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On Sun, 17 Jul 2005 17:35:50 +0100, "Steve"
wrote:


nothing over them? what will protect them from water?

The rest of the frame is conventional timber section which is
"tanalised" -
pressure treated with preservative. I was planning to coat these
rafters
with preservative spring & fall like I do with the garden shed,
furniture
etc.

definitely do not laminate them from narrow strips of plywood, then.

Not even marine ply?



nope. marine ply has glue that will be up to the task, but the
transverse plies still present end grain to the weather, from top and
bottom. water will soak these plies. expansion and contraction will
tear the beam apart after a short while.

I'd better try and find some board then!

Thanks

Steve