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I thought my felt was fine and it was only loose ridge tiles and repointing. But looking at the old bitumen felt that came off, I'm surprised more water hadn't gotten through. The new stuff is more flexible, watertight and lasts longer. Bitumen felt roofs really only have a lifespan of 10 years (or at least that's what I keep reading, some obviously will get lucky and last longer). Get it re-done, along with a dry-ridge (as opposed to wet ridge - the former uses a fixing system and the latter uses mortar) and you will A) not have to worry about leaks for the next 15-20 years and B) add value/appeal to your property if you want to sell in the next 10 or so years.
stevo_com
Belagerent
My neighbour says he's getting his roof felt replaced with tyvek but keeping the original tiles and wants to know if I want to go in with him too. He reckons the felt is past it's lifespan because it's over 40 years old, but from the inside of my attic it looks...fine.
Anyone done anything like this? Better to sort it before I get some mad problem?