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    Chimney removal stack support calcs

    Hi guys I would like some advice on the following if possible.. We are planning on having the chimneys removed from downstairs and upstairs in a 3 bed semi, but leave the stack. Our neighbours have already removed the chimneys. Our neighbours are unlikely to agree to any stack removal, no one...
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    tanking cement backer boards?

    thanks fellas. They are by prowarm. It isn't a power shower so that's a plus i guess. From all the instructions i've seen with these waterproof core boards only the joints need sealing/taping. Your right i'm probably worrying too much. The cartridge sealer would work but not on corners i...
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    tanking cement backer boards?

    Hi all, Ive just been sealing and taping cement backer boards, the marmox type in my shower area(waterproof core)1 coat then the tape and a coat over the top. 1 more once its dried. I've done this on all joints including the edges of the tileable wet room tray, about 15m worth. Question is...
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    moisture on DPM edge

    Hi there, small issue i hope, I seem to have some moisture on the edge of the DPM. This bit had a piece of polystyrene for a channel for the waste and pipe. I cut this out carefully and behind the poly. Upstand there was moisture on the DPM. There was more than what the PIC shows(if I wiped my...
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    new isolation valve stuck

    Thanks I'll try 2mo. Can't believe it would be faulty. Makes sense it would have a depth stop.
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    new isolation valve stuck

    Hi plumbers, I've just installed a new compression ISO. Valve which hardly turns. Copper on one end and speedfit with a regular insert in the other. Is it possible the insert could be catching the ball inside? I've tried turning with grips holding the driver, still no go. Could remove the...
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    best way of compacting type 1 mot by hand..

    Sorry me again. I have a small area to compact.. 1.4m x 0.35 at 200mm. Could I use a concrete block (18kg) smashed down from 0.5m ? I'm thinking in 50mm layers, should I use some water to help bind it? The hardcore I have now seems to have more dust in than wickes' which didn't have enough...
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    covering gap.. pipe under lintel

    Hi, I have a soil pipe under a lintel. The regs. Say use rigid sheet plastic around the pipe to seal entry from vermin. Would PVC be ok..The white type used for roof fascia or even the hollow one used for the soffit area? 1. So it would be.. Expanding foam around the pipe through the cavity...
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    trimming concrete block to 40mm

    thanks guys, i went for cutting the blocks down.. crazy amount of dust. A really good fitting mask and/or anti fog glasses a must. i'll keep the brick and slips in mind. Will be renting a stihl saw for the cavity wall. fancied renting the allsaw but engineering bricks will be too hard i...
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    trimming concrete block to 40mm

    Thankyou tony, load of my mind
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    trimming concrete block to 40mm

    Hi all, our trenchfill foundations are set too high. Just confirming if i can cut a 7.3 dense concrete block-suitable for under dpc use, along the long side so I get a 40mm high block? (40x 440x 100) all other courses are eng. Bricks. This will help match the existing dpc level(6 courses 4...
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    Construction of bricking external doorway

    thanks skimmers, its not a cavity wall. Just a double brick wall. I will try to tie in the DPC to the existing if there isn't any under the door frame. I think the major point is that you have to match or better the existing wall/ insulation? Thanks for the hardwall and waterproofer tip.
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    Construction of bricking external doorway

    Hi guys after confirmation from council and asking on here a while back that i don't need planning, I'm ready to close an unused side door ~1m high and install a window in the remaining gap. Ill tie the block work into the existing with wall starters. The wall is double skinned brickwork...
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    minimum brick piller size - strengthening

    Thanks woody and for the effort you put in doing the sketch. The wall will be 300mm thick(cavity) and 300mm wide ending up a square pillar.
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    minimum brick piller size - strengthening

    Hi, I've submitted plans for an extension following some of the advice here, Small floor plan attached. Just thought about the strength of the inner leaf. I would prefer a straight wall inside the bathroom. But to achieve this the cavity wall near the door needs to be cut at the thickness of...
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