Saturday, 1 August 2015

(HELP) How to use two layers of roof sheathing?

I am building a porch roof and my wife wants to use grooved rough sawn siding as the sheathing. Problem is the sheathing is 5/8 thick but only 1/4 in the grooves. which isn't thick enough for 20" rafter span

  • If I double up the sheathing (ie 5/8 grooved board plus a 3/8 board) should I glue the two boards together on top of fastening to the rafters?

  • Should I fasten the layers together in the void between the rafters to increase strength?

Thanks for any advice



Submitted August 02, 2015 at 02:05AM by IntelSpectra http://ift.tt/1fTLrtO
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