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Chat Area => General Discussion Area => Topic started by: zirk on 27 April 2012, 00:24:31

Title: Leaking Flat Roof.
Post by: zirk on 27 April 2012, 00:24:31
Spent most of the day moving buckets around and cleaning up any wet water patches, have a flat roof where I live thats decided to give up the ghost, probably got more water in the house than the local reservoir, any tips on a temporarily fix untill the Sun starts shining.

Looking at getting up on the roof this weekend, weather permitting, with a temp fix, was thinking about getting some Bitchamin and with a colar gas heater paint brush the leak, any super magic stuff out there that will sort the problem?

Chris.

Title: Re: Leaking Flat Roof.
Post by: Rods2 on 27 April 2012, 00:42:43
I did a temporary repaid on my flat roof using shed roofing felt, roofing nails and sealant on the seams total cost about £60. 18 months later still going strong with no leaks. I hope to renew it this summer, weather permitting.  :y :y :y

If the roof has chipboard panels, which many older roofs do, tread carefully.  :o :o :o
Title: Re: Leaking Flat Roof.
Post by: Kevin Wood on 27 April 2012, 00:52:06
You think that's bad. I came home to find a leaking barrel of home brew. Nearly cried. Took me ages to lick if up off the worktop. ;)

On a serious note, you can get some bitumen stuff in a mastic tube for sealing roofs. No heat required. Used some repairing the shed roof. I'll have a look and see if I've got the tube..

Of course, it depends if you have a single obvious leak or whether the whole thing's getting sieve-like. ;)
Title: Re: Leaking Flat Roof.
Post by: jonathanh on 27 April 2012, 08:35:20
and another word of warning, if the roof is made of strammet board ( compressed straw) popular in late 60s early 70s then tread very carefully, the stuff goes to mush when wet

is it small enough for a parge tarp?  just strap it on and wait until good weather?
Title: Re: Leaking Flat Roof.
Post by: Sir Tigger KC on 27 April 2012, 10:39:03
I've got one of these. Big, cheap and cheerful!!  :y  Not a long term solution obviously!!  ::)  :)

http://www.diy.com/nav/build/building-materials/tarpaulins-sheets-sacks/tarpaulins/B-and-Q-General-Purpose-Tarpaulin-Blue-4-9m-x-7-9m-9273088

Title: Re: Leaking Flat Roof.
Post by: omega3000 on 27 April 2012, 11:17:47
I've got one of these. Big, cheap and cheerful!!  :y  Not a long term solution obviously!!  ::)  :)

http://www.diy.com/nav/build/building-materials/tarpaulins-sheets-sacks/tarpaulins/B-and-Q-General-Purpose-Tarpaulin-Blue-4-9m-x-7-9m-9273088
Yeah i got one of those to drape over the shed as its sprung a few leaks  ::) you can buy the black tar stuff in tubes ...as for that stuff called shed felt ...i found its very thin so will be looking for some thicker grade stuff weather permitting  ::)
Title: Re: Leaking Flat Roof.
Post by: bootie on 27 April 2012, 13:27:35
Not sure if you can do this where you are but, few years back we had the same thing, leaking flat roofs. Did a bit of research and it turns out we could apply for a grant from the council. With that you could decide either to be means tested or just go for a 50% grant!
Well, I thought to meself, why the hell not, after all I have been paying them council tax all those years might as well get something back. Went the 50% route, had to give them all my financial details well, just the same as if being means tested, apparently, it's just a formality when they see the 50% box ticked they just approve the best quote. All has to be to the latest building regs and all that but that house got a 25 year guarantee on the work done, nice new fibreglass roofs...
All part of the plan to get it done up and sold!

Have a gander at what the council might be able to provide you with. Oh yeah, and it was private owned house, not council or even ex council stock.

Might help a bit.

Jon
Title: Re: Leaking Flat Roof.
Post by: paul.lovejoy on 27 April 2012, 14:07:43
Chris if its just patches for now get some trowel on felt adhesive you can get a small roll of top sheet they call it capping sheet about 200-300mmm wide and some felt nails

all from wickes

trowel on adhesive and nail felt patch all round should do the trick temp repair though

shame your not in ramsgate half way trough a flat roof now :y
Title: Re: Leaking Flat Roof.
Post by: paul.lovejoy on 27 April 2012, 14:10:43
the above is assuming you can see the damaged felt/upstand and its not getting past any flashings and finding the nearest way out :y
Title: Re: Leaking Flat Roof.
Post by: zirk on 27 April 2012, 14:27:34
I did a temporary repaid on my flat roof using shed roofing felt, roofing nails and sealant on the seams total cost about £60. 18 months later still going strong with no leaks. I hope to renew it this summer, weather permitting.  :y :y :y

If the roof has chipboard panels, which many older roofs do, tread carefully.  :o :o :o

Thanks Rods. :y
Title: Re: Leaking Flat Roof.
Post by: zirk on 27 April 2012, 14:31:17
You think that's bad. I came home to find a leaking barrel of home brew. Nearly cried. Took me ages to lick if up off the worktop. ;)

On a serious note, you can get some bitumen stuff in a mastic tube for sealing roofs. No heat required. Used some repairing the shed roof. I'll have a look and see if I've got the tube..

Of course, it depends if you have a single obvious leak or whether the whole thing's getting sieve-like. ;)

Funny you mention Beer as thats exactly what the water looks like, guessing it being soaked up by the wood, hmm, looks like your beer got soaked up by the wood as well! (Kevin Wood)
:y
Title: Re: Leaking Flat Roof.
Post by: zirk on 27 April 2012, 14:33:52
and another word of warning, if the roof is made of strammet board ( compressed straw) popular in late 60s early 70s then tread very carefully, the stuff goes to mush when wet

is it small enough for a parge tarp?  just strap it on and wait until good weather?

Got a sneaky suspicion you may be right there, its a 70's Wimpey build and the interior walls are compressed straw. :y

Edit: whats a perge tarp??
Title: Re: Leaking Flat Roof.
Post by: zirk on 27 April 2012, 14:38:07
Not sure if you can do this where you are but, few years back we had the same thing, leaking flat roofs. Did a bit of research and it turns out we could apply for a grant from the council. With that you could decide either to be means tested or just go for a 50% grant!
Well, I thought to meself, why the hell not, after all I have been paying them council tax all those years might as well get something back. Went the 50% route, had to give them all my financial details well, just the same as if being means tested, apparently, it's just a formality when they see the 50% box ticked they just approve the best quote. All has to be to the latest building regs and all that but that house got a 25 year guarantee on the work done, nice new fibreglass roofs...
All part of the plan to get it done up and sold!

Have a gander at what the council might be able to provide you with. Oh yeah, and it was private owned house, not council or even ex council stock.

Might help a bit.

Jon

Thanks Bootie, will bear that in mind, yea its a private dwelling so may have a go later in the summer funds permitting

:y
Title: Re: Leaking Flat Roof.
Post by: aaronjb on 27 April 2012, 14:40:21
Got a sneaky suspicion you may be right there, its a 70's Wimpey build and the interior walls are compressed straw. :y

So if you huff and you puff .. you can remodel your house? ;)

Quote
Edit: whats a perge tarp??

I reckon that's a typo for 'large'..
Title: Re: Leaking Flat Roof.
Post by: zirk on 27 April 2012, 14:41:35
Chris if its just patches for now get some trowel on felt adhesive you can get a small roll of top sheet they call it capping sheet about 200-300mmm wide and some felt nails

all from wickes

trowel on adhesive and nail felt patch all round should do the trick temp repair though

shame your not in ramsgate half way trough a flat roof now :y

the above is assuming you can see the damaged felt/upstand and its not getting past any flashings and finding the nearest way out :y

Thanks Paul, Wicks is on visit list this weekend, weather permitting.

:y
Title: Re: Leaking Flat Roof.
Post by: zirk on 27 April 2012, 14:45:07
Got a sneaky suspicion you may be right there, its a 70's Wimpey build and the interior walls are compressed straw. :y

So if you huff and you puff .. you can remodel your house? ;), dont say that Im not having a good year  :D

Quote
Edit: whats a perge tarp??

I reckon that's a typo for 'large'..

So, Large tarp,? trap, tap, crap, carp, tart?
Title: Re: Leaking Flat Roof.
Post by: aaronjb on 27 April 2012, 14:57:17
Large tarp I reckon.. though a large crap can be quite satisfying I don't think it'll seal the roof ;D
Title: Re: Leaking Flat Roof.
Post by: pauls on 27 April 2012, 15:32:19
I have a flat roof on my shed/work room and 2 year ago it leaked due to the middle sinking. Well been short of funds I needed to find a cheap way of repairing it until i could sort it out. Anyway happened to be in wilkinsons and i saw something called Marley waterproofing-roof renovator so i bought 2 tins of this and slapped it on with a big paintbush.   Anyway so good i have not needed to sort the roof out and the water sits up there in puddles but never goes through. :y
Title: Re: Leaking Flat Roof.
Post by: jonathanh on 27 April 2012, 15:42:57
Got a sneaky suspicion you may be right there, its a 70's Wimpey build and the interior walls are compressed straw. :y

So if you huff and you puff .. you can remodel your house? ;)

Quote
Edit: whats a perge tarp??

I reckon that's a typo for 'large'..

Yep typo, sorry I mean "large"
Title: Re: Leaking Flat Roof.
Post by: MikeDundee on 27 April 2012, 17:05:55
Chris if its just patches for now get some trowel on felt adhesive you can get a small roll of top sheet they call it capping sheet about 200-300mmm wide and some felt nails

all from wickes

trowel on adhesive and nail felt patch all round should do the trick temp repair though

shame your not in ramsgate half way trough a flat roof now :y

With your weight you should have known better, Hope you did'nt hurt yerself  ;D and cause to much damage to the roof ::)
Title: Re: Leaking Flat Roof.
Post by: MikeDundee on 27 April 2012, 17:09:31
Chris if its just patches for now get some trowel on felt adhesive you can get a small roll of top sheet they call it capping sheet about 200-300mmm wide and some felt nails

He means clout nails :y
Title: Re: Leaking Flat Roof.
Post by: MikeDundee on 27 April 2012, 17:18:27
I would recommend this as a temporary quick fix, see link below :y:, and if you need any advice or estimate costs for the flat roof replacement let me know :y 

http://www.wickes.co.uk/high-performance-acrylic-waterproofer/invt/240148/
Title: Re: Leaking Flat Roof.
Post by: paul.lovejoy on 27 April 2012, 17:44:58
Chris if its just patches for now get some trowel on felt adhesive you can get a small roll of top sheet they call it capping sheet about 200-300mmm wide and some felt nails

all from wickes

trowel on adhesive and nail felt patch all round should do the trick temp repair though

shame your not in ramsgate half way trough a flat roof now :y

With your weight you should have known better, Hope you did'nt hurt yerself  ;D and cause to much damage to the roof ::)

break me your still alive are you saying i am fat...i am on the see food diet :y
Title: Re: Leaking Flat Roof.
Post by: paul.lovejoy on 27 April 2012, 17:49:37
Chris if its just patches for now get some trowel on felt adhesive you can get a small roll of top sheet they call it capping sheet about 200-300mmm wide and some felt nails

He means clout nails :y
actually clout and felt although similar in appearance are differnt the felt nail has a larger head ::) you should know what i mean ;D labourer went to jewsons today to get 20mm felt nails and came back with 30mm clout nails :D :D
Title: Re: Leaking Flat Roof.
Post by: OOMV6 on 27 April 2012, 18:04:57
A bit of crap on my screen, and I read the title of the thread as "Leaking Fiat Roof". Guess this may not be unusual either.
Title: Re: Leaking Flat Roof.
Post by: Rods2 on 27 April 2012, 19:26:10
When you renew the roof if you use the self-adhesive undersheet and roofing felt, there is a roofing specialist in Luton that advertise on Ebay, that do these materials at about half the Wickes prices.

http://www.ebay.co.uk/itm/SELF-ADHESIVE-UNDERLAY-ROOFING-FELT-8mx1m-2-64-Metre-/260652916748?pt=UK_BOI_Ceilings_Walls_Roofing_ET&hash=item3cb01fe00c#ht_1800wt_952 (http://www.ebay.co.uk/itm/SELF-ADHESIVE-UNDERLAY-ROOFING-FELT-8mx1m-2-64-Metre-/260652916748?pt=UK_BOI_Ceilings_Walls_Roofing_ET&hash=item3cb01fe00c#ht_1800wt_952)

http://www.ebay.co.uk/itm/SELF-ADHESIVE-ROOFING-FELT-FINE-SAND-GREEN-MIN-7M-X-1M-/260817351836?pt=UK_BOI_Ceilings_Walls_Roofing_ET&hash=item3cb9ecf49c#ht_1642wt_952 (http://www.ebay.co.uk/itm/SELF-ADHESIVE-ROOFING-FELT-FINE-SAND-GREEN-MIN-7M-X-1M-/260817351836?pt=UK_BOI_Ceilings_Walls_Roofing_ET&hash=item3cb9ecf49c#ht_1642wt_952)

There is also a company in Newcastle on Ebay that have very good prices.

If the boarding is damaged or sagging, you will need to replace or cover with 18mm thick marine OSB or ply roofing sheets.

The water from the leak is brown from the bitumen.

If you have stains on the ceiling, use gloss undercoat to seal before repainting.

I hope this is on help.
Title: Re: Leaking Flat Roof.
Post by: paul.lovejoy on 27 April 2012, 20:06:08
Large tarp I reckon.. though a large crap can be quite satisfying I don't think it'll seal the roof ;D

not after a curry thats for sure but a good roast dinner crap with some straw mixed in should do the trick. beef pork or chicken will do ;D ;D ;D
Title: Re: Leaking Flat Roof.
Post by: Jukeboxnut on 27 April 2012, 21:50:34
I had a leak on my flat garage roof 3 years ago due to a large split in the felt which was just 15 years old.  A quick repair was achieved using self adhesive flashband readily available from B&Q etc.  I used a hot air gun and small plastic roller to apply it and the repair lasted for approximately 20 months until I had the roof recovered with a rubber membrane last year which is claimed to have life of 40 years (should see me out).
Title: Re: Leaking Flat Roof.
Post by: Vamps on 27 April 2012, 22:04:12
I had a leak on my flat garage roof 3 years ago due to a large split in the felt which was just 15 years old.  A quick repair was achieved using self adhesive flashband readily available from B&Q etc.  I used a hot air gun and small plastic roller to apply it and the repair lasted for approximately 20 months until I had the roof recovered with a rubber membrane last year which is claimed to have life of 40 years (should see me out).

How much did that cost? if you don't mind me asking, I really must get my garage roof sorted..... ::) ::)
Title: Re: Leaking Flat Roof.
Post by: Michael2.6 on 28 April 2012, 12:41:28
If you can try pitching the roof this will stop the water from lying on the roof and soaking in and coming though the ceiling

flat roofs are not very good

go for a pitch roof

it will cost you more to do it that way but cheaper in the long run.

Better than a bodged up job
Title: Re: Leaking Flat Roof.
Post by: Jukeboxnut on 30 April 2012, 21:04:45
Hi Vamps, I have a double garage with a  workshop attached so the overall width is 30 foot and the depth is 20 foot approximately.  I had the main garage roof decking replaced  with new sterling board and then the whole area covered with the rubber membrane so the total cost was  relatvely high because of the area and limited access.  However the actual rubber itself would only have cost about £400 if I did it myself.  I have seen kits to do a standard single garage for around £120 so not too bad for the long life quoted.  There is a lot of information on the process on the web.
Title: Re: Leaking Flat Roof.
Post by: Vamps on 30 April 2012, 21:41:49
Hi Vamps, I have a double garage with a  workshop attached so the overall width is 30 foot and the depth is 20 foot approximately.  I had the main garage roof decking replaced  with new sterling board and then the whole area covered with the rubber membrane so the total cost was  relatvely high because of the area and limited access.  However the actual rubber itself would only have cost about £400 if I did it myself.  I have seen kits to do a standard single garage for around £120 so not too bad for the long life quoted.  There is a lot of information on the process on the web.

Thanks for that, ideally some of the boards should be replaced, need to consider some options...... :D :D