Water blowing up under roof tiles

[ShadownINja]

Any ways to stop this? Quite windy so rain is coming in.

[R60EST]

If the leak is coming from the first row , possibly the second row of tiles then it's more than likely your felt underneath that is perished and letting water in

[saleen836]

R60EST said:

If the leak is coming from the first row , possibly the second row of tiles then it's more than likely your felt underneath that is perished and letting water in

Normal felt isn't actually waterproof it is only there to prevent snow getting through, I would check to make sure the tiles are all seated correctly/not broken etc.

Edited by saleen836 on Tuesday 19th May 20:23

[mybrainhurts]

My neighbour had this recently. Roofer lifted the tiles and relaid them.

£arm and a £eg time....

[ShadownINja]

There's no felt. Just tiles on wooden beams. Only seems to be running down one beam but looks like something that's happened before as the previous owner stuffed shopping bags between some of the tiles.

[mybrainhurts]

ShadownINja said:

There's no felt. Just tiles on wooden beams. Only seems to be running down one beam but looks like something that's happened before as the previous owner stuffed shopping bags between some of the tiles.

...he wasn't an MP, then?

[R60EST]

saleen836 said:

R60EST said:

If the leak is coming from the first row , possibly the second row of tiles then it's more than likely your felt underneath that is perished and letting water in

Normal felt isn't actually waterproof it is only there to prevent snow getting through, I would check to make sure the tiles are all seated correctly/not broken etc.

Edited by saleen836 on Tuesday 19th May 20:23

I could show you drawings and diagrams to the contrary but I can't be bothered , the felt , when new, directs any small amount of water that has passed through the tiles into the gutter, once the felt degrades water then falls onto the soffitt board at first and onto the inner cavity wall as the degredation becomes worse. There are several products to rectify this and I've fitted many of them over the last 15 yrs which has cured the problem . I am not a roofer BTW , but I do have a lot of experience of this particular problem

[Busamav]

R60 is correct about eaves felt being a problem ,

BUT, if you are relying on felt to keep the water out then your roof has already failed for one reason or another.

Possible slipped / broken tiles ?

[ShadownINja]

Busamav said:

R60 is correct about eaves felt being a problem ,

BUT, if you are relying on felt to keep the water out then your roof has already failed for one reason or another.

Possible slipped / broken tiles ?

Indeedy. Nothing slipped as far as I can see. Just that water can blow in through gaps. The angle of the roof is only 30 degrees or so, rather than what looks like 45 degrees for "normal" roofs.

[V12Les]

Old property by the sound of it, clay tiles?. Get the ridge tiles checked if no obvious broken /slipped tiles.

[ShadownINja]

V12Les said:

Old property by the sound of it, clay tiles?. Get the ridge tiles checked if no obvious broken /slipped tiles.

1930s I think. It looks like the water is coming in near the apex. The roof is very geometric like a flattened pyramid and it's running down the centre of one face of the pyramid rather than a ridge.

I wonder if I can just squirt foam in between the gaps where the water is coming in or is that the most idiotic suggestion ever on PH?

[V12Les]

ShadownINja said:

V12Les said:

Old property by the sound of it, clay tiles?. Get the ridge tiles checked if no obvious broken /slipped tiles.

1930s I think. It looks like the water is coming in near the apex. The roof is very geometric like a flattened pyramid and it's running down the centre of one face of the pyramid rather than a ridge.

I wonder if I can just squirt foam in between the gaps where the water is coming in or is that the most idiotic suggestion ever on PH?

Erm...no.
If you have water coming in then it will only divert it, foam is good but not in this instance.
It sounds like you need to get someone up on a roof ladder and have a look.
Im still with the ridge tile/pointing, something you wont see untill your actually on the roof im affraid.

[ShadownINja]

V12Les said:

ShadownINja said:

V12Les said:

Old property by the sound of it, clay tiles?. Get the ridge tiles checked if no obvious broken /slipped tiles.

1930s I think. It looks like the water is coming in near the apex. The roof is very geometric like a flattened pyramid and it's running down the centre of one face of the pyramid rather than a ridge.

I wonder if I can just squirt foam in between the gaps where the water is coming in or is that the most idiotic suggestion ever on PH?

Erm...no.
If you have water coming in then it will only divert it, foam is good but not in this instance.
It sounds like you need to get someone up on a roof ladder and have a look.
Im still with the ridge tile/pointing, something you wont see untill your actually on the roof im affraid.

Oh, ok, thanks for the advice. Will get someone in who likes heights.

[b2hbm]

R60EST said:

saleen836 said:

R60EST said:

If the leak is coming from the first row , possibly the second row of tiles then it's more than likely your felt underneath that is perished and letting water in

Normal felt isn't actually waterproof it is only there to prevent snow getting through, I would check to make sure the tiles are all seated correctly/not broken etc.

Edited by saleen836 on Tuesday 19th May 20:23

I could show you drawings and diagrams to the contrary but I can't be bothered , the felt , when new, directs any small amount of water that has passed through the tiles into the gutter, once the felt degrades water then falls onto the soffitt board at first and onto the inner cavity wall as the degredation becomes worse. There are several products to rectify this and I've fitted many of them over the last 15 yrs which has cured the problem . I am not a roofer BTW , but I do have a lot of experience of this particular problem

I've got the same problem on a small extension on our house, and it's as you say, the bottom edges of the felt has degraded. It only comes in when the wind is in a specific direction with heavy rain, and doesn't look to be coming in higher up the roof.

I bodged it last year by lifting the lower tiles & slipping some felt in place, but I'd be very interested if there's a "proper" solution because I don't expect my bodge to last for that long. Are these products generally available from places like Jewsons/Wickes/etc ?

[Busamav]

ShadownINja said:

Nothing slipped as far as I can see. Just that water can blow in through gaps. The angle of the roof is only 30 degrees or so, rather than what looks like 45 degrees for "normal" roofs.

If you have plain tiles , the min pitch is 35' I doubt your roof would be less than that

[ShadownINja]

Busamav said:

ShadownINja said:

Nothing slipped as far as I can see. Just that water can blow in through gaps. The angle of the roof is only 30 degrees or so, rather than what looks like 45 degrees for "normal" roofs.

If you have plain tiles , the min pitch is 35' I doubt your roof would be less than that

I'll take your word for it. I'm not climbing up there with a protractor.

[mrmaggit]

b2hbm said:

R60EST said:

saleen836 said:

R60EST said:

If the leak is coming from the first row , possibly the second row of tiles then it's more than likely your felt underneath that is perished and letting water in

Normal felt isn't actually waterproof it is only there to prevent snow getting through, I would check to make sure the tiles are all seated correctly/not broken etc.

Edited by saleen836 on Tuesday 19th May 20:23

I could show you drawings and diagrams to the contrary but I can't be bothered , the felt , when new, directs any small amount of water that has passed through the tiles into the gutter, once the felt degrades water then falls onto the soffitt board at first and onto the inner cavity wall as the degredation becomes worse. There are several products to rectify this and I've fitted many of them over the last 15 yrs which has cured the problem . I am not a roofer BTW , but I do have a lot of experience of this particular problem

I've got the same problem on a small extension on our house, and it's as you say, the bottom edges of the felt has degraded. It only comes in when the wind is in a specific direction with heavy rain, and doesn't look to be coming in higher up the roof.

I bodged it last year by lifting the lower tiles & slipping some felt in place, but I'd be very interested if there's a "proper" solution because I don't expect my bodge to last for that long. Are these products generally available from places like Jewsons/Wickes/etc ?

There is a solution to this problem, but generally only the Roofing or Builders Merchants stock them. The ones we do are refurbishment trays, they slide under the felt, sit on top of the fascia, and overhang the gutter, so any water penetrating trickles into the gutter. They are also available for profiled tiles with built-in combs that prevent birds and insects entering the roof at eaves level.

The water is entering in the original case either through cracked tiles or too low a pitch of roof (I suspect).

You will need a roofer to go and have a look. Sometimes roofs are not built correctly to start with, so you get problems from day one. Ideally, you should be looking at a strip and renewal, but this obviously depends on the state of the roof and the importance of the structure to you.

[mk1fan]

ShadownINja said:

Any ways to stop this? Quite windy so rain is coming in.

This water would be caught by an underfelt and the directed out into the gutter. Water will always run back under tiles when the wind picks up, hence the underfelt. I assume you mean it only comes in when it's windy and that in 'unwindy' rain it doesn't leak.

If your roof doesn't have underfelt then it either very old or been redone on the cheap and incorrectly (current Building Regs require underfelt).

The fix for this is to lift the tiles, underfelt and relay the tiles.

It could also be that the wrong tile has been used for the pitch of the roof. Again the same fix is required but using the correct tiles.

It coulds also be that the tiles have been laid incorrectly. Again the same fix is required.

Get a couple of roofers in to look at it and to give you itemised estimates. Any reputable roofer will do this and detail their guarantees too.

If it leaks in 'unwindy' rain too then you've got some tiles that have moved. A good roofer can replace / reseat these tiles locally without the need to take the whole roof up.

[mk1fan]

ShadownINja said:

I wonder if I can just squirt foam in between the gaps where the water is coming in or is that the most idiotic suggestion ever on PH?

This will just lift the surrounding tiles and open up a hole. Foam isn't water proof either. Finally, you'll stick the tiles together so if you did re-roof the house you'll need to smash the tiles out and clay tiles aren't cheap. So don't do it.

An alterantive would be to use a spray foam insulation on the wole of the underside of the roof. This would stop water getting through. But again sticks all the tiles together and the tiles need to be secured and whole else you'll end up with foam all on the outside of the roof too.

[ShadownINja]

Thanks, mk1fan. It doesn't leak when there's no wind. Looks like felt is the way to go.