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Community and Q&A

Rainscreen help

Erik Olofsson | Posted in General Questions on

I have a friend who needs some advice on a wall detail. The wall stacks up like so: .5″ gypsum wallboard, 2.25″ EPS, 8″ concrete, 2.25″ EPS, stucco scratch coat.

He hasn’t done the stucco yet and we’re wondering if he needs to add a rainscreen detail. It’s a new build but due to a family tragedy, he needs to finish it as quickly and cheaply as possible.

I’m not sure of the climate zone but it is in the B.C. interior, 5700 HDDs, and not too much rain.

Thanks again.

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  1. GBA Editor
    Martin Holladay | | #1

    I don't think that this type of wall needs a rainscreen.

  2. Expert Member
    Dana Dorsett | | #2

    Neither the concrete nor the EPS is much affected by bulk water getting by the stucco. The critical thing to get right with ICFs is the window bucks & flashing, to direct bulk water penetration at the windows to the exterior so that it can't wet the interior finish wall.

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