Rigid insulation / Discussions

I'm looking at installing rigid insulation the exterior of My Double brick 1880s

...insulation but no effective vapour barrier. Any suggestions would be appreciated. Insulating an old brick house from the interior or exterior and adding a vap...

Posted by Gordon CASWELL Dec. 13, 2019, 11:38 a.m. Wall assemblies - renovation 1 Responses

Can you install foam boards directly against basement walls?

...rigid fome to Install two inches of rigid insulation board directly against concrete. A mold expert told me to put the board on top of the framing, not directly...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 4 Responses

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

...rigid board insulations are a vapour barrier, some are not. Some are air barriers, some are not. XPS foam insulation at about 1 inch thick will act as a vapour ...

Posted by Joe F Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 7 Responses

Can you spray foam a house from the outside?

...insulation at the same time. Right now there is 1/2" rigid foam with foil directly under the siding. Someone recommended removing the sheathing and doing spray ...

Posted by Joan Lawrence July 11, 2019, 7:17 p.m. Wall assemblies - renovation 3 Responses

What is the best way to deal with a drop ceiling in a high humidity room?

...rigid foam insulation and then faced fiberglass batts and then plywood subfloor of the outdoor deck. The rigid foam was not sealed (no air barrier) and this p...

Posted by steve Roberts Dec. 24, 2019, 8:01 p.m. Walls and ceilings - interior surfaces 1 Responses

How do you insulated a crawlspace with dirt floor?

...rigid foam panels on the concrete block walls (2 inch) The cottage is 900 square ft. To complicate things, we have just made a 400 square foot addition on concr...

Posted by sal Bellicoso Oct. 30, 2019, 4:56 p.m. Crawl spaces 1 Responses

What is the best insulation Under 2" Cement flat Roof in NYC?

...rigid board insulation for a flat roof, and there are several to choose from. Probably one of the more common types of insulation used for flat roofs is rigid p...

Posted by Rafael Mor March 29, 2019, 5:19 a.m. Roof assemblies - new construction 1 Responses

Do frost lines where studs are on a wall show a failure of spray foam insulation?

...insulation in a wall assembly. The best method of wood frame construction would always include continuous insulation on the exterior of walls, without that yo...

Posted by Gerald Crozier July 22, 2019, 10:24 p.m. Insulation and soundproofing 1 Responses

How do I insulate my half below grade basement?

...insulation, I'm guessing no exterior sealing. But dry dry dry inside. I like the idea of the 2" XPS with 4" studs and roxul insulation to give around r24 (loc...

Posted by tom mckeand Oct. 14, 2019, 11:01 p.m. Basements improvements 1 Responses

Is polyiso board or styrofoam best for insulating when finishing a basement in CO?

...rigid insulation boards I have a few questions that will help us pin down the best way forward for you - How old is the home? Is there an exterior membrane ...

Posted by Evan B. Nov. 21, 2019, 8 p.m. Basements improvements 1 Responses

Do I need to insulate under the footings of a frost protected shallow foundation?

...insulation (where and when it is needed). This is exactly how we would build a slab, so we rely on insulation to protect the building from frost damage rather t...

Posted by Jon Piana April 15, 2019, 8:45 a.m. Slab on Grade 1 Responses

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

...insulation types? (Old Poly vapour sheet and fibreglass insulation vs new Rockwool and EPS) How do address the areas where the EPS is adjacent to the old insu...

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

For home renovation, is it better to install insulation on the inside or outside?

...insulation. Spray foam provides the insulation, vapour barrier as well as an air barrier, so it’s a nice all in one solution, though we would recommend you so...

Posted by Neil Richardson Jan. 29, 2019, 4:09 p.m. Wall assemblies - renovation 1 Responses

In your Edelweiss house you use 2x6 studs. Why not use 2x4 studs and add 2" rigid on the inside?

...rigid and 5 1/2" between the studs. why not use 8" semi rigid, 3 1/2" between the studs and 2 " more semi rigid on the inside beneath the gyprock? Is that possi...

Posted by Tom Wagar Aug. 25, 2019, 3:40 p.m. Wall assemblies - new construction 1 Responses

How you vent a metal roof?

...insulation is on the outside? The reason I ask is because the way I read it is that you are planning to have only 3 inches of EPS (R12) as your roof insulation ...

Posted by Kim jarrett July 12, 2019, 12:15 p.m. Roof coverings 3 Responses

What do you think of insulated T Studs in Canada?

...rigid insulation boards (photo below). They were surprisingly easy to build, we just ripped the insulation panels on a table saw and just pressure fit them in p...

Posted by Lee Watt June 3, 2019, 10:57 a.m. Wall assemblies - new construction 1 Responses

Can you use Foam boards on basement walls to stop condensation?

...insulation was added on one of the walls (all others checked and fine) condensation is building up after I waited a month or so into winter and pulled the insul...

Posted by Chad Johnson Dec. 21, 2019, 7:59 p.m. Basements improvements 3 Responses

How do you remove moisture and condensation from basement walls?

...insulation is wrong and the insulation and the plastic barrier are creating the issue. What should be done to remedy this? Replace insulation with foam insulati...

Posted by Aaron Keating July 27, 2019, 4:51 p.m. Basements improvements 3 Responses