What fasteners to use with Cedar Shingles over 1" IKO Enerfoil?

My wall composition will be: 2x6 studs, 1/2" plywood, 1" IKO Enerfoil (R7), perhaps a breathing mesh? and Cedar Shakes/Shingles. I'm wondering what you folks recommend for a fastener (length/type)?

Thanks!

Asked by Evan Macdonald
Posted Tue, 03/05/2013 - 09:50

Tags: General questions

1.

Evan,
Cedar shingles cannot be installed directly over rigid foam, so you'll need to include a layer of Home Slicker (a plastic drainage mat) between the back of the shingles and the rigid foam.

Here is the standard recommendation for shingle fasteners: "Fasteners should be long enough to penetrate into the sheathing at least 3/4 inch or all the way through." With the 1-inch rigid foam and the 1/4-inch Home Slicker, you'll need to select fasteners that are at least 1 1/4 inch longer than usual. Make sure that your fasteners have a slender diameter, so you don't split the shingles. Needless to say, you want galvanized or stainless-steel fasteners.

More info here: Sidewall Fastener Guidelines.

Answered by Martin Holladay, GBA Advisor
Posted Tue, 03/05/2013 - 11:21

Edited Tue, 03/05/2013 - 11:23.

2.

Thanks for the reply I'll check out the additional info

Answered by Evan Macdonald
Posted Tue, 03/05/2013 - 12:31