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“Protective covering” for exterior foam?

SBArch9 | Posted in Green Building Techniques on

The attached detail suggests a protective covering that covers the exterior insulation at a basement foundation wall. What is a commonly used “protective covering” for this detail? Given the proximity to the ground and code requirements for clearance to exterior cladding, I’m stumped as to what to use here?


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  1. pjmeg | | #1

    I implemented this detail, except in a retrofit situation, and I had painted aluminum trim coil custom bent for the application. Another idea I have heard was to use tile backer board.

  2. MJDesigns | | #2

    This topic was covered in a previous article ... see the following link:

  3. GBA Editor
    Martin Holladay | | #3

    The answer to your question can be found here: How to Insulate a Basement Wall.

    The above-grade portions of all types of exterior insulation must be protected from physical abuse and sunlight. Among the products than can be used for this purpose are the following:
    A cementitious coating or cementitious stucco (for example, Styro Industries Brush On ST), with or without metal lath
    A cementitious coating that includes chopped fiberglass (for example, Quikrete #1219 foam coating or surface-bonding cement)
    An acrylic coating like Styro Industries FlexCoat or Styro Industries Tuff II
    EIFS (synthetic stucco)
    Cement backerboard, with or without a layer of stucco
    Pressure-treated plywood
    Metal flashing
    A fiberglass panel like Ground Breaker from Nudo Products
    Styro Industries FP Ultra Lite panels (XPS coated with mineral granules adhered to one side)
    Protecto Wrap Protecto Bond (a flexible peel-and-stick membrane with a textured, gritty coating)
    ProGuard Cement Faced Insulated Sheathing.

    For more information on this topic, see How to Finish Exterior Foundation Insulation.

  4. SBArch9 | | #4

    Thanks guys, I think the simplest solution might be the pre-finished aluminum. I should have (but didn't) clarify, that this is for a new 'spec' home at the lower end of the market for a developer/builder who is looking to clutch the purse-strings as tightly as possible.


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