wrote in message
oups.com...

I have an unheated porch area and I would like to cover the roof with
cedar shingle. I am told that for a roof the shingles should be exposed
7" only, and that they should be installed over slats so that air can
flow underneath the shingle.

What's on the roof now is tarpaper over 1x12 wood roof boards.
Can I install the cedar shingle directly over 1x12 boards? I would
remove the tarpaper, nail the shingles directly to the board with
7" exposure, and afterwards cover the shingles with Thompson's wood
sealer.

I have build a shed roof like this 5 years ago and the shingles seem
to be holding out fine, so I'm not sure if it is absolutely necessary
to have the air space under the roof shingle. The shingles are
expensive
and I would not want them to fail after 5 years. Thanks,


Cedar shakes are installed over plywood with tar paper in between all the
time up here in the Pacific Northwest--there's 40 squares of em on our house
that so far as I know were installed in 1962 and they're still holding up
just fine.

Now, these aren't shingles.....mind you they're shakes--and there is a
definite difference...and nobody in his right mind would even consider
installing cedar shingles on a roof, at least not around here.

--

SVL