I think I know the answer but would appreciate someone confirming for
me. I put the roofing felt on the shed with roofing felt nails (dont
know correct name) now I want to put a couple of wooden strips on to
prevent the felt blowing off if there are gale force winds. The felt
nails will be too short so if I use ordinary nails will the felt seal
around them, thats what I think will happen.I dont want to start a leak
in the felt.
Galvanised clout nails for holding felt. I used what you might call "thick
bitumen paint" to hold mine, I always expected it to leak if I used nails.
But yes, when using nails I've had wind damage before now, where the wind
has ripped the felt. All I can suggest is that you put in all the nails
(into your battens) and liberally coat the nail points with "thick bitumen
paint/weatherproof no nails" before you attach it.
Personally I use thinner felt first, well nailed down with those felt nails,
and then glue top-felt to this using Aqualseal cold felt adhesive. That way
all the nails are underneath felt, the Aquaseal also adds protection.
Hardest bit is getting good adhesion at the edges where the gutter is. I've
used cheap clothpegs to hold the two sheets together until the glue sets and
that seems to have worked.
A cheaper job is to nail a thinb strip of felt over the apex, then nail full
size felt from the edges towards apex, then glue the final full apex piece
over the top edge nails and the apex. The thin bit over the apex helps
prevent the cracking which I always find starts at the apex on single sheet
But that leaves the gutter edge still nailed and the wind did eventually do
it in and lift all the felt.
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