Installing Boral Siding Without Furring
We are building an addition in Western Pennsylvania. The plans called for cedar siding but a change order now specifies Boral Bevel siding installed vertically over 1/2 inch plywood +Tyvek House Wrap + 1 inch XPS T/G foam insulation on the outside. All the Boral literature indicates installing vertical siding on horizontal drainable furring like CoraVent. The architect talked to the Boral rep and she stated that it was OK to install directly on the wall without furring because Boral won’t swell or rot. Any suggestions?
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