I live in Calgary, Alberta. My house is a 1940s bungalow with a second storey added in 1988. We are replacing the vinyl siding with Hardie Board, and want to improve the insulation at the same time. Right now there is 1/2" rigid foam with foil directly under the siding. Someone recommended removing the sheathing and doing spray foam from the outside. It seems we could also drill holes and blow spray foam in without removing the sheathing. Now that the blowing agents are more eco-friendly, are either of these a good option?
How will it affect existing insulation in the walls? What are the risks for vapour build up if we have a mix of plaster and lathe in the older parts of the house, with fiberglass and interior vapour barrier in the new parts?
- Walls and Roofs
- Wall assemblies - renovation
- Foam blowing agents
- Retrofit an old house
- Climate-friendly foam blowing agents
- Foam R value per inch
- Fiberglass batts
- R value per inch
- Weather resistant barrier
- Air barrier
- Home wrap
- Vapour barrier
- Weather resistive barrier
- Energy efficiency upgrade
- Spray foam
- How to install siding
- Exterior cladding
- Hardie board
- Vapor barrier
- Spray polyurethane foam
I want to insulate the outside of my house, which type of insulation do you think is best?
Posted by Joe F Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 7 Responses
Spray Foam for basements, which of the different types are best environmentally?
Posted by Rose Adams Jan. 9, 2020, 9:33 a.m. Insulation and soundproofing 1 Responses
What is the best way to insulate embedded joists in a basement Montreal Home?
Posted by Emil Idf Jan. 7, 2020, 8:34 p.m. Foundation and basement improvements 1 Responses
Do frost lines where studs are on a wall show a failure of spray foam insulation?
Posted by Gerald Crozier July 22, 2019, 10:24 p.m. Insulation and soundproofing 1 Responses
What is the best way to insulate a home from the outside?
Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses
How do you fix a moisture problem in a finished basement?
Posted by Margo MACFARLANE Oct. 28, 2019, 10:24 a.m. Foundation and basement improvements 1 Responses
How do you attach exterior siding without affecting the air barrier on a passive house?
Posted by Scott Bowker July 16, 2018, 11:07 p.m. Wall assemblies - new construction 3 Responses
Is the ZIP sheathing system good or bad for water control?
Posted by Trevor Prinz Nov. 26, 2019, 4:03 p.m. Walls and Roofs 4 Responses
Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?
Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 3 Responses
Combo structural sheathing, WRB and thin insulation panel in Ontario?
Posted by Steve Bull Jan. 14, 2020, 6:06 p.m. Walls and Roofs 1 Responses
Can you use a vapour retarder paint on the ceiling instead of using a poly vapour barrier?
Posted by Anwas Qwelten June 8, 2019, 3:56 p.m. Air and vapour barriers 2 Responses
Is it OK putting 1 inch of EPS under vinyl siding with no wall insulation good?
Posted by Roger Smith Nov. 12, 2019, 6:34 a.m. Wall assemblies - renovation 7 Responses
How do you insulated a crawlspace with dirt floor?
Posted by sal Bellicoso Oct. 30, 2019, 4:56 p.m. Crawl spaces 1 Responses
How can I get rid of moisture between the vapor barrier and the insulation in a basement?
Posted by David Mitchell Aug. 14, 2018, 6:32 p.m. Basements improvements 2 Responses
How do you remove moisture and condensation from basement walls?
Posted by Aaron Keating July 27, 2019, 4:51 p.m. Basements improvements 3 Responses
How do you fix high humidity levels in a basement?
Posted by JR Tadinac Aug. 21, 2019, 11:26 a.m. Healthy indoor air quality 3 Responses
What is the best foam board insulation under drywall
Posted by Wesley Pracht Jan. 11, 2020, 8:10 p.m. Wall assemblies - renovation 1 Responses
Can you use Foam boards on basement walls to stop condensation?
Posted by Chad Johnson Dec. 21, 2019, 7:59 p.m. Basements improvements 3 Responses
What type of Insulation can I use on the exterior of my home?
Posted by Scott Muller April 18, 2019, 2:19 p.m. Wall assemblies - renovation 6 Responses
For home renovation, is it better to install insulation on the inside or outside?
Posted by Neil Richardson Jan. 29, 2019, 4:09 p.m. Wall assemblies - renovation 1 Responses