re-felting a shed roof

[bikermike]

(not sure if this should be somewhere else - please move if I've got it worng).

My shed has a pitched roof. One side has had new felt put on it recently, the other side hasn't, and it's starting to need it. There is a piece of felt in the shed, I'm assuming the chap never got round to it.

My plan is (assuming the felt is big enough) to put it over the top of the worn-out felt and a bit over the ridge (so it is above the newer felt on the newer side), so the join is the right way up for water to flow over it.

Do I just nail it in place (using proper galvanised roofing felt tacks?).
Do I need to remove the old felt?
Any other hints and tips?

how far through it do you think i'll get before getting fed up and torching the shed...

[ESBkevin]

In theory you can nail over the current layer if it's essentially complete and fairly even. You are correct to flap over the peak/ridge onto the newer side. It is important to secure all edges to prevent the weather (wind) getting under it. Typically slats down either end of the pitch secure it there and wrap it under the side, again a slat may help to keep it secure against the wind even if water can get between the slat and the outside felt. You can buy a pitch based adhesive for sticking down the new felt but in your case I'd stay cheap and patch what you have for now and expect upwards of 5 years from it. Nect time strip it back to the bare wood and glue/tack a fresh layer if the shed warrents the effort.

[nickdub]

If you have the tools I'd cut some thin strips of wood to length - drill through then put preservative on them off the roof - then screw them down over the felt so they run down the roof from the ridge to the bottom edge at about 18" centers.

I'm a sort of belt and braces person though :-)

[bikermike]

good point re ends (sides). I hadn't thought to wrap it round.

I think I'll stick it over and bodge. The shed is dry up top, but has a soft bottom, so I'll need to either throw it or re-bottom it within that timescale.

[Greenleaves]

On my old plot, I used torch on felt, a lot thicker and no nails or batten needed, downside is you need the gas torch

[self-contained]

I refelted my shed roof a couple of years ago. It was freezing cold at the time and after my fingers nearly dropped off, I only finished the side that the old felting had fully lifted off. It's held up fairly well, but having tattier felt on the other side has definitely provided patches where the wind can get in and cause new tears to develop. If you can bear to do the whole thing, it might be better to just get it done.

[4Shoes]

All advice given is good. Only additional bit is to ensure that you overlap the felt enough so that any rain blown up under the join doesn't leak through.

[Two_Sheds]

After years of felt frustration, I switched to coro/onduline, that’s brilliant

[bikermike]

is this a proprietary product?
have you done both sheds with it?

[4Shoes]

is this a proprietary product?
have you done both sheds with it?

I expect it is the branded product similar to
https://www.diy.com/departments/gree...1777690_BQ.prd

Very popular with chicken keepers because it removes hiding place for red mite.

[Two_Sheds]

is this a proprietary product?

It’s actually called onduline or coroline

Onduline rofing sheets - black - genuine onduline roofing sheets delivered direct to site. Onduline the professional roofing choice

Sold in all diy places

[veggiechicken]

My shed roof is covered with pondliner. Comes with a 25 year guarantee and in big pieces so there's no need for a join.

[slappy]

My shed roof is covered with pondliner. Comes with a 25 year guarantee and in big pieces so there's no need for a join.

I've just had a quick look at prices of pond liner and it's remarkably cheap and probably easier to fit that felt.

https://www.pondkeeper.co.uk/subcat....gaAh39EALw_wcB

[bikermike]

finally did it. I found that there we a piece of felt the right size and unused in the shed, so I went with that and a tin of adhesive. Gave a good 10m of lap over the ridge and held it down with pins (mitigated the risk of it leaking though the holes by putting lots of sticky there.

The biggest problem was the adhesive getting on tools, hands etc. If anyone needs to know, automotive brake cleaner shifts it really well.

I hope that's the last dang thing I need to do to that shed for some time

[Gordon the gardener]

Two years ago I was skint and my shed roof was leaking, the only thing I had was some black poly sheeting so I stapled that on, it’s just this week started to leak and would you believe I was on Gumtree this morning and bagged myself a brand new 10 metre roll of felt for a tenner. Sometimes I think there must be a god.(small g)