EPS foam / Discussions

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

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

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 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

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

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

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 wo...

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

Is it OK putting 1 inch of EPS under vinyl siding with no wall insulation good?

...EPS under floors. Walls have no insulation, siding is T-1-11 from the sixties would like to put 1 inch EPS under vinyl siding. the building is pretty well bui...

Posted by Roger Smith Nov. 12, 2019, 6:34 a.m. Wall assemblies - renovation 7 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

How do you best use polyiso insulation in a basement?

Polyiso foam board : fiber faced (white) (IKO Therm 3) or the older product, Organic faced (gray) polyiso. Both products have visible 2mm (+/-) holes in both s...

Posted by Iain Matheson Jan. 24, 2020, 7:45 p.m. Basements improvements 1 Responses

What is the best way to insulate the basement of an old house?

...EPS foam acts pretty much as a type II residential vapor barrier, but I would put the vapor barrier right against the foam and do the poly on top. And as for ...

Posted by Bryan Squirrell Jan. 14, 2020, 7:59 p.m. Basements improvements 1 Responses

How you vent a metal roof?

...EPS (R4) with EPS Silverboard SB-35 foam insulation (R5)? Would this be equally effective? Would it alter your recommendations for how to proceed in a manner th...

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

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

...EPS & XPS 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...

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

What type of insulation should I put on the exterior of my new home?

...EPS foam, there are options but EPS would be the easiest go-to, and more easily accessible, read more here about choosing the best rigid insulation for exterior...

Posted by Alex Kesheshian April 23, 2020, 12:22 a.m. Wall assemblies - new construction 1 Responses