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Plastering & Rendering

Bell casts inserted after scratch coat

Anonymous user 23/02/2024 - 3.03 PM

Hi, The renderer has scratch coated from top to bottom crossing the DPC along two walls of the house. When I questioned them about why they've bridged the DPC they say they'll be cutting a groove into which they'll be putting the beading. Has anyone ever hear of this being done this way before, or is this just an after thought for something they forgot to do? This sounds dubious to me. Cheers, Tim

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3 Answers

Anonymous user

Hi Tim Making a groove after it will be harder than placing the bellcast bead at first . It looks like they were not going to place a bell cast at all . You put the bellcast just above the DPC so water gos out of building. Thanks Alex
Answered6 June 2016
2

Ubuilt

Rating: 4.7 out of 5
Bristol
Devil in the detail here possibly …. First point I presume the house was always rendered and he is essentially redoing otherwise what follows might not help... His "cutting a groove for the bead" sounds like a convenient lazy bit of BS baffles Brains answer to me however……… it is not uncommon for Older houses to be rendered to the ground essentially bridging the what exists of the DPC with a thin coat of render and fitted with a bell cast to deflect water away from the base of the building. Theres nothing amiss with fitting beads on the second coat after scratch coat, i.e. sponging off"finish" below bell cast only to then fit BC and angle beads on windows/corners and second coat the larger sections. In essence the DPC is designed a horizontal barrier and a thin coat of waterproof render is not a considerable threat to that DPC. Its not ideal but in common in victorian property …but many houses e.g. 1930s have a brick faced footer with bell cast rendered wall above. The main deference is the 1930"s footer bricks are of engineering brick quality whereas the common victorian brick is very absorbent and needs to be rendered to protect their friable nature. i.e. Breaking down from freeze /thaw.
Answered12 June 2016
2

Anonymous user

Hi there yes they have either forgot or wasn't going to put the bell Cast bead in at all I would avoid
Answered6 June 2016
0