Exterior insulation / Discussions

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

...insulation boards, but be sure to get the right ones, so be sure to read this page first -  The difference between Polyiso, EPS & XPS Foam Insulation & Styrofoam There are rigid insulation boards that will act as the insulation only, insulation and air barrier only, or all in one - insulation, air barrier and v...

Posted by Scott Muller April 18, 2019 Wall assemblies - renovation 5 responses

What is the best way to make a row house in Montreal Quebec more energy efficient?

...insulation and radiant tubing. Sounds like you already have sufficient height in the basement, but I doubt there is any insulation if it was a 70s-80s pour so I would either check it to be sure (by drilling a hole to look in an out of the way place), and if there is none you would be wise to add some. I would propose 4...

Posted by Elizabeth Brown Feb. 26, 2019 Wall assemblies - renovation 3 responses

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

...insulation (from the inside) between the studs on the outside walls? We will be putting up drywall to finish the room. Thanks   Bricks as an exterior finish is 3 times the cost and 3 times the value of any other cladding, so I wouldn’t get rid of it on a whim. If you really can’t stand the look of it or its crumbling, ...

Posted by Neil Richardson Jan. 29, 2019 Wall assemblies - renovation 1 response

How do you insulate an exterior wall from the outside?

...insulation. Specifically there is a ThermalWall EPS foam panel from Legalett that is perfect for such renovations, it attaches easily with short screws and breaks the thermal bridge to reduce heat loss.  The one thing to remember is to keep at least 2/3rds of your insulation on the exterior of the vapor barrier. so in ...

Posted by Stuart Seldon Feb. 11, 2021 Wall assemblies - renovation 1 response

What is the best wall for a house by the sea in New Brunswick?

...insulation (the best products, the order of application/installation, etc.) to get the most efficient and durable air/water/vapor barrier. We would like to get expert advice, since this is a crucial part of the house and we need to get it right, especially since the weather conditions are extreme here.   Nathalie and J...

Posted by Nathalie Lacaille Jan. 6, 2021 Wall assemblies - new construction

What is the best way to insulate exterior walls of a mid-70's Pioneer Log home?

...insulation is an air barrier applied to the exterior then insulation then an exterior like painted wood or something engineered.  Should we use a foam insulation or could that lead to vapour issues?  Thanks!!

Posted by Keith McDevitt Nov. 15, 2020 Wall assemblies - renovation

Should you insulate an A-frame cottage with cathedral ceiling from the exterior or interior?

...insulation to install.  And to be sure I understand, it sounds like your preferred finish is to leave the rafters and bays between them open as the interior finish, which would mean insulating the outside. If that is the case, yes you can, you would want to insulate it the way you would exterior walls, and then install...

Posted by J Genereaux Oct. 26, 2020 Roof assemblies - renovation 1 response

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

...exterior walls of a home to improve energy efficiency, you have to make sure walls can dry. Applying spray 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 how we install siding –  How to install exterior siding...

Posted by MITCHELL KOCH Aug. 21, 2020 Exterior cladding 1 response

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

...insulation to the outside of our stucco siding (concrete like material, about 3/4" thick). I was thinking about attaching large insulating panels (styrofoam or similar) similar to the ones they use all over Europe. I am looking for a pointer on where to start and find more information. Thanks,  Insulating the exterior ...

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

Where should I put a vapour retarder?

...exterior insulation to an old timberframe building.  The interior walls will be wood paneling attached on the outside of the beams.  For the next layer, I am thinking to wrap with vapour barrier.  Six to eight inches of rigid rockwool insulation would go up next, then strapping for the exterior sheath, board and batten...

Posted by Jeffrey Connell March 14, 2020 Wall assemblies - new construction 4 responses

What ext. wall assembly is recommend for a timber frame house (heavy timber)?

...insulation, I would suggest maybe Rockwool (mineral wool) insulation as it is spun from stone dust and is fire proof. Here is our page on Choosing Insulation which will give you many options, and here you can check out Rockwool Insulation and this page here is about Choosing Exteior Siding and Cladding.

Posted by Heath Jarrett March 10, 2020 Wall assemblies - new construction 1 response

Can I add Larsen Trusses and cellulose to 1920s House in Minneapolis?

...insulation, moisture would migrate thought the wall in winter, be unable to leave due to the poly, and it would rot.  Here is a page on exterior house insulation that will explain, including how Larsen trusses and cellulose were used on a Passive House. How to insulate the exterior walls of old homes and not trap moist...

Posted by Ken Traefald Feb. 17, 2020 Wall assemblies - renovation 3 responses

Is there thermal bridging in the Edelweiss REMOTE wall?

...insulation envelope would you completely eliminate any thermal bridging and have a perfectly balanced R value over the entire envelope with no weak points. But that would be a sad house to live in : (  And difficult to enter with no door :) Short of that, it’s a case of doing whatever you can to limit heat loss.   

Posted by David Pantalone Feb. 9, 2020 Wall assemblies - new construction 1 response

Improving the efficiency of a home built in 1978 during renovations, do I need an HRV?

...exterior in older homes Here are our top 10 energy-saving home improvement tips with the greatest return. If you are insulating a home from the exterior and installing an air barrier, you may get to the point where you need a heat recovery ventilation (HRV) or a energy recovery ventilation unit . If so, a nice ductle...

Posted by joe cruikshank Feb. 8, 2020 HRV and ERV 1 response

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

...exterior of the house also providing a vapour barrier. A previous owner had taking down the lath and plaster and installed two by twos with a bit of fiberglass insulation but no effective vapour barrier. Any suggestions would be appreciated. Insulating an old brick house from the interior or exterior and adding a vapou...

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

What is the best way to insulate a home from the outside?

...insulation, then it had loose fill cellulose insulation added decades ago between the studs, but as per usual the cellulose has settled and there are big gaps at the top. As part of an extensive home renovation we have decided to strip the walls inside and out, keep the structure but add insulation to the inside but al...

Posted by Sylvie Gagnon Dec. 12, 2017 Wall assemblies - renovation 1 response