RicodJour wrote in news:db117e65-28cd-4684-99f3-
:


Every asphalt and fiberglass shingle manufacturer that I've run across
- maybe about half a dozen of the most common shingle manufacturers -
requires an underlayment or the warranty is voided. Just the opposite
of what you're saying. These include Tamko, Certainteed, GAF, Elk,
Owens Corning, IKO, Atlas, etc.



So how come each-and-every new home I see being built near my place has the
shingles nailed right over top of the bare plywood?


--
Tegger