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I am fitting a 15mm x 3/4'' Compression Female Iron Coupling adapter: The 15mm compression end is easy, but what's the best practice for fitting the 3/4" female-to-male thread? There is no compression feature, just interlocking threads. Should I use a 3/4" washer? Just wrap with a lot of...

I have some of this tape left over and want to use it on a drinking water pipe: It only says "for all common gases and liquids" but not explicitly "for potable water" as the usual white stuff does. Is it safe? Just trying to save myself a trip to the shop!

I have a brick wall that I intend to install a bath against with a fixed shower head: I'll use either tile backer board (insulation + cement layer) or hardibacker with a tanking kit; attaching via dot and dab (plasterboard adhesive) and screws + washers to hold it in. However, what's the...

I'm building some fitted wardrobes out of MDF. Would you recommend a 6mm or 12mm back panel for each unit? I'd prefer 6mm to save on space and cost but wondering if that would cause any issues. It's going up against a stud wall if that makes any difference. First time builder so thanks for...

I painted some doors in Dulux Quick Dry Satinwood (water based) about 12 months ago. Prepped well (sanding, primer, etc) and they came up really nice. I did 1 coat acrylic primer, 2 coats top. Since then we had some unexpected building work done, and they are all dirty enough to require...

I have a new house and realise there is a socket on the ring to the boiler (20A). Is this a problem / do I need to have it moved to a 16A fuse?

I want to put underfloor heating in a small ensuite (just 3.5 sqm). Having researched options (electric vs. wet), I found what seems like a good solution in using an RTL valve (return temperature limiter; https://www.floorheating-direct.co.uk/product/rtl-valve/). This solution just connects...

I have installed a run of 5m LED strip lighting, rated at 24w (300 x SMD 3528 leds for those interested). However, I realise I made a mistake and connected it to a 12V DC transformer rated at 12W. The lights are in the kitchen and have worked fine without any noticeable problems. What risks...

I am researching putting a non-load bearing partition stud wall in a loft space (pitched roof construction). I have read that if I were to specify a gypframe studwall then a deflection head is required (http://www.british-gypsum.com/technical-advice/faqs/020-what-is-a-deflection-head). However...

I am building a cabinet (basic MDF stuff), what clearance/spacing would you recommend for the doors on the top, bottom and sides? Is 2mm all around enough or do people normally give a bit more room?

I have a cold loft in a pitched roof. Insulation is over the ceiling not under the rafters. I want to put 9mm plasterboard up under the rafters for aesthetics, I won't insulate between the rafters (100mm deep) as there is already insulation over the ceiling joists. If I do this, do I risk...

I've just had my flueless gas fire replaced by a gas safe engineer. However I forgot to ask for the certificate - what specifically should I be asking for when I ring them? Reading here...

I have a void I want to fill with no-nonsense fire rated expanding foam. I filled it per the instructions but went a bit overboard and used too much. I shaved off the excess against the wall with a knife, however the "middle" of the foam is still gelatinous after 12 hours. My guess is no air...

I have a bathroom that's being renovated. We've contracted a plumber to install a new shower, and they have embedded the shower valve in a solid brick wall, screwing it into the back of a chase and filling with cement so just the shower valves are visible. From my reading this is against...

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