On 6 Dec 2006 06:41:03 -0800, "Staffbull" wrote:

If you want it to last a long tiime buy a Butyl pond liner and use that
as a roofing membrane, it'll go for 30 years or more !! I have two
sheds/utillity room done like this with ply underneath, works a treat
!!

Ack. Felt's not all that great, as UV breaks down the bitumen eventually.

Neighbor tossed a thick layer of sand on his ancient felt roof when he painted
his with bituminous paint. It has extended the life considerably -- the layer of
sand seems to protect the paint. His roof is fairly steep, though, I'd worry
that stuff would stick to the sand layer if it were flattish -- though moss
should protect form UV as well?


Thomas Prufer