1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Gully lead set up?

Discussion in 'Roofing and Guttering' started by Draughtsman, 3 Feb 2019.

Tags:
  1. Draughtsman

    Draughtsman

    Joined:
    30 Mar 2012
    Messages:
    570
    Thanks Received:
    3
    Location:
    Monmouthshire
    Country:
    United Kingdom
    My gully was never put in correctly and has always been iffy, I'll have to bite the bullet and get it replaced. The run is long and has rolled joints when apparently it should have steps to accommodate sliding laps.

    The lead is sat on a membrane (on top of ply) but I was wondering wether a membrane should really be be sandwiched between protective layers (geotextile?) to prevent membrane damage when the lead expands/contracts?

    Thanks.
     
  2. Sponsored Links
  3. Alastairreid

    Alastairreid

    Joined:
    21 Nov 2008
    Messages:
    6,651
    Thanks Received:
    1,080
    Location:
    uk
    Country:
    United Kingdom
    Ideally geotec would be used but the membrane will suffice for a small area.
     
  4. Draughtsman

    Draughtsman

    Joined:
    30 Mar 2012
    Messages:
    570
    Thanks Received:
    3
    Location:
    Monmouthshire
    Country:
    United Kingdom
    It's about 12m long.
     
  5. Makie

    Makie

    Joined:
    8 Mar 2018
    Messages:
    118
    Thanks Received:
    17
    Country:
    United Kingdom
    Do you have any pictures of the lead? If it is done correctly the membrane below it should not be an issue for you
     
  6. Draughtsman

    Draughtsman

    Joined:
    30 Mar 2012
    Messages:
    570
    Thanks Received:
    3
    Location:
    Monmouthshire
    Country:
    United Kingdom
    No images but I will get some.

    It has a 25° conc. slate roof on one side and a vertical, rendered neighbours wall on the other, there's a lead skirt cut in along the base of the neighbours wall. There are 2 rolled joints in the 12m straight run of gully, one rolled joint has degraded so I recently sealed it with bitumastic, there is a membrane below the lead but it leaks. I think that the central section needs raising so that there are no rolled joints, only sliding laps to allow movement. I think that fixity is creating problems. In the past there have been problems with expansion pushing the lead up in ridges which eventually cracked.
     
  7. datarebal

    datarebal

    Joined:
    1 May 2007
    Messages:
    3,305
    Thanks Received:
    675
    Location:
    Hampshire
    Country:
    United Kingdom
    rings a bell this one. simply changing one section wont work for long...destine to fail.

    do it properly,

    check out calder guide to good leadwork
     
  8. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
  9. Sponsored Links
Loading...

Share This Page