EPS foam / Discussions

How thick should EPS foam insulation on basement walls be?

...EPS rigid foam insulation is made of tiny foam beads squished together, so there is a continuous path between the beads where moisture can move, but the rate mo...

Posted by Derrick R March 17, 2021, 9:13 p.m. Insulation and soundproofing 3 Responses

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

...EPS & XPS Foam Insulation & Styrofoam We always choose (and recommend) EPS over XPS due to the fact that XPS has much higher greenhouse gas emissions than EPS...

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

Can Rockwool be installed over Type II EPS?

...EPS & XPS 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 sai...

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

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

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

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

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

...EPS) How do address the areas where the EPS is adjacent to the old insulation? If I demo the laundry room and continue with eps, how do I address insulation...

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

What is the best way to insulate a 2x8 wall?

...foam boards I think eps might be the best to use, but not sure if the foil face would be good, may not be breathable...might be better to just do eps board and ...

Posted by Michael Sweglar July 8, 2020, 10:43 a.m. Wall assemblies - new construction 3 Responses

Basement reno - How do I effectively insulate my basement?

...foam EPS (1.5" or 2"?) +wood stud with Rockwool R14 +Drywall +moisture/vapour barrier laytex paint. Which EPS thickness should I go with? Concrete Slab: DMX a...

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

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

...EPS foam insulation so the slab will retain some passive solar heat from the south facing windows in winter, avoiding having to put too much heat in to keep stu...

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

What is the best method of building a slab on grade?

...EPS foam under footings and a skirt of R8 insulation extending out 4 feet. ARe these suitable for such conditions. Have these materials been tested to see if th...

Posted by Jay Law April 19, 2021, 3:09 p.m. Slab on Grade 1 Responses

Should I insulate a crawl space from the outside?

...eps foam on the walls and the floor was open. The humidity in the crawlspace was in the 60s. I have since put 6 mil poly down on the floor which has brought the...

Posted by Ryan Argente March 7, 2021, 5:07 p.m. Crawl spaces 0 Responses

What is the best way to insulate a Metal structure from the Inside?

...foam? Would that work over the studs & could the dry wall be screwed through the spray foam or would that mess up the thermal break? Or EPS foam sheets on the i...

Posted by Jacky Surber May 2, 2021, 4:09 a.m. Insulation and soundproofing 2 Responses

Can I reclaim old triple slider windows?

...EPS foam, and achive better results than buying all new windows for a fraction of the cost? We have a ton of trees around the house so there is virtually no s...

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

Should I put insulation on the exterior of a brick house?

...foam the interior and then clad the exterior with hardie board. I'm considering adding 1" of rigid EPS or GPS insulation under the cladding. I'm trying to dec...

Posted by Andrew T Oct. 3, 2021, 7:03 a.m. Wall assemblies - renovation 1 Responses

What's the difference between EPS and GPS insulation?

...foam but you can use it anywhere you would use EPS rigid foam insulation. EPS is typically rated at abou R4 per inch where GPS is typically rated as having R5 i...

Posted by Ronald Tetrault Feb. 3, 2021, 5:22 p.m. Insulation and soundproofing 1 Responses

What is the best way to insulate rim joists with EPS and batts?

...EPS pieces againt rim joists/cripple wall cavities and build it out to EPS mounted against foundation wall. 2) Single EPS pieces flush against rim joist, hori...

Posted by Steve J July 18, 2019, 3:53 p.m. Basements improvements 1 Responses

Protection from Insects for Legalett Geo-passive super insulated slab on grade?

...EPS. Is that a danger? Among the many possible ways to protect against that doesn't involve insecticides that might leach into the soil is a copper foil sheath ...

Posted by James Burns April 30, 2020, 11:11 a.m. Slab on Grade 0 Responses

What do you think of Legalett Wall Insulation?

...EPS insulation may be the best option in the long-term, read more here – Is EPS foam is an eco-friendly insulation? Regardless of it’s raw materials, EPS is...

Posted by Igal H Aug. 19, 2020, 3:52 p.m. Walls and Roofs 1 Responses