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Hi everyone I’ve built my own large extension and, at the start of the project, about four years ago, I had a Part P sparky mate who agreed with me that if I do the first and second fix electrics up to standard, then he would test and sign it off. Well four years later I’ve finished the...

My local merchants both don’t stock square edged moisture resistant boards, only tapered. One commented that if you want the square edge you could flip them over, but this requires both faces to be the same no? My intention was to use the boards for my bathroom ceiling and skim over the lot...

Hi can someone offer some guidance as the best lapping arrangements for this Ubbink OFT/5 flat roof terminal? Does the included “skirt” stick to the EPDM via contact adhesive and left exposed or does it end up below a layer of the elastiform type tape like in the second image? Does the...

Hi Is there any way to temporarily close an auto bypass valve like the one shown in the attached picture? Please don’t ask why, there’s a good reason! I just need to stop the flow through it without altering the pipework connected to it, wasnt sure if you could take the head apart or...

is there anything stopping draining a combi boiler down using the flow pipe as opposed to the more commonly used return? For example, an automatic valve within the boiler housing itself that closes the flow when there is no CH demand, so the water between the valve and the return inlet would...

On the side without the gauge, what is the slotted head for? It looks like a slightly larger version of the slotted head on those naughty iso valves, but I assume it isn’t to open and close this valve given there is a black handle right next to it? Thanks for any help

Hi I’m installing a new combi boiler with new flow and return as part of an extension, and this will feed the existing flow and return in the existing house, and then go on to feed new radiators in the extension. I’m doing it all in copper with regular end feed fittings. My question is, what...

Hi In terms of both regs and from a plumbers’ perspective, is there anywhere I should add a non return valve or check / double check valve in a combi setup? I’ve looked into it a bit, and I see the technical difference between a NRV and single / double check valve but I’m still not sure where...

…from stopcock, rather than using a more convenient 15mm close by that already serves various taps and appliances. The 15mm has a flow rate of 15l per minute without other taps and appliances running. Boiler is a 32kw intergas rapid. Thanks!

Hello! Could any of you helpful people point me in the direction of a layout plan/diagram or similar for a combi boiler with the bells and whistles? I’m not trade and really looking forward to putting together a lovely setup (visually as well as correctly arranged in the eyes of a plumber)...

Hi Can anyone confirm my assertion that the detail shown here from NHBC is not actually achievable? How can one have the brickwork finish level with the top of the joists, so that the OSB deck and insulation can sail across the cavity, and deck sit on the brick wall, when firring strips need...

Cheap Combi boiler (Intergas Rapid 32, £700) Shower and Bath (used different times) fed direct from DHW side of combi small unvented cylinder (less space, less stored heat wastage) on central heating side of combi, Zone 1, feeds all sink / basin taps Rads on Zone 2. No electric shower No...

Hi I really hope my diagrams suffice here... I’m building an extension to my standard 1970s semi detached property. The extension is to the side of the existing and follows the profile that is already there; ie the roofs will flow across. There is already an extension to the rear and that...

Is it normal / acceptable to place the RSJ holding the upper wall (in the diagram) above the upper floor space rather than within it? So the steel would be at skirting board level, with the other side of the steel in the canopy space. And the wall sat on top of it would be shorter as the steel...

Hi I’m building a pier that is 440mm wide, between a new garage door and the existing house. Brick skin and aircrete skin, tied together. Because of the width, and there are no corners / returns, I don’t actually need a bond as such on the blocks, I could just stack one on top of the other...

Is it usual to prop up brickwork when putting a hole in for padstone and steel end? The wall is the existing external leaf of a 1970s property, 65mm bricks, 100mm cavity. the padstone is 440x215 and the room required to get the end of the steel in is about the same, so the hole would be...