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Wow....thanks guys for all the suggestions. Regarding tiling, I'm using aquapanel all round in the shower area and 12.5 plasterboard elsewhere as in the main bathroom. The cabinet is being sited on the wall some 4 feet from the shower enclosure. This morning I managed to locate a very slim (11...

My 'just arrived' IP44 rated cabinet has a cable at the rear. The instructions show this cable being connected to the lighting cable feed by a simple 3 terminal screw block inside a wall void. There's very little space between the back of the cabinet and the wall; just about enough for a wall...

Thanks Nige. I also spoke with the guy at Osma who tells me that bosses between 10 & 2 o'clock is compliant.

I'm installing a shower room in a new extension that has a suspended floor over the 110mm soil pipe that's part of a single stack system which also serves a shower room with w/c macerator and bathroom with w/c upstairs to the open vented stack. Also, the stack takes discharge from two sinks on...

Many thanks TeaTime.....I've always tried to fit on the flow but, as I thought about it, I couldn't see why that should be so important.

From a practical perspective, on a new rad I'm installing, its easier for me to run the flow line to the TCV. Is there any reason why not? :?

Thanks spareshunter & BigSnoopy01 I'm going to fit below the joists as it's less effort and will retain the joist integrity. I'm now going to insulate with Water Bylaw 49 - 19mm walled on 22 & 25mm on the 15 pipe. I'll use the notching depth info for some pipe work I need to do in the...

I'm running 22 mm copper c/h piping across 45 x 175 mm joists at 400 mm centres. The joists are across a 3.2 m void. BC were OK with using 150 mm but, belt and braces suggested I use 175. The walls of the piping insulation are 13 mm thick. Given I have a little bit more joist depth than strictly...

Hi Guys I've also been checking the roof void in the main part of the house. This was re-slated at the time of the extension. The breathable membrane was fitted too tight by the builder, resulting in reduced ventilation with has caused condensation to form on the membrane's underside, water...

Sorry for not getting back sooner....problem with car was more pressing!! I'm still trying work out how to load pics. Meantime, on the basis that its condensation, I've been looking into the warm roof requirements. As the roofing spars are only 65mm deep, its not possible to friction-fix...

Sorry, haven't managed to conquer attaching pics yet and will be away for the next 7 days. Will try and attach them on my return. Thanks again for all your help in this troubling issue of ' have I got to reroof with new boards or do I need to insulate their undersides'?? :?

Sorry JohnD, I should have added that both the accommodation and garage areas are ventilated through plastic 10mm slotted under eave units set below the sarking board level along the full 30ft length on one side. Because the new build is set against 20ft the house, only 10ft of venting is on the...

The kitchen/breakfast room is 20 x 12 feet. In addition to the door sized opening to the new build, it has one door to the hallway + 1 4x4ft & 1 4x6ft windows + 7x7ft French doors to the garden. Only the French doors have vents. The hob is some 7ft from the curtained opening, which is some...

The area designated for the bathroom and bedroom is accessed directly from the kitchen. This new area is separated from the garage by a floor to roof apex 100mm thermoblock wall containing a fire door. Presently, the only constraint from the kitchen to the new accommodation area is a heavy...

Hi Guys.....would be grateful for any thoughts any of you might have on my 'Roof Sweat' question :?

Some 6 years ago, with me helping a time served builder, we attached a brick extension as a garage with separate accommodation for a bedroom and shower room. Overall, the build is 30 x 18 feet, with 50mm cavity insulation enclosed by 100mm grey insulation blocks. The garage has 75mm PIR covered...

Thanks for your quick answers guys.....and the caution on a live neutral! The house is 100 years old and, from the lack of any earths on the light circuit cables (since added) looks have first been rewired in the early 60's. I did wonder whether there was some cross feed, and have now...

In trying to meet current regs in installing lighting in a new shower room, I've fitted a 6a RCBO to the non-RCD side of my cu linking the upstairs lighting circuit. All seemed well until I switched on a 2 way landing light that's on the same non-RCD buzz bar: at which point the RCBO clicked off...

slippyr4's right....I don't really understand this TT/TN stuff. I'd be grateful if someone could clarify for me whether I need to fuse down to 5a for the shower room cabinet from the 6a lighting circuit. Thanks again everyone.

Thanks again for all your comments. As the CU has DP switches for the main and RDC sides, it seems my house is on the TT. I'd also be grateful for your clarification on the power supply to the illuminated/shaver cabinet. This is stated to require a supply at 5a, whereas the MCB (and a...