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View Full Version : So I've got a bit of a leak in my garage roof... but there's no hole or crack?


Paul the 6th
23-11-08, 10:50 PM
New house, new garage full of carp soon to be emptied out and turned into my dream workshop (where I can learn how to undo bolts and drill bits of wood for no reason whatsoever)...

Only trick is that there's about 2-3 mini leaks in the corrugated roofing. It's like the old asbestos type stuff, and it has to rain hard & for quite a while for the water to soak through and start dripping slowly onto my wooden ikea draws... There's no obvious holes or cracks nearby, so I'm a bit baffled as to how exactly it's happening. Are there any products on the market to fill this kind of thing up? I've been considering some kind of sealant or filler spread over the area's where water's creeping in but I've not experience with this kind of stuff and I can only see the situation getting worse if I do try anything random.

Any advice for stopping this is greatly appreciated :)

ThEGr33k
23-11-08, 10:54 PM
New roof... :p

kwak zzr
23-11-08, 10:55 PM
mine was like this and you'll prob find like me you have hairline cracking in the ageing roofing pannels, first i tryed silicone on the cracks, then i tryed black cold bitumen on the roof (2 coats) sorry but nothing worked so i needed to take drastic action!

i purchased a firestone pond liner 20ft x 10ft for about £100 from a garden centre and put this ontop and trimmed it with treated lath, its been dry ever since and now ive noticed companys using the same rubber liner on proper flat roof house extensions.

kwak zzr
23-11-08, 10:56 PM
New roof... :p

asbestos is too expensive and dangerous to move yourself

monkey
23-11-08, 10:56 PM
I'm sure you know already but don't drill, cut or break the roof if you think its asbestos!

You're own garage. You lucky, lucky man.

Paul the 6th
23-11-08, 10:57 PM
kwak, allow me to buy you a beer or give you a cuddle at the ar. Guessing it's available from the likes of B&Q maybe? And forgive my ignorance, bu whats treated lath?

ThEGr33k
23-11-08, 10:57 PM
asbestos is too expensive and dangerous to move yourself


Pfff. Rubbish. Just dont breath for a bit :p.

My grandad used to work with it all the time when he was plumbing back in the day, He is still going well at 73. ;)

dizzyblonde
23-11-08, 10:58 PM
you could try some of this
http://www.waterproofingdiy.co.uk/pages/marley_homepage/product_library/product_page/default.aspx?CatID=198&ProdID=48

its about 7.99 from wilkinsons. I did a temp repair with it on my threshold on the front door with it.....it ain't leaked since. Some of the mastik was obviously cracked but i couldn't see it

Dunno what it is but itss like a spray on bitumen stuff. Got another can of it to seal the shed this week, got a leak under the frame

bris
23-11-08, 10:58 PM
Check the felt underneath the roof, if this has a tear in it, it will be the cause of the problem.

Paul the 6th
23-11-08, 11:00 PM
I'm sure you know already but don't drill, cut or break the roof if you think its asbestos!

You're own garage. You lucky, lucky man.

trust me, I'm not taking it for granted for one minute :)
Moved in:
http://www.godesign.me.uk/images/New_Folder/IMG_0025.JPG
2 days later:
http://www.godesign.me.uk/images/New_Folder/IMG_0061.jpg

But half that stuff is for sale or destined for the skip... :) gonna evict the spiders, paint the floor & walls, new strip lights, shelves, a proper work bench with a vice and a bench drill, tools neatly arranged on the wall, a glass front cube fridge, calor gas fire, stick an old computer with added wifi in there, stereo & some beers.... If carlsberg did garages, they'd be shiiiite compared to mine :razz: just need to fix the leak

kwak zzr
23-11-08, 11:01 PM
kwak, allow me to buy you a beer or give you a cuddle at the ar. Guessing it's available from the likes of B&Q maybe? And forgive my ignorance, bu whats treated lath?

its expensive stuff to buy but works a treat and has a life time warranty for keeping water in so why cant it keep it out lol :) i was surprised to see company's now using it, i did mine about 3 years ago.

kwak zzr
23-11-08, 11:01 PM
when i say lath i mean roofing lath, the wood stips that roof tiles hang on.

Paul the 6th
23-11-08, 11:03 PM
righty ho, think I'll have to get up there on the next dry day and have a proper look to see what the crack is...


i'll have a look into your stuff as well dizzee - could be a cheaper option maybe :)

kwak zzr
23-11-08, 11:05 PM
http://www.ukpondliners.com/cat2.html

dizzyblonde
23-11-08, 11:08 PM
righty ho, think I'll have to get up there on the next dry day and have a proper look to see what the crack is...


i'll have a look into your stuff as well dizzee - could be a cheaper option maybe :)

well its a short term option. If it cures it, you'll then know where to fix it properly, and maybe save yourself a little money. They also do a tin of stuff in Wilkinsons too my the same people
http://www.waterproofingdiy.co.uk/files/584AD9EC-7632-415A-8F1C-9B1401058D48.aspx/Emergency%20Roof%20Repair.jpg
may be better in your case, in fact I've just found something on their site that i might need...lol

Paul the 6th
23-11-08, 11:08 PM
reet - will try dizzee's when I'm back from warrington & huntingdon on wednesday night/thursday morning... if that doesn't work, I'm gonna have to bring out the big guns... pond panty liners. Only thing is, I'd have to staple it down along each side of the garage roof & it would be exposed to the elements - would this cause any problems? Or does it have to have some kind of overlayer?

kwak zzr
23-11-08, 11:10 PM
i'll post a piccy tomorrow of how i did mine.

now i have a carpet in there and a sofa/hifi/tv/lighting/sockets.

skeetly
24-11-08, 12:04 AM
Flexacryl.
Comes in a few different colours and you can put it on even if the roof is wet.
Problem is you need to remove any vegy growth off the roof first and the bloody thing is asbestos. Back in the old days we used to wire brush the roof when it was wet and bag it all up but even this is pretty risky.
It will be fine cracks and capillary attraction where the joints are normally.
Youll need a few tins to coat the whole roof and make it tidy and it'll cost you afew quid but it WILL fix it.

http://www.resapol.com/datasheets/FLEXACRYL.PDF

Thinking about it a strong bleach solution would kill the moss etc and be safer than brushing the things.
A 2.5kg tin is about 25 quid and it will cover 2m square if your lucky.

Baph
24-11-08, 09:33 AM
Paul, if Dizz's option doesn't work, before you go to the lengths of pond liners like kwak... I'd be tempted to just buy a new corrigated sheet from B&Q & lay that over the area (securing it down properly obviously).

Shame this didn't happen to you a few months back, as I've just gotten rid of a corrigated shed (dismantled/detroyed it - great fun - then took it to the tip).

dizzyblonde
24-11-08, 09:45 AM
the corrugated roofing. It's like the old asbestos type stuff,



We can only assume its asbestos. However looking at the pics I doubt it will be on a garage that looks so modern. Its probably like some sort of concrete corrugated stuff..or something else other than asbestos.

Incidently, my mates house in France is under permanent renovation, and she had some panels all round her dining room that looked suspiciously like asbestos (the french seemed to love filling their houses with it at some point) She stumbled across a friend who was having an asbestos assessor out on their house, and she cheekily gave him a sample..to which he said it was concrete sheet....and saved her lot of expense and careful removing.

timwilky
24-11-08, 10:22 AM
Looks to be a fibre cement sheet.

I dread asbestos. On my last site there was a lot of it insulating pipes etc. Just where we need to run data cables. I would always report it and get the usual, It will be safe so long as you do not disturb it. Err but what about all the 60 year old dust in here etc.

So if I ever develop Mesothelioma I will need to sue my employers having exposed me on a site that was knocked down 10 years ago. You can bet there will be no records that I ever reported exposure etc. any witnesses will be long gone and the company/insurance etc will be down the tube years ago as well

scooby2102
24-11-08, 12:45 PM
Paul, had the same problem with mine up to a month ago, had a look on the outside and found some leaves and moss restricting the gutter and downpipe which meant that in heavy rain, the water started to stack up where the corrugated sheets join and then crept in under the joins.

I removed the insulation on the inside and sealed the corrugated joins, removed the offending carp from the outside and its fine now.

Check also where the retaining bolts come down through the sheets, mines had 2 leaks around 2 of the bolts, I undid the nuts then packed them with rubber washers and some of the roof sealer mentioned above.

Its all water tight and roasty toasty now so ma babies are fine and comfy :p

Dangerous Dave
24-11-08, 12:49 PM
Is this similar to the black rubber type paint?

http://www.waterproofingdiy.co.uk/files/584AD9EC-7632-415A-8F1C-9B1401058D48.aspx/Emergency%20Roof%20Repair.jpg

If so it works a treat.

kwak zzr
24-11-08, 03:18 PM
http://i86.photobucket.com/albums/k120/kwak-zzr/DSCF0008.jpg
http://i86.photobucket.com/albums/k120/kwak-zzr/DSCF0003.jpg
http://i86.photobucket.com/albums/k120/kwak-zzr/DSCF0006.jpg
http://i86.photobucket.com/albums/k120/kwak-zzr/DSCF0002.jpg

Paul the 6th
24-11-08, 03:49 PM
wow kwak! that looks bang tidy. I'll try the super sludge glue stuff everyone else has recommended first then see if I can afford that fancy stuff :D no problems with it flapping about at all then?

kwak zzr
24-11-08, 03:55 PM
narr, its quite heavy stuff and i sealed all the inside with that expanding foam stuff, my garage is only one of those prefab ones but its dry now :)

MrMessy
24-11-08, 11:06 PM
1) Are you sure it is not condensation? Particularily bad at this time of year.
2) Best bet is to bite the bullet and replace it with steel cladding, preferably the insulated kind. Jacksons at York sell it and do seconds.
3) I am doing mine with galvanised corragated sheeting and insulating the underneath with Kingspan/polystyrene.
4) Check at your local tip if you can dispose of the old roofing at the tip. I think it could be classed as asbestos waste because it used to be asbestos cement. I will make some enquires at work. We are having some artex ceilings removed and that is classed as asbestos waste!

yorkie_chris
24-11-08, 11:18 PM
Sort those back windows out too, they don't look like the most secure.

dizzyblonde
24-11-08, 11:19 PM
Sort those back windows out too, they don't look like the most secure.


Its ok, if someone breaks in, they'll be scared off by Paul in his bungle bear suit:p

Paul the 6th
24-11-08, 11:26 PM
gonna cover the windows in leather cloth for the time being. The bikes going to be ground anchored facing towards the back of the garage so it will need to be backed out with the steering lock snapped off and chain removed... The front door is electric roller shutter kind, so i'll kill the power to the garage in the fuse box once I've got all my bits in there.

Any tips for making the rear windows more difficult to get through if they're smashed up... all well and good not being able to see through them but I doubt itll make any difference to my tools if someone goes through with a smash n grab

yorkie_chris
24-11-08, 11:28 PM
Angle iron frame matching the existing frame, 3 bars across with mesh in between, dust the glass with primer so you still get some light but it goes opaque.

Paul the 6th
24-11-08, 11:29 PM
just drill the iron frame and screw into the existing brickwork then?

eyup yc long time no speaky - been busy/ill/away/diaoreahahaha/ill again. Fancy having a stab at the shock & springs sometime maybe? Still got wedge sat waiting for you :)

yorkie_chris
24-11-08, 11:37 PM
Yeap no problem