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

How to chase big enough slot for Lead flashing?

Discussion in 'Roofing and Guttering' started by lozcozard, 22 Dec 2019.

  1. lozcozard

    lozcozard

    Joined:
    26 Apr 2017
    Messages:
    60
    Thanks Received:
    1
    Country:
    United Kingdom
    My angle grinder disc is 2mm or 3mm. How do I chase a higher gap? I can’t find any info about this. All images and videos show bigger gaps. I don’t think 3mm would be enough for lead and sealant especially where the lead will overlap.

    do I make 3 or 4 runs to get a gap 3 or 4 x the thickness of the blade?

    can I fix multiple blades to the grinder simulating a thicker grinder blade?

    Can’t seem to find blades that are like 10mm thick or more.

    And then what’s a good height for the chase? One site says 10mm but again, not much info online.

    Thanks
     
  2. Sponsored Links
  3. Notch7

    Notch7

    Joined:
    15 Sep 2017
    Messages:
    17,735
    Thanks Received:
    1,242
    Location:
    Sussex
    Country:
    United Kingdom
    are you chasing out mortar between brickwork?
     
  4. lozcozard

    lozcozard

    Joined:
    26 Apr 2017
    Messages:
    60
    Thanks Received:
    1
    Country:
    United Kingdom
    It’s pebbledash so if I go deep enough I’ll probably miss any motor and am assuming it could be brick.

    also the sloping edge of my canopy is against part of the house so at an angle that will go through brick.
     
  5. Ian H

    Ian H

    Joined:
    14 Sep 2010
    Messages:
    6,316
    Thanks Received:
    714
    Location:
    Rochdale
    Country:
    United Kingdom
    Do more than one cut. You can’t stack the blades.
     
  6. catlad

    catlad

    Joined:
    29 Jul 2011
    Messages:
    3,990
    Thanks Received:
    540
    Location:
    Lancashire
    Country:
    United Kingdom
    They do make thicker blades for that purpose.
     
  7. lozcozard

    lozcozard

    Joined:
    26 Apr 2017
    Messages:
    60
    Thanks Received:
    1
    Country:
    United Kingdom
    Ok but can’t for the life of me find thicker ones online. They don’t even specify the thickness online just the diameter and bore size. Not even on sites like Screwfix etc. I bought the one I have from Homebase and they’re all like 2mm to 3mm. Although I know Homebase would be a bit more limited to others but still, can’t find thicker ones online.
     
  8. Sponsored Links
  9. Charlie George

    Charlie George

    Joined:
    16 Mar 2018
    Messages:
    300
    Thanks Received:
    46
    Country:
    United Kingdom
  10. lozcozard

    lozcozard

    Joined:
    26 Apr 2017
    Messages:
    60
    Thanks Received:
    1
    Country:
    United Kingdom
    But is a mortar raking blade suitable for brick? I’ll be going through pebbledash but am likely to go through brick if I go deeper which I think I should as pebbledash doesn’t look deep enough.
     
  11. Charlie George

    Charlie George

    Joined:
    16 Mar 2018
    Messages:
    300
    Thanks Received:
    46
    Country:
    United Kingdom
    just use normal diamond blade and cut at different angle each pass until wide enough.
     
  12. Ian H

    Ian H

    Joined:
    14 Sep 2010
    Messages:
    6,316
    Thanks Received:
    714
    Location:
    Rochdale
    Country:
    United Kingdom
    Or if you want to be in the mortar do a vertical cut at one end to find it then follow it along level.
     
  13. datarebal

    datarebal

    Joined:
    1 May 2007
    Messages:
    2,517
    Thanks Received:
    406
    Location:
    Hampshire
    Country:
    United Kingdom
    use a bigger cutter... 240 or 300 mm the blade is thicker and gets you out of the render
     
  14. lozcozard

    lozcozard

    Joined:
    26 Apr 2017
    Messages:
    60
    Thanks Received:
    1
    Country:
    United Kingdom
    Just a quick update to say thanks I went to B&q and they have 8mm 115 discs so those worked. As it’s pebbledash I managed only 20mm deep but it was enough to get the hall clips in and hold the flashing. Had to get a few discs as they wear fast and a 15mm depth wasn’t enough after a bit of wear.
     
  15. 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

     
Sponsored Links
Loading...

Share This Page