Hi guys im from Canada and I recently finish studying and insulating my basement. I used one and a half inch polyiso board insulation glued to the wall with adhesive and I left a half inch Gap all around the board to spray foam. In front of the wall I frame to buy for walls and insulated with Roxul insulation Batts I went to go do some electrical work today and pulled back a bath and noticed that there was a bunch of condensation and a little bit of mold in between the bat and the polyiso. Did I do something wrong here? The humidity in my basement is 45%.
How do you best use polyiso insulation in a basement?
Posted by Iain Matheson Jan. 24, 2020 Basements improvements 1 response
Why is there condensation above ground on an interior basement wall?
Posted by Barb Daluisio Jan. 12, 2021 Basements improvements 1 response
Can you use Foam boards on basement walls to stop condensation?
Posted by Chad Johnson Dec. 21, 2019 Basements improvements 3 responses
What is the best foam board insulation under drywall?
Posted by Wesley Pracht Jan. 11, 2020 Wall assemblies - renovation 3 responses
Is polyiso board or styrofoam best for insulating when finishing a basement in CO?
Posted by Evan B. Nov. 21, 2019 Basements improvements 1 response
Can basement walls to dry to the inside with foam board?
Posted by Tim Hanrahan Aug. 20, 2020 Basements improvements 6 responses
Should I install a poly moisture barrier before the rigid foam board against a basement wall?
Posted by DONandCATHY Crenna Dec. 14, 2020 Basements improvements 3 responses
Is EPS or XPS better for use in basement rim joists? Should faced or unfaced foam boards be used?
Posted by Thomas Dispenza Sept. 8, 2019 Basements improvements 6 responses
How do you insulate concrete basement walls and avoid mould?
Posted by William Hunter Feb. 22, 2021 Basements improvements 2 responses
Can you install foam boards directly against basement walls?
Posted by Ted Gorab Oct. 3, 2019 Basements improvements 23 responses
Will spray foam on basement walls prevent condensation?
Posted by Michael Scott April 12, 2021 Basements improvements 3 responses
Why are half of my basement walls are not insulated and should I add insulation?
Posted by Jake Morel Dec. 28, 2020 Basements improvements 1 response
Should I put foam boards right against my basement wall or leave an air gap?
Posted by Elijah Hargett Jan. 9, 2021 Foundation and basement improvements 4 responses
What do I in my basement where new insulation meets old?
Posted by Steve J July 20, 2019 Basements improvements 2 responses
What is the best way to install basement insulation with existing framing?
Posted by Nick Trotta Sept. 20, 2021 Foundation and basement improvements 17 responses
How do you remove moisture and condensation from basement walls?
Posted by Aaron Keating July 27, 2019 Basements improvements 3 responses
What kind of foam board should I use to insulate rim joists in Wisconsin?
Posted by Matt Kime Sept. 12, 2021 Basements improvements 1 response
What is the best way to insulate the basement of an old house?
Posted by Bryan Squirrell Jan. 14, 2020 Basements improvements 1 response
Can you Insulate a cinder block basement foundation with Rockwool?
Posted by Victor B June 19, 2019 Basements improvements 6 responses
How should I install XPS insulation in a basement?
Posted by Ken Hunold Dec. 27, 2020 Basements improvements
Should I vent the space between a block wall and vapor barrier?
Posted by Nick Santore Oct. 10, 2020 Basements improvements 1 response
What is the best way to insulate interior basement walls that are sweating?
Posted by Chris B Feb. 15, 2022 Foundation and basement improvements 1 response
Is there anything I can do about a vapor barrier on the wrong side of a basement wall?
Posted by Iain B Feb. 8, 2021 Basements improvements 8 responses