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Community and Q&A

Insulating and moisture barrier for poured foundation

IrishGuyJohn | Posted in Energy Efficiency and Durability on

I’m building a house in Zone 4a with a poured concrete foundation, 40’ wide and 44’ deep.  The south wall of the foundation will be 2 x 6 construction and walk out basement.  East, west walls will be partially exposed at the south end and fully embanked on the north end.  It is possible to embank most of the east and west walls. North wall will be fully buried.  Building on a hill so drainage and water table are not an issue.

What moisture protection and wall insulation should I consider?  Interior?  Exterior? 

Thanks

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Replies

  1. Expert Member
    Peter Yost | | #1

    Hi John -

    1. install waterproofing, not dampproofing. The difference between the two is withstanding hydrostatic pressure and crack-bridging, which the former has and the latter does not.

    2. Insulation exterior vs. interior - we had a good Q&A run on this topic a bit ago - take a look at the exchange content here: https://www.greenbuildingadvisor.com/article/the-best-way-to-insulate-a-foundation.

    Peter

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