Condensation / Green Building & Sustainable Home Renovation Information & Advice

Walls and Roofs

Why Your Walls Get Wet: A 'Building Science Made Easy' Guide to Understanding the Dew Point

...condensation behind. Where wall condensation usually shows up The image below is a sample of what I think is a somewhat confusing looking diagram for what it is trying to explain. At first glance, it makes it look like moisture is just going to freeze randomly in mid-air inside your wall, which is not the case. But w...

Concept and design

The two thirds rule of insulation within wall assemblies

...condensation Condensation occurs when warm, moist air cools down to its dew point temperature. When this happens within a wall assembly, liquid water forms inside the structure, leading to severe issues: Mold and mildew growth. Rotting of wood framing and sheathing. Loss of insulation R-value when batt insulation gets...

Flooded basements; how to start fixing a basement flood
Basements improvements

Basement full of water? How to start fixing the damage from a basement flood

Flooded basement? That really sucks... Basement flooding can be a homeowner’s worst nightmare, and I should know. My basement first flooded while I was away getting married, so our honeymoon was spent mopping up the mess left by that flood. I get it - it’s a horrible sight and feeling to step down those stairs and sudd...

Basement foundation with exterior dimple membrane for water protection
Basements

Should you buy a home with a finished basement?

Basements, downstairs in more ways than one For those wishing to become homeowners, one of the decisions you'll face when buying a new property is whether or not to choose a home with a finished basement. This decision can have significant implications for your lifestyle, your finances, and your quality of life. We wil...

¿Qué es la condensación intersticial? (¡Y cómo detenerla!)
Walls and Roofs

What is interstitial condensation in walls or roofs? (And how to stop it!)

...condensation in walls and roofs. We’ve all heard of condensation, but has anyone ever heard of interstitial condensation? If you haven’t (or even if you have) have a read of the below. What is interstitial condensation? Interstitial condensation is a form of damp that occurs most often in winter when warm, moist, inter...

Condensation on windows in our homes - why is it there? - how to stop it?
Walls and Roofs

Condensation on windows is a pain but is it a problem & how to stop it?

...Condensation can cause damage to homes and lead to costly renovations and repairs So, the question is – what should we do about condensation? How do we fix and prevent condensation in our homes? Condensation in homes – the basics So what is condensation? Condensation in its purest form is caused when humidity in the ...

Top tips for getting a house ready for winter
Wall assemblies - renovation

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

...condensation which can be hard to stop, and in some cases it will turn to ice. This is particularly noticeable during periods of extreme cold, made worse by high indoor humidity and lower-quality windows. Winterizing your home: Condensation and ice on windows is a sure sign that your home needs checking over Solution...

The difference between air barriers and vapour barriers
Air and vapour barriers

The Difference Between Air Barriers and Vapor Barriers

...condensation.  In order to prevent condensation from forming, a vapor barrier should be placed on the warm side of your insulation to stop warm, moist air from condensing on a cold surface inside your wall. In cold climates like Canada, for most of the year the vapor barrier should be on the inside of the insulation. I...

Condensation on windows leads to mold & mildew in homes, ERV & HRV systems help
Ventilation

Ventilation & air exchangers

...condensation on windows was common place and hard to stop. This led to a build up of mould and mildew in homes. Modern day airtight homes need mechanical assistance to stop moisture damage and protect indoor air quality, especially true in basements where ventilation is essential to stop mold forming. There are still t...