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    Uneven beam and block floor - DPM/Insulation/screed

    I'm about to lay DPM, 100mm insulation and 55mm of liquid screed, on top of my beam and block floor. In some places, the beams are slightly taller than the blocks, by maybe up to 10mm. Note sure if the blocks were a bit under size, or the beams over size. My concern, is that the insulation...
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    Paving mortar dilemma

    OK sharp it is. Thanks all for the input
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    Paving mortar dilemma

    Not really fussed about pointing. Probably a bog standard grey mortar to contrast the slabs. Just dont want my white slabs to develop a yellow tinge
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    Paving mortar dilemma

    Nope
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    Paving mortar dilemma

    I need to lay some white mint indian sandstone. They are really light in colour, almost white, and I am concerned that over time the yellow from the sand will leach through and stain the slabs. I intend to prime the back with a slurry of snowcrete and SBR, which should help I guess. I have a...
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    Cutting down indian sandstone pavers

    Thanks. I decided to go and buy one to find out. 4" battery angle grinder with a diamond disc goes through them like a knife through butter (compared to a concrete roof tile, which is hard work). Cut halfway through, then snap them. Fettle the straight edges with a hammer.
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    Cutting down indian sandstone pavers

    I'm just about start paving in the back garden with indian sandstone. The areas I need to pave are quite small. I want to use a mixture of sizes. Typically, these are available in packs comprising 900 x 600 600 x 600 600 x 290 290 x 290 The 900 x 600 just doesn't work with the layout and...
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    Party wall act, retaining wall (very) near boundary

    I'm planning on building a 0.8m high retaining wall 100mm back from my boundary. I am going to take the fence down first (which is mine), and replace it after the wall is done. I'll bolt the fence posts to the wall. If I didnt take the fence down, they wouldn't know it was there. I don't...
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    Closing gable cavity

    What are the options for closing the cavity on a gable end wall? The drawings I have say 6mm masterboard. I need to bed the verge tiles, can it double as the undercloak? Cheers.
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    Cavity trays over lintels

    Is it necessary to install a cavity tray over a lintel which is just below the eaves? There will be eaves protector, so I cant really see the point personally. Thanks
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    Concrete lintel at finished ground level

    It seems a bit overkill, but its next to a 3m opening so is bearing the load from the lintel above that which has the roof sitting on it. a 65 will still be visible and probably not quite strong enough. Most of the load is on the inner leaf though, so maybe.
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    Concrete lintel at finished ground level

    I need a lintel over a drain, 2 courses below DPC, which is visible. The architect specified a 140mm high strength concrete lintel. I don't want to be able to see it. I can't bury it. Can I use a steel lintel? Corrosion is a bit of a concern to me below the DPC, at the bottom of the cavity. I...
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    Screed, reinforcing and underfloor heating

    It is a beam and block floor. The manhole invert is really high, so to get the levels we will run the soil pipe from a new WC in a trench constructed with more floor beams, just below the level of the floor. Effectively, we are stacking beams so that we have two levels. The trench is only 215...
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    Screed, reinforcing and underfloor heating

    I'm planning on installing underfloor heating in my 75mm sand cement screed. The architect stated A98 mesh (5mm wire on 200mm grid) in the screed because drains are running under the insulation. Could I use D49 instead (2.5mm wire on 100mm grid), which works better for pipe spacing. Perhaps run...
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    Removing brickwork below DPC for lintel

    I need to install a pair of 100 x 215 lintels below DPC, that will be supported at one end by the existing brickwork and a new 4" wall coming up from the toe of the existing footing. I plan to install a padstone that sits half on the existing brickwork and half on the new 4" block wall. So I...
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    Shallow drainage floor slab design

    Cheers for the responses guys
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    Shallow drainage floor slab design

    I am building an extension. The crown of the existing foul drainage exits the existing wall 225 below DPC and enter the manhole 295 below DPC. I need to change the floor slab to accommodate. I think I want to propose the floor construction to be: 45mm bonded screed 100mm concrete 80mm...
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