HFO / Guides

4th generation blowing agents for spray foam
Insulation and soundproofing

New HFO blowing agents for spray foam will make it over 1,000 times less harmful to the climate

...HFOs, but we will update this article as soon as we find one. Until HFOs make it in XPS panels, we'd still recommend avoiding them whenever possible. Spray foam manufacturers that are switching to HFO blowing agents by the end of this year: Demilec Spray Foam Closed Cell Insulation Products Available across Canad...

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

...HFO blowing agents . Ecohome’s engineer Denis Boyer performed some moisture simulation models with unventilated roofs, and he confirmed that the risk of interstitial condensation (moisture in the air forming water droplets when coming into contact with a hard, cold surface) can be a problem. According to Denis, "When...

Spray Foam Insulation - Is it Good or Toxic & Dangerous?
Insulation and soundproofing

Is spray foam insulation a good choice for your home? Or a toxic recipe for disaster?

...HFO (hydrofluoroolefin) blowing agents have a GWP of 1, which basically means that insulating 1,430 houses now with spray foam will do the same atmospheric harm as was done by 1 house in the past. You don't need to be a mathemagenius to know that's a pretty impressive improvement. So we do extend a big thanks at least ...

The Top Twelve Green Building Trends for 2020
Planning and Design

Find out what's trending in 2020 for Green Home Construction

...HFO blowing agents (hydrofluoroolefins rather than HFC Hydrofluorocarbons), and we have reason to believe 2020 will see the arrival of XPS rigid insulation boards with lower GHGs as well (Green House Gas emissions). Read more here on our page about choosing the best rigid insulation panels. I know it’s a hard one to ...

How much is Too Much Insulation in my Attic or Walls?
Insulation and soundproofing

How much insulation is too much in attics and walls?

Home Insulation - how much is too much? A House can definitely be under-insulated (millions of homes throughout the United States and Canada have this very problem), but can a home have too much insulation? In short, yes it can. In reality, there is an optimal balance between the up-front cost of insulation and th...