In my last house had a 2 foot width flat roof across front of house in poor
state when I moved in in 1990 (20years old). Took off all the stones, washed
off moss etc so I could reuse. Removed old felt, the wood underneath was OK
but there were many signs of slight water leakage. Got more felt from B&Q,
went for thickest and supposedly longest lasting + galvanised nails.

Inserted one edge under lead flashing on house side, held in place with felt
adhesive (Aquaseal or Febflex, long time ago can't remember). Might have
done two layers glued together. Other side folded round and nailed glued to
woodwork. Also glued a thin trip of along 90% of front edge of roof (under
the felt) to produce a slight lip to contain the stones and allow the water
to run off where it would not cause trouble, roof had slight slope to one
end. When felted I glued some stones to edge to stop rest of stones being
washed off, put stones + 1 bag more from B&Q back, job done.

Was still fine when I sold in 2000.

"Vincenzo" wrote in message
om...
hi, can you help me? i need to replace my flat roof on the bay. it is
felt.
can you suggest materials to use? someone suggested torch on felt? any
good sites to recommend for products or how to repalce?
regards Vincenzo