Existing / Discussions

Basement reno - How do I effectively insulate my basement?

...existing drywall, 2x2 studs, 6mm poly, r12 fiberglass insulation, and tar paper everywhere except laundry room, mechanical area, and beside stairs. Total baseme...

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

What's the best detector & alarm for a back flow valve that has been installed by the utility?

...existing system, we would probably take a look here for alarm product comparisons and availability. It's a great idea to have one of these alarms fitted if you ...

Posted by Tom Poe March 27, 2020, 6:38 p.m. Basements improvements 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

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

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

How to reduce the rain noise from a metal roof?

...existing and you’re just replacing the roof covering? If you insulate properly against heat loss, that can do your soundproofing for you at the same as long a...

Posted by Igal H Nov. 24, 2020, 4:57 p.m. Insulation and soundproofing 1 Responses

Should you allow air flow through a crawl space with a dirt floor?

...existing plywood if its still in good shape, or to keep animals out entirely you could lattice or diamond lathe metal around perimeter. Let me know if I misunde...

Posted by Amber Murray Aug. 17, 2020, 10 p.m. Crawl spaces 3 Responses

Is it not structurally dangerous to smash a concrete floor for a drain?

...existing concrete floor. Most older basements have very limited head room and owners are often reluctant to lower it even more by adding insulation to the floor...

Posted by t b March 2, 2021, 3:18 p.m. Waterproofing and drainage 2 Responses

How do you Insulate a 3 season cottage?

...existing structure please feel free to correct me and we can come up with other solutions for you. The existing structure is probably 80 years old so it looks l...

Posted by Terry Skindilias April 23, 2019, 9:27 a.m. Wall assemblies - renovation 4 Responses

Can you add external insulation to a brick home?

...existing house we often recommend Rockwool, it’s a recycled mineral wool rigid insulation , read more here – The difference between Polyiso, EPS & XPS Foam In...

Posted by Rachel Kaiser April 2, 2020, 9:11 a.m. Wall assemblies - renovation 1 Responses