Condensation / Guides

What is Interstitial Condensation? (And how to stop it!)
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, i...

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...

How to insulate basements properly
Insulation and soundproofing

Best practices for basement insulation in new home construction

...condensation . The following basement insulation techniques listed here are designed to offer the most sensible and durable options for interior insulation, exterior insulation, or ideally, a combination of both. These assemblies have been designed to prevent moisture infiltration over the service life of a buildin...

Skylights can be problematic in a high performance home
Windows and doors

Are skylights an asset or a liability?

...condensation forming. So here we get to the point about skylights leaking; just because you see drops of water running down the wall from your skylight doesn't mean it's leaking, that could just be condensation. Skylight leaks might be condensation: Since condensation occurs when warm, humid air meets a cold surf...

Suspended-film insulating glass windows are high-performance windows
Windows and doors

Suspended-film insulating glass windows - A definitive guide for these high-performance windows

...condensation? Condensation on windows in homes is the product of humid air meeting a cold surface. How much condensation you have will depend on the temperature of the glazed surfaces of your windows , the exterior temperature, and the level of humidity in your home. Suspended film windows *could or would* have less ...

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 sti...

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 + Air-Con = Damp Moldy Walls So here's a little known fact that most HVAC installers won't tell a potential new client for central air; Polyethylene vapor barriers in combination with air conditioning in homes can rot walls because of the condensation they may cause. This is why if you have a newer hom...

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!"

...condensation when it arrives at a cool surface on the interior of your wall assembly, like your 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...

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

...Condensation and Air Leakage Control Section of The NRCA Roofing Manual: Architectural Metal Flashing, Condensation and Air Leakage Control, and Reroofing - 2014. The Canadian National Building Code specifies in Article 9.19.1.1 ratios according to roof slopes : For a slope of greater than 1:6, the free surface of ...

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 S...

Natural gas fireplace
Heating with gas and oil

Heating with natural gas

...condensation. This is a very efficient combustion system, somewhere in the area of 90% to 97%. There is also very little loss during the transmission of heat energy. With a conventional boiler: This is a clean burn and it emits very few particles. However, overall efficiency is between 50 and 80%, much lower than a c...