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Picture of how to repair a leaking gutter union joint (and poly tunnel)
here's an effective way to carry out gutter union joint repairs 

Step 1:

Picture of
you'll need roof repair compound and weed control fabric. do not use bitumen, it is cheaper but it is not the best product as it is not sticky enough.
 
AndrewB11 year ago

yes there is I had a small leak the other day after pondering on the subject I came up with a solution (BEING A CYCLIST i HAD LOADS OF USELESS INNER TUBE) so I cut off a length of tube and unhinged the guttering placed the strip of tube in the gap of the joint where the guttering was laid and resealed it by clipping it back into place it works no leaks

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robz40 (author)  AndrewB11 year ago

very good!

Very ingenious. I wonder if there is something else that can be used to apply it without burning a paintbrush.
robz40 (author)  explosivemaker2 years ago
DIY paint brush: stick, elastic band and a hair cut to the wife I would guess.... :-)
Next step....google "how to pitch a tent"

Might just use a few pieces of thin cardboard. Seems more flexible than a shim.
Bill WW2 years ago
Nice work, Robz.
Never though of using the weed fabric, although there is a partial roll somewhere in a corner of my garage.
It became obvious to me years ago that using compound only simply will not work.
robz40 (author)  Bill WW2 years ago
Initially I thought of a rag or something but weed fabric proved to be ideal as it is porous, thin, pretty strong and made to stay outside for years anyway. It ticks all the boxes.
blkhawk2 years ago
Gutters should run the whole length of your house. Prior to have my gutters replaced they were butted together but, not like in your pictures. You did the right thing by applying a coating of roofing cement.
robz40 (author)  blkhawk2 years ago
Yes you are right. It should but that's the way it was installed years ago, now waiting for the rain not a hard thing to get in Britain. And you have a nice set of instructables.
blkhawk robz402 years ago
Well thank you for your kind words! I hope you fixed the leaky gutters.
robz40 (author)  blkhawk2 years ago
yes , tested last night with the rain, it works like a treat.
vincent75202 years ago
Well done !…
Step 12 :
Rest on the couch and watch Alfred Hitchcock's move Vertigo !!…

seolfor2 years ago
Thanks for posting this. I have the same problem with my gutters. I've tried the silicon caulk, which was ok for about a year, but then it started leaking again. I'm going to try this, now.