concrete gutters

[hev]

Need some advice our concrete gutters have sprung a leak we cannot afford the option of removing them so has anyone had the same trouble and is there any particular sealing products that you have used successfully many thanks in advance.

[The Builder]

Sorry to be a bit dim Hev, but I don't understand what you mean by "concrete" gutters :o)

[hev]

flintlock concrete gutters used in council housing in the 1960's

[Old_Geezer]

Lasted well then. Don't have them myself so can only speculate, but; is this a hole, or a join that's gone wrong ?

[hev]

joints have gone in several places we used bitumen on the back one when it went but wondered if there was anything better /longer lasting

[Old_Geezer]

That is probably what I would have suggested.

I do know that the well known telesales folk sometimes advertise miraculous products to fix leaks. You may want to check their DIY slots. Usually Sundays.

[4getmenot]

milliput

[4getmenot]

are you sure you cant get it fixed under your house insurance?

[twix123]

Our private houses also have Flintlock concrete gutters. The cheapest repair for leaks is bitumen paint, but the better repair specialists will re-line them and then cover with hot tar.

[The Builder]

Possibly think about having them re-lined with fibreglass/ployester resin ............. it's often done with lead or zinc valleys

[4getmenot]

they would line it with a resin liner rather than tar

[alavahalf]

If your concrete is a loose or crumbly, I dont think will get the fibre glass and resin to bond to it ...
If you were to use it ... it would have to go up under the tiles and slightly under the felt. It would also have to be spread down the face of the gutter and underneath.
Otherwise the water will get underneath it ... and it will float... that puts you back at square one.
Dont get me wrong, It will work but its a bit messy if you are not used to working with GRP.
As builder says it works well where you have a valley..I have personally made up gutters from fibreglass using the old broken zinc as a former.

If you want to do a good job without the great expense...I would go for Isoflex..you will get it at most DIY stores... and it's just a case of preparation and painting it on.
First of all get everything nice and clean and dry... buy the special primer and follow the instructions...then just apply the top coat of Isoflex.It should be the end of your problem if applied correctly....dont be tempted to go for a cheaper alternative.

[buildersmate]

These things are called FINLOCK, not Flintlock.
These are a well-known problem in the building industry, I'm afraid.
The Builder has alluded to some sort of possible solution which will last a few years.
Read here for a rather more complete expose on the whole issue (skip down the thread to the answer given by Oxfordlite, about 10 down). No, he isn't me in disguise.
http://www.diynot.com...iewtopic.php?t=169755

[hev]

Buildersmate - Obviously they are not that well known 'the builder' didnt know what a concrete gutter was. Apololgies for the incorrect naming of said gutters i stand corrected not that I'm sure it really matters. I have checked the link in your response and as I said in my original post I cannot afford to have them removed by an overpriced builder but thanks anyway.

[buildersmate]

No probs. I only put the info about the correct name in because if you know the right name, you stand more chance of searching for possible solutions. These things have a lot of 'previous'. I only know about them because they were were on my mum's house. The worst issue is that the guttering is set level, so the water doesn't actually naturally drain along them - it just sits there.

[AlBags]

Best Industrial systems now use a silicon product. Joints are raked and dried. Then re-applied joints with re-inforcing fibrous tape, then silicon sealant paint on whole surface.
I have seen GF repairs, and they are frankly a mess.

[gutterman]

Plygene gutterline is the best longterm repair solution

[gutterman]

try this link http://www.finlockgutterrepairs.com/

[AlBags]

http://www.delvemade....ucts/delcote-hpg.html