felt roof cracks

[someonelse]

I have a couple of longish cracks right on the edge of the felt garage roof. (I suspect damage caused by gardener cutting back over-hanging bushes - another story!).

would I be able to seal the cracks with Acrypol?

 

[datarebal]

the roof is shot.. no doubt there are other drips that are failing. its common

 

[^woody^]

Acrylpol will work, but it might also need some reinforcing with flashband or suchlike

 

[someonelse]

Thanks both.
Rest of the roof is fine. No obvious cracks and no internal drips or damp.
Just that one edge. Certainly not keen to re-felt the entire double garage roof....!

 

[catlad]

You can now buy fibre glass matting to go with acropol for larger cracks\splits.

 

[someonelse]

You can now buy fibre glass matting to go with acropol for larger cracks\splits.

Thanks - do you mean something like one of these?

 

[^woody^]

Rather than buy a big roll of something just for a small piece, have a look at some of those aluminium or SS mesh products often sold for plaster or render patch repairs

 

[catlad]

Yes that's the stuff go for the lighter 450g grade
Wire brush the area clean first ,then spread acropol over the area you need repairing. Cut a patch and lay it over the area you have painted and then dab & paint over until the fibre glass has gone. It generally comes grey as standard but you can get it in black as well. And even white for that matter.

 

[Vinty]

You can't apply GRP directly to a flat roof, the resin dissolves the bitumen in the felt.
https://www.grproofing.com/questions/installation/can-apply-grp-roofing-directly-onto-felt-bitumen
Better to cut off existing drips and and either cold fix or torch on new felt drips.
Torching on is the better job.
If the deck on your garage roof is sound you replace just the edge drips without stripping off the rest of the roof.

 

[^woody^]

Acrylpol is OK on felt.

 

[Vinty]

Most people only see the edge drips on a flat roof, new drips make it look clean and tidy.
Felt onto felt should always last longer because they expand and contract at the same rate in hot or cold weather.

 

[datarebal]

wont last as long as a new felt roof. Maybe the decks buggeered on the edges too.

 

[someonelse]

goes without saying that a brand new roof will (should) last longer than a 10 year old one with some patches!
Could say they same presumably about replacing some slipped tiles on an old piched roof. New ones tend to last longer than old....
But even ignoring the difference in cost there are obvious reasons for fixing things rather than chucking them away and buying new!

 

[datarebal]

Re using old tiles or slates if they have good life left makes sense.
Throwing good money after bad does not.
You are basically putting a sticking plaster on it .
That's fine to buy a bit of time , the final outcome is cast in stone

 

[Vinty]

If you do use acrypol you can get acrypol scrim membrane to use with it.
The scrim stops the acrypol paint from cracking open.