On Thursday, April 3, 2014 8:22:45 PM UTC+1, John Rumm wrote:
> On 01/04/2014 15:59,
meow...@care2.com wrote:
> > On Tuesday, April 1, 2014 8:26:11 AM UTC+1, jkn wrote:
> >
> >> Thanks, but it is the diameter of the nails that I am thinking is the issue
> >> wrt hammering them in. Homebase do some thinner short galvanised nails with
> >> a thin head that I am wondering about...
> >
> >
> > cue torn felt. Nails arent the best way to fix felt.
> They are ok if you are using proper "nail prep" felt which is woven
> through with strands in both directions and is deigned to not let the
> nails pull through.
> If nailing ordinary felt, an old builders trick is to use say 1.5" wire
> nails, bang them in until firm, and then hammer them over flat so that
> you use the exposed 3/4" of shaft to grip the felt rather than just the
> head.
You're still left with a lot of penetrations though, waiting to leak. Plus spot fixing thats much weaker than all over fixing with bitumen.