temperatures. Pressure cookers are the most efficient stovetop vessel and they release virtually no humidity while cooking. Ovens use about 6 times the energy of toaster ovens. Keep that in mind for smaller items. An oven will stay warm for some time so shut it off a bit e...

Pre-fabricated straw bale SIPS panels, an environmental choice
Wall assemblies - new construction

Modern straw bale SIPS construction: high performance, durable, affordable & interesting

...humidity has been going on since the early 2000s in the UK, where Chris helped a company named Modcell develop this system. The climate in Great Britain is notoriously damp and yet they have had great success with their straw bale buildings. This should help alleviate concerns that they are inappropriate for the Cana...