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Community and Q&A

Thermal Bridging Solutions

draftman2010 | Posted in Energy Efficiency and Durability on

I will do my best to describe this. I’m looking for a suitable solution to address thermal bridging between a foundation wall/ concrete slab floor, and an exterior walk anchored into the foundation. This walk slopes up at doorways to allow for a smooth, uninterrupted entry. There is exterior insulation on the foundation, but the insulation is removed at locations where the walk meets the foundation. Does anyone have any suggestions as to how to create a suitable thermal barrier?

Thanks in advance!

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  1. user-2310254 | | #1

    If you are still in the design stage, maybe something like this would work.

  2. GBA Editor
    Martin Holladay | | #2

    The best solution, in my opinion, is to detail the walk and ramps so that they are independent of the foundation. That will allow the foundation insulation to be uninterrupted.

    With proper preparation of the substrate, you should be able to detail the walks so they aren't subject to settlement or frost heaving. Even if there is a 1/2-inch lip at a door threshold due to settlement, such a minor lip is usually acceptable.

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