What's the record?

[Keith R. Braun]

One layer of slate, one layer of selvage edge, one layer of T Lock, and two layers of 3 tab asphalt.

[Barry Adair]

a few perhaps

[Scott Gilligan, CMI]

Originally Posted by badair

a few perhaps

Go figure...we know how them Texans think everything bigger is better. LOL

[Chuck Evans]

I think I have the record. I can't count the layers.

It's the Japanese house and garden in Philly's Fairmount park http://www.shofuso.com. The roof covering is made of layers of thin bark installed by Japanese craftsmen at a cost over $1.5M. It's probably about 1.5 to 2 ft thick at the swell just back from the rake edge near the peak. The roof, actually the entire house and garden, is a work of art. Its the only combined Japanese house and garden of its type in the US

[dcook1]

I did a house the buyer was purchasing from his friend. Together they were installing a fifth layer of asphalt shingles. I tried to talk them into stripping the old off, asking them if they considered the weight factor, but they were determined to go ahead. They were almost half done when I left.

The ONLY time you should ever consider a fifth, is when it is Jim Beam!