Rigid foam / Discussions

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

What type of Insulation can I use on the exterior of my home?

...Foam Insulation & Styrofoam There are rigid insulation boards that will act as the insulation only, insulation and air barrier only, or all in one - insulatio...

Posted by Scott Muller April 18, 2019, 2:19 p.m. Wall assemblies - renovation 6 Responses

How do you fix radon and water infiltration in a dry stone foundation?

...foam, it will still insulate, so the risk of freezing is still there. Here is our page on choosing rigid insulation boards , you can see some options there and ...

Posted by john flannery July 14, 2020, 4:24 p.m. Foundation and basement improvements 5 Responses

What is the most efficient passive home design?

...foam forms a good idea? To find the most efficient Passive House wall, if your intention is to reduce your carbon footprint, starts with choosing materials with...

Posted by Peter Riley Jan. 29, 2020, 9:01 p.m. Passive House 1 Responses

Should I bother testing for radon in a gutted and uninsulated house?

...rigid foam, I think that’s a great idea using reclaimed EPS foam panels. For the radon tube, a 12 x 12 x 12 opening to draw air from works as an 'active' stack ...

Posted by Luba Sharapan March 27, 2021, 12:04 p.m. Radon in Homes - Mitigation 3 Responses

What is the best way to finish basement walls?

...rigid foam insulation against foundation walls followed by a stud wall and Roxul / Rockwool insulation and drywall is a good idea. You may have seen it but this...

Posted by Aram Scaram Jan. 21, 2021, 5:13 p.m. Basements improvements 3 Responses

How do you remove moisture and condensation from basement walls?

...foam or rigid foam and do not change the exterior waterproofing, will that stop the moisture from coming inside? Or is digging down and adding a waterproofing m...

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

How do you Insulate a 3 season cottage?

...rigid board insulation to the interior as well, but that will eat up a bit of space so that’s really up to you. If I’m misunderstanding the existing structure p...

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

Do I need a standard 6 mil poly vapor barrier with dense cellulose exterior wall?

...foam board and poly barrier. The foil faced foam board is not completly tight against the underlying shingles and I assume does allow for some air movement unde...

Posted by jeff Chormann May 1, 2020, 9:18 a.m. Air and vapour barriers 2 Responses

Can you Insulate a cinder block basement foundation with Rockwool?

...rigid foam insulation boards and seal the joints (see below). That would offer you a possible termite resistant layer, then airtightness and vapour protection, ...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 6 Responses

Is there anything I can do about a vapor barrier on the wrong side of a basement wall?

...foam board, I still have multiple iron spikes embedded in the concrete. Do I need those? May I cut them flush? Also before foam board, should I paint some wat...

Posted by Iain B Feb. 8, 2021, 2:21 p.m. Basements improvements 7 Responses

How to insulate an apartment you don't own?

...rigid foam boards (learn which are best here) to the wall with a few tiny nails, holes that small are easily repaired when you move out. That would go a long wa...

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

What is the perfect wall assembly?

...rigid insulation, there are ways that employ more expensive materials, but save a lot of time so it sort of comes out in the wash we figure after having done it...

Posted by Paul Drouin Sept. 17, 2020, 6:29 a.m. Wall assemblies - new construction 1 Responses

How should I install XPS insulation in a basement?

All, I have what I think is an unusual problem and I’d like suggestions for the best way to address it. I have a below-grade “cinder block” basement wall tha...

Posted by Ken Hunold Dec. 27, 2020, 7:22 p.m. Basements improvements 0 Responses

How do you seal up an old fireplace chimney?

...rigid insulation (rockwool or expanded polystyrene) and half inch-thick plywood, which can then be covered to match the rest of the house. Installing wood sto...

Posted by Gord Nov. 2, 2017, 10:06 a.m. Wood stove and biomass heat 3 Responses

What is the best way to do exterior foundation styrofoam finishing?

...rigid EPS foam panels , and to finish it I attached a diamond lath to the foam with roofing nails to hold the parging, and did three coats. Its close to 20 year...

Posted by Castor River Farm Jan. 31, 2021, 12:56 p.m. New foundations and slab-on-grade 1 Responses

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

...foam, you could fill exterior cavities with batt insulation, dense packed cellulose, you could also add rigid foam panels, Rockwool panels etc, there are many m...

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

How you vent a metal roof?

...rigid foam panels, followed by the drainage plane membrane? If using the Silverboard SB-35 foam insulation would be equally effective, would it be better to u...

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