Kurt KlischukPublished: June 6, 2019, 8:56 a.m.Last updated: Dec. 1, 2019, 1:43 p.m.
I bought an old timer home on Gibsons, BC and the siding needs replacing. I want to use the opportunity to seal up and insulate the wall cavity once exposed. I expect to see insufficient or no insulation. After applying spray foam what is best to apply (tyvek vs. something other) before installing the new board and batton siding?
Are you not expecting to see some sort of sheathing behind the siding? In order to spray foam properly from the outside you would need to see bare studs, and spray foam in the stud cavities. So that would leave you without sheathing, so you would need to re-install sheathing or at least wind bracing if we are understanding you correctly. To re-install siding afterwards you would be wise to create an air space so the exterior of the wall can dry. Here is our how to install siding properly video, and another on how to install a weather barrier. And read here for more information about choosing breathable weather barriers.
Fitting extra insulation to an older home when renovating can be a great idea, but when insulating exterior walls from the outside take care to do it right. Ec…
Weather barriers (or more accurately water-resistive barriers) keep bulk water away from vulnerable building components and allow walls to dry at the same time…
Top Tips for choosing the best siding for your house - comparisons of siding products with cost, durability, ease of installation & attractiveness - because ba…
Understanding building science basics will help you design and build durable and efficient wall systems, in this instance LEED Platinum v4.… LEED Platinum V4 W…
When it comes to choosing a building envelope there are many variables to consider: what climate zone you're building in, performance, durability, health, comf…
Basement mold and mildew can easily be avoided with better designed walls. Common building practices trap moisture in wall assemblies preventing them from dryi…
Can a house be too airtight? No it cannot. The difference between air barriers and vapour barriers is often confused. Also confused, is which one is more impor…
Are you not expecting to see some sort of sheathing behind the siding? In order to spray foam properly from the outside you would need to see bare studs, and spray foam in the stud cavities. So that would leave you without sheathing, so you would need to re-install sheathing or at least wind bracing if we are understanding you correctly. To re-install siding afterwards you would be wise to create an air space so the exterior of the wall can dry. Here is our how to install siding properly video, and another on how to install a weather barrier. And read here for more information about choosing breathable weather barriers.
Most specifically, read our guide page to find the best way of installing exterior insulation to the walls of homes here
Let us know more details about our wall assembly and what is behind the siding if you'd like, and we may be able to be more helpful.