Foam / Discussions

Can you spray foam a house from the outside?

...foam with foil directly under the siding. Someone recommended removing the sheathing and doing spray foam from the outside. It seems we could also drill holes a...

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

Can I spray foam insulate from the outside?

...foam properly from the outside you would need to see bare studs, and spray foam in the stud cavities. So that would leave you without sheathing, so you would ne...

Posted by Kurt Klischuk June 6, 2019, 8:56 a.m. Wall assemblies - renovation 3 Responses

Spray Foam for basements, which of the different types are best environmentally?

...foams available some of which mention climate change and environmental concerns - but we're wary of greenwashing, so I would value your opinion as to spray foam...

Posted by Rose Adams Jan. 9, 2020, 9:33 a.m. Insulation and soundproofing 1 Responses

What is the best foam board insulation under drywall?

...foam board insulation attached to the stud and seams taped. Then I would set 1/2" drywall on top of the foam and attached with long screws. Does this sound li...

Posted by Wesley Pracht Jan. 11, 2020, 8:10 p.m. Wall assemblies - renovation 1 Responses

Is spray foam a good way to insulate a house from the exterior?

...foam reccomended or is there something I am missing? Any help is grately appreciated! Simon Spray foam in this case will provide everything you are looking ...

Posted by Simon Levitt Dec. 21, 2020, 2:14 p.m. Wall assemblies - renovation 1 Responses

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

...foam board and still be a problem? Hoping to just be able to apply foam to regulate the concrete temps and prevent inside warmer air from touching the concret...

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

Should I install a poly moisture barrier before the rigid foam board against a basement wall?

...foam board insulation held in place with the special plastic pegs (since the poly will not allow adhesive to affix it to the wall), blue sheathing tape on foam ...

Posted by DONandCATHY Crenna Dec. 14, 2020, 2:21 p.m. Basements improvements 2 Responses

Should I put foam boards right against my basement wall or leave an air gap?

...foam board to the inside of the wall or leave a gap for air? I understand mold will not grow on the board but I am afraid that there are very small cracks in th...

Posted by Elijah Hargett Jan. 9, 2021, 5:31 p.m. Foundation and basement improvements 4 Responses

Can you add exterior rigid foam insulation (e.g. EPS) with replacing windows?

We are contemplating an energy retrofit to several 1960's chalet style cabins in Northern VT. Budget matters and the windows of the cabins are in reasonably de...

Posted by Peter Milliken Nov. 9, 2020, 9:13 a.m. Wall assemblies - renovation 0 Responses

Can basement walls to dry to the inside with foam board?

...foamboard to my basement foundation walls. From all of my reading it says that your basement foundation walls can only dry to the inside. If I put foamboard on ...

Posted by Tim Hanrahan Aug. 20, 2020, 12:34 a.m. Basements improvements 4 Responses

Can you install foam boards directly against basement walls?

...foam on the inside for now does the block need to be painted before I put the foam against the block are waterproof and what with. Hey Rocky, At 2 inches thic...

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

Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?

...foam - with the added benefit of making sure that at least 2" of foam has zero possibility of getting moisture back in once the concrete slab has dried out beca...

Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 3 Responses

Is it a good or bad idea to spray foam directly on the interior of shiplap siding?

...foam directly to the back siding of your cladding doesn’t sound like a good idea to me, but I’d need a few more details. And first check out this page to see ho...

Posted by MITCHELL KOCH Aug. 21, 2020, 3:49 p.m. Exterior cladding 1 Responses

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

...foam rather than a failure. The wood studs will transfer far more heat than the Spray Polyurethane Foam (SPUF) , so what you are seeing could actually be an ind...

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

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

...foam board insulation with circumscribing spray foam in each rim joist (or maybe using purely spray foam to cover each rim joist). However, I can't tell whether...

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

Can Rockwool be installed over Type II EPS?

...Foam Insulation & Styrofoam Sometimes adding XPS or EPS rigid foam to the outside of a house can cause problems since it can trap moisture. That said, it is m...

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

Can you use spray foam Insulation under a slab?

...foam polyurethane. If not, why? When building a slab on grade, EPS rigid foam insulation is the most common choice of insulation, for performance and cost . I w...

Posted by Linda Martin April 6, 2020, 11:54 a.m. Slab on Grade 1 Responses

Heco topix screws - which type should be used for attaching insulation outside a house?

...foam external insulation, should Therm Insulation or Stainless screws be used? Is it necessary to have the double thread design of ThermInsulation screws when i...

Posted by Mike Taylor April 7, 2020, 4:45 p.m. Materials and resources 2 Responses