PVC Gutter downpipe identification

Irish Steve

Have a job to do for a friend, he has a flat roof extension, and the original installers ( some time ago) didn't put in an extended drop on to the high level roof downpipe, so all the water from the upper roof is being discharged over the felt on the flat roof, which is not ideal.

I need to reroute the downpipe, it's probably somewhere between 20 & 30 years old, given the age of the estate

I can put an extension on the gutter around the flat roof area, but the problem I have is identifying the original downpipe in order to get some extra fittings to re route it. It's PVC, black, square, and the outside measurement is 67mm, which seems to be larger than current square downpipes.

Anyone any idea who the original manufacturer would have been, and if it's still possible to get fittings for that size pipe?

Thanks

Steve

DublinDilbert

Irish Steve wrote: »

Have a job to do for a friend, he has a flat roof extension, and the original installers ( some time ago) didn't put in an extended drop on to the high level roof downpipe, so all the water from the upper roof is being discharged over the felt on the flat roof, which is not ideal.

I need to reroute the downpipe, it's probably somewhere between 20 & 30 years old, given the age of the estate

I can put an extension on the gutter around the flat roof area, but the problem I have is identifying the original downpipe in order to get some extra fittings to re route it. It's PVC, black, square, and the outside measurement is 67mm, which seems to be larger than current square downpipes.

Anyone any idea who the original manufacturer would have been, and if it's still possible to get fittings for that size pipe?

Thanks

Steve

Did you try b&q? Sometimes good to get odd sizes.... This one says 65mm, so with some filling/sanding down you should get something to fit. http://www.diy.com/nav/fix/plumbing-central-heating/guttering/square_line_guttering/-specificproducttype-downpipes___sockets/FloPlast-65mm-Square-Pipe-Socket-White-11577624?skuId=12088330

I think the tin square down pipes the likes if goodwins sell are 61mm, they should sell you a coupler that you can shove inside the existing pipe and take a 61mm pipe out.

Will probably take a little trial and error, but should be too hard to get something yo work. You can use fusetite on these too once you've got the parts to fit.

Irish Steve

Thanks for that, I'd not thought of B & Q as such, but now you mention it, that's a good idea, as I suspect the gutter on this house could well be Imperial size, and B & Q tend to have more of that sort of thing. Once I can find a fitting that will go on to 67, I have the rest of the pipe I need, it's left from the upgrade we've just done on the gutter around the flat roof area, and yes, it's 61mm, so the fittings won't go onto the old black that's there. If the worst comes to worst, a slot cut with a Dremel will allow me to squeeze it into the smaller fitting, and I can then weld a piece of pipe on the outside to close the slot, but I was hoping not to have to resort to that sort of modification unless there's no alternative.

Will report back when the job is done.

Cheers

gctest50

70mm do ?


http://www.goodwins.ie/c-1235-black-amazon-downpipe-system.aspx

http://www.goodwins.ie/p-1732-osma-amazon-downpipe-adaptor-black.aspx

Irish Steve

Might indeed be a possible, and the other idea that may be quicker would be to put a hopper head on the wall, as that will avoid any butchery,

Thanks

M.T.D

A hair dryer will often soften the plastic enough to shrink or stretch it fit another brand of pipe

Irish Steve

M.T.D wrote: »

A hair dryer will often soften the plastic enough to shrink or stretch it fit another brand of pipe

IF all else fails, it will come to that, the snag being that 67 into 61 is quite a lot to squeeze. Might have to take a slot out with a Dremel to reduce it, but that's last resort.

DublinDilbert

Irish Steve wrote: »

IF all else fails, it will come to that, the snag being that 67 into 61 is quite a lot to squeeze. Might have to take a slot out with a Dremel to reduce it, but that's last resort.

A lot easier to push the 61mm up inside the 67mm If it's 67mm on the outside the inside is probably more like 63mm..... if your stuck cover the smaller pipe in TEK7 :eek:

thesteve

Did you ever get this sorted? I'm facing a similar issue myself in putting a lean-to roof on the side of my house. All square gutters / downpipes / fittings seem to be 65mm and when I went to use a branch to join to the downpipe on my house, I discovered it's around 70mm and the branch I got is too small!

Did the standard size change in the last 10 years?

rdd

@thesteve: did you find them anywhere?

I'm facing the same issue. The house is 15 years old and has those 67-68 mm square downpipes. I need 1.5m and can't find it in any woodies / brooks / chadwicks etc.

the_pen_turner

rdd wrote: »

@thesteve: did you find them anywhere?

I'm facing the same issue. The house is 15 years old and has those 67-68 mm square downpipes. I need 1.5m and can't find it in any woodies / brooks / chadwicks etc.

what do you need. is it just a down pipe.
you could heat it and widen it out to fit over the other one. not ideal but it works.