Rigid insulation / Discussions

Which type of exterior insulation to use on a house?

...rigid insulation and then vinyl siding My questions are the following.... Which rigid insulation would be best for this application. My main concern is vapour/moisture issues between the rigid insulation and buffalo board. My original plan was to remove aluminum siding. Apply a "Tyvek" wrap, fasten 1.5" rigid to the st...

Posted by Trevor Marshand May 26, 2020 Insulation and soundproofing 1 response

What kind of insulation do you recommend to put on my exterior sheet rock wall?

...insulation as they aren’t harmed by moisture and it will pass right through it. Walls need to be able to dry, so anytime you are adding to a wall its best to make sure that you only  use products that are vapor permeable. Here is our page on Choosing the best rigid insulation, you may also want to check out this page a...

Posted by Uwe Thomas May 22, 2020 Insulation and soundproofing 1 response

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

...insulation, should Therm Insulation or Stainless screws be used? Is it necessary to have the double thread design of ThermInsulation screws when insulating with EPA? What is your batten material?  If rigid enough to receive a bit of pressure from the screw head without much deformation I would just use a flange head sc...

Posted by Mike Taylor April 7, 2020 Materials and resources 2 responses

Can Rockwool be installed over Type II EPS?

...insulation is one of our preferred methods for adding insulation to the outside of a house because it is very resistant to moisture damage, and moisture moves through it easily. This page better explains the properties of each type of insulation –  The difference between Polyiso, EPS & XPS Foam Insulation & Sty...

Posted by Brian Bonnell March 30, 2020 Wall assemblies - renovation 1 response

How do you install rigid insulation to the outside of a brick house"

...insulation now – you could insulate the outside of the bricks, but rather than applying something that will hold moisture, you’re best to install something like Rockwool mineral wool insulation that will let moisture move right through it, which will allow your walls to dry to the exterior. We can try to help a bit mor...

Posted by Gordon CASWELL Dec. 13, 2019 Wall assemblies - renovation 1 response

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 on the basement wall? And have you ever had any flooding issues, either from bulk water, or just high water tables?   

Posted by Evan B. Nov. 21, 2019 Basements improvements 1 response

Is it OK to put 1 inch of EPS under vinyl siding with no wall insulation?

...insulation do you need for green home construction? I would certainly propose more insulation, and to specifically answer your question about vapor – yes, adding vapor impermeable materials to the outside of a wall assembly can cause problems during the cold season. But, the vapor permeability of EPS could be used to y...

Posted by Roger Smith Nov. 12, 2019 Wall assemblies - renovation 7 responses

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

...insulation at about 1 inch thick will act as a vapour barrier, EPS foam insulation will start to act as one at about 2 inches, and polyisocyanurate (the one with the foil on both sides) is a vapour barrier at any thickness (foil is waterproof). You can read all about rigid insulation panels here. Installing insulation ...

Posted by J. Ferguson Nov. 15, 2017 Wall assemblies - renovation 13 responses