Best / Discussions

Where should I put a vapour retarder?

...best at the 2/rds point if possible, but where exactly in Canada are you? What you propose seems to make sense from a physics point of view as it sounds like ...

Posted by Jeffrey Connell March 14, 2020, 4:25 p.m. Wall assemblies - new construction 4 Responses

When using larsen trussees, what is the maximum spacing between TJIs

...best to check with your municipal building inspector to make sure what ever wall design you do will pass. If the stud wall is carrying the load then it may be n...

Posted by steve outlet March 6, 2020, 12:39 a.m. Wall assemblies - renovation 3 Responses

What is the best way to do wall construction using Charred Cedar Siding?

I had a small project building a garage with charred cedar siding and it is for experimenting of using charred cedar. I'm interested to know the wall construct...

Posted by Dobie Cheung June 6, 2020, 10:44 p.m. Exterior cladding 1 Responses

What is the best way to do a cottage reno adding an insulation blanket?

...best. And 2 inches of foam will be between R8 and R10, so the interior surface of foam would be cold and at risk of developing condensation. Here is our buildin...

Posted by Barton Rowe Feb. 28, 2021, 1:27 p.m. Wall assemblies - renovation 2 Responses

is a double vapor barrier on a South Florida roof bad?

I am building a new home in Naples Florida with a metal roof and open cell foam sprayed on underside of roof deck. I am considering a peal and stick membrane...

Posted by Arthur Moore April 6, 2020, 12:57 p.m. Roof assemblies - renovation 0 Responses

Which is the best way of solar heating an indoor public swimming pool to save operating costs?

I am in charge of an indoor public swimming pool. Its size is 50m x 25m and every month approximately 3500 swimmers use it from 07:30 to 22:00 daily. For now o...

Posted by Ιωάννης Σταυρόπουλος March 29, 2020, 12:50 p.m. Solar thermal collectors 1 Responses

How to insulate an apartment you don't own?

...best starting place are these pages here - Top Tips for Getting a House Ready for Winter Best Energy Saving Tips for Green Homes For now, assu...

Posted by Teresa Cunningham Oct. 21, 2019, 3 p.m. Wall assemblies - renovation 1 Responses

How can we clear up green pool water after adding bog plants and lillies?

Our natural pool turned green after adding bog plants It was clear prior to their installation. We have this page on our site about How to Install Natural Swim...

Posted by Mercedes McCloughan June 15, 2020, 1:28 p.m. Natural swimming pools and ponds 1 Responses

What are the foundation options for a prefab house?

...best foundation for a prefab home is often limited in a way by the manufacturer and the floor construction. It would seem from the options you’ve laid out that ...

Posted by Richard Bowie Nov. 20, 2020, 3:40 p.m. Foundations and Basements 2 Responses

What do I in my basement where new insulation meets old?

I’m insulating my basement with 2” of EPS against poured concrete foundation, then framing a 2x4 wall, then adding Rockwool. Unfortunately, due to some areas, ...

Posted by Steve J July 20, 2019, 10:01 p.m. Basements improvements 2 Responses

What is the best way to Insulate a basement and floor joists that are embedded into the concrete?

Hi, I have recently purchased a home in Toronto. We had some water issues and I've opened up the walls where I found some mould to see that the previous owners...

Posted by David Pereira April 28, 2020, 10:34 p.m. Foundation and basement improvements 2 Responses

Basement reno - How do I effectively insulate my basement?

...best way to insulate a basement ' particularly when people are doing basement renovations and energy efficient upgrades . The honest question, is there simply i...

Posted by Steve J Feb. 13, 2019, 10:25 p.m. Foundation and basement improvements 2 Responses

Is EPS or XPS better for use in basement rim joists? Should faced or unfaced foam boards be used?

My home in south-central Pennsylavnia was built in 2001. The unfinished basement (walls and floor) surfaces are formed of poured concrete. One side of the base...

Posted by Thomas Dispenza Sept. 8, 2019, 12:43 a.m. Basements improvements 6 Responses

What is the approximate cost per square foot for an ECOHOME?

I have a student preparing a thesis on green affordable housing - just wondering what a ball park cost may be...Best, Anna Franz, PhD, Asst Prof, UDC We have P...

Posted by anna franz April 13, 2021, 3:43 p.m. Architecture and plan design 1 Responses

Does using T & G wood plank instead of drywall affect where we put the vapor & air barrier?

...best thing to use for air and vapour barriers and where should we put them in the wall assembly so they work best? Hi Sue, Great question, and the short ans...

Posted by Sue Colbourne Nov. 9, 2019, 6:16 p.m. Walls and ceilings - interior surfaces 3 Responses

Do you have on a category on insulating vans?

...best one we've seen used Rockwool insulation and a separate air barrier membrane. The best tiny house we've seen so far All about tiny houses

Posted by chantal fortier April 14, 2019, 2:08 p.m. Tiny house 1 Responses

Can I purchase XPS made with HFOs?

...best alternative still mineral wool? We have reason to believe that sometime in 2020 there will be a switch to HFO blowing agents with a much lower Global Warmi...

Posted by Kate Noblio Dec. 14, 2019, 12:35 p.m. Insulation and soundproofing 3 Responses

Should I get an HRV or an ERV?

...best for cold climates Ottawa is a humid climate, and can even be so in winter, so you may be best with an HRV, but read over that page to be sure. For summer...

Posted by RUPINDER ARORA March 12, 2021, 10:23 a.m. HRV and ERV 1 Responses