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I have a Reliance Thermoguard UFH blending valve. Flow and return connections on the valve are 3/4" BSP F and boiler pipework is 22mm copper. I am using a bog standard brass 22mm compression to 3/4" BSP M coupler to join the pipework to the blending valve. Unsurprising to me, the BSP threads...

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...

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...

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...

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...

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.

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

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...

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...

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...

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...