digdug18
Well-known member
Should I add a vapor barrier when adding insulation in my basement? Unfinished walls, I'll be using roxul insulation.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Basement insulation?
- Thread starter digdug18
- Start date
bww_mnm
Well-known member
I have to imagine it's similar to fiberglass from a mold stand point? By unfinished, you mean cinderblock or poured cement?
Here's a link to what state of Minnesota says:
http://www.state.mn.us/mn/externalDocs/Commerce/Basements_110602012856_Basement.pdf
"A recommended interior insulation system
For dry interior basement walls, extruded poly- styrene insulation with a wall side vapor retarder is a recommended insulation system. This is intended for an extruded foam plastic insulation (extruded polystyrene, or equivalent with a similar water vapor permeability) and is designed to keep the insulation protected from exterior moisture sources. The rigid insulation will serve as its own partial vapor retarder (allowing drying of any absorbed moisture to the inside).
There are several steps for this interior insulation approach. See the Appendix at the end of this guide for important details. For insulating the rim joist, see sidebar “How to Insulate the Rim Joist.”
Here's a link to what state of Minnesota says:
http://www.state.mn.us/mn/externalDocs/Commerce/Basements_110602012856_Basement.pdf
"A recommended interior insulation system
For dry interior basement walls, extruded poly- styrene insulation with a wall side vapor retarder is a recommended insulation system. This is intended for an extruded foam plastic insulation (extruded polystyrene, or equivalent with a similar water vapor permeability) and is designed to keep the insulation protected from exterior moisture sources. The rigid insulation will serve as its own partial vapor retarder (allowing drying of any absorbed moisture to the inside).
There are several steps for this interior insulation approach. See the Appendix at the end of this guide for important details. For insulating the rim joist, see sidebar “How to Insulate the Rim Joist.”
danski0224
Well-known member
You can if you want.
Remember that the vapor barrier goes towards the heated side of the wall/floor.
Remember that the vapor barrier goes towards the heated side of the wall/floor.
dlenkewich
Well-known member
I mean to the ceiling, between the 2x10's, between the basement and first floor I mean.
No, you do not add a vapour barrier for this application.