Existing / Discussions

What is the best material to use on top of plywood for water proofing?

...existing plywood. Are you still in the design phase or have you started building already? Thanks Mike! I'm still in the design phase. Hasn't started construct...

Posted by Babak K July 27, 2020, 12:22 a.m. Air and vapour barriers 3 Responses

Can my shallow crawl space be converted to a slab foundation?

...existing foundation or fill it in, then pour a slab on grade and rest the house back down on it. We of course can’t give you any specific advice on how to carry...

Posted by Sian O'Keefe Aug. 15, 2020, 12:52 p.m. Slab on Grade 1 Responses

Can I add Larsen Trusses and cellulose to 1920s House in Minneapolis?

...existing sheathing? At that point you could tape the plywood joints. Then you could seal the edges of the poly to the plates and install the Larsen trusses. I...

Posted by Ken Traefald Feb. 17, 2020, 2:30 p.m. Wall assemblies - renovation 3 Responses

What is the best way to insulate a 1780 brick federal with stone foundation in New York?

...existing foundation comes at a much higher cost simply due to the need to excavate, but it does however afford you the opportunity to do a membrane and drainage...

Posted by carole roseman Jan. 5, 2020, 2:39 p.m. Foundation and basement improvements 1 Responses

Can Rockwool be installed over Type II EPS?

...existing exterior wall, it is important not to trap moisture. Rockwool insulation is one of our preferred methods for adding insulation to the outside of a hous...

Posted by Brian Bonnell March 30, 2020, 11:04 a.m. Wall assemblies - renovation 1 Responses

Should I replace my skylights with solar tubes?

...existing ones. Skylights are usually quite a bit bigger than a lightwell , so you will lose some of the light you are probably accustomed to, as well as the vie...

Posted by Elizabeth Brown Nov. 30, 2018, 9:32 p.m. Windows and doors 1 Responses

Would you recommend Legalett over water radiant floor heat for a backyard studio in Toronto?

...existing structure or building a new one? Either way it doesn’t hurt to check with Legalett for a price, and that could help you avoid a few headaches in regard...

Posted by Christine Pountney May 2, 2019, 1:22 p.m. Delivery: radiant, forced-air and decentralized 1 Responses

Where can I find building plans for an eco home?

...existing double car garage (18' wide x 25' deep). I'm interested in replacing it with a pre-fab garage with an apartment on the second floor. Are there any pre-...

Posted by Derek Kittilsen Aug. 4, 2019, 12:09 p.m. Planning and Design 5 Responses

Can I reclaim old triple slider windows?

...existing sealed window thermals into them and replace them in the rough openings? If so, that sounds like a ton of work to do with old triple pane thermals , an...

Posted by Keanan Toews Jan. 20, 2019, 1:01 p.m. Windows and doors 1 Responses

Can you use polyiso insulation on the exterior of a wall behind cedar siding on the west coast?

...existing homes, since moisture moves right through it you are not at risk of trapping humidity inside the wall assembly. Piggybacking on this thread, would y...

Posted by Iain Matheson Jan. 28, 2020, 10:38 p.m. Wall assemblies - renovation 2 Responses

What is the best exterior Wall and Roof Rigid Insulation for a barn renovation?

...existing home for more details. What does your local Building code say the minimum R value for walls, roofs and slabs is in the area?

Posted by Ron Busch June 27, 2020, 3:50 p.m. Wall assemblies - renovation 1 Responses

Can you use an HRV or ERV for radon removal in a dirt floor basement?

...existing air, you will likely find better results with source removal, as in a radon stack below a membrane. If you can I would extend that over the concrete an...

Posted by Douglas Touart March 1, 2021, 5:15 p.m. Radon in Homes - Mitigation 1 Responses

I want to insulate the outside of my house, which type of insulation do you think is best?

...existing wall. After that, install a vapour permeable drainage plane, and vertical strapping to allow moisture to vent and water to drain, which won’t happen ...

Posted by J. Ferguson Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 12 Responses

Can you elevate a slab on grade foundation?

...existing clay. If you are looking to get near Passive House performance with you home then you may want to look into such a kit, below is an image of a Passiv...

Posted by Raoul Lions July 27, 2019, 2:47 p.m. Slab on Grade 4 Responses

How do you replace windows in a double stud wall house?

...existing header. Sometimes a double wall system will have a 2x6 supporting wall with an additional 2x4 interior wall simply for the purpose of adding additional...

Posted by Sasha June 25, 2018, 10:25 p.m. Windows and doors 3 Responses

What is the best way to make a row house in Montreal Quebec more energy efficient?

...existing cast iron radiators which are compatible with water to water geothermal systems, so I would recommend that route, either with new rads, or if you could...

Posted by Elizabeth Brown Feb. 26, 2019, 9:09 p.m. Wall assemblies - renovation 3 Responses

Halo Exterra rigid exterior insulation - has anyone work with it?

...existing. Any sugestions????? Cheers thanks for your time. Also I have read all of you posts on wall insulation very informative. Hi George, Winnepeg is f...

Posted by George Shannon Jan. 21, 2020, 3:39 p.m. Insulation and soundproofing 9 Responses

Which of the passive home prefab kits are available in Quebec?

...existing plans in order to customize homes to meet the needs of individual families. Prefab Passive House & LEED Kit Homes for Sale We have had a lot of req...

Posted by Shawna Dunbar June 16, 2020, 3:51 p.m. Architecture and plan design 1 Responses