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I have a prehistoric Saunier Duval SD623 combi boiler that is leaking, but I can't afford to replace at the moment. The leaky part is on the air vent on the little tank near the pump. It is highlighted (box-in-box) in the picture. Elsewhere I read it is an easily replaceable bit of what may...

SD623 combi boiler guts

Hello - digging up an old thread as I have the same problem (leaky little black cap on top of the pump air vent). Can anyone tell me where I would go to buy one of these, and indeed what I would ask for? Yes, I know it is an outdated boiler, and it does ooze a bit elsewhere, but at the...

erm - what is the CU? Consumer Unit? Is this the main fuse board? What do you mean about 'different standards'? As far as I know, all the cable is the same.

Hmm - it is a dormer bungalow. But I don't think there are sufficient wires going down for the sockets too - just the lights and light switches. For the junctions, by 'accessible' do you mean exposed, or just can be got at through a join/cut in the insulation? Wires are flat grey with...

Have posted this over in the electrics forum, if anyone has anythind to add: //www.diynot.com/forums/electrics/wiring-safety-with-loft-insulation.294890/#2147371 Cheers

I've stripped out the wafer-thin insulation from my loft and am replacing with 70mm between joists then 200 mm over the top. Given the limited slack of my existing wires (and that I can't afford to rewire), I think running the wiring over the top of the insulation is not an option. There are...

Have been looking around, and I see plenty of cavity/acoustic insulation at 50 mm thick (e.g. Rockwool, costs around £2/m2 + vat). Anyone know if this would do the job I'm looking for, or is there some reason not to use batts for insulating the floor in a loft?

Hmm - I thought it was best to infill the gaps between joists, then lay crossways over the top. Surely if I just lay a 200mm layer over the joists, it will leave voids for convection currents to take my precious heat away? This is the reason I planned to do it myself rather than pay £100 for...

Am insulating loft (as cold loft), ripping out the old tissue-thin insulation first as it is full of mouse crap and rubbish. Am having problems finding suitable (and cheap) first-level insulation to go between the ceiling joists before rolling thicker stuff over the top. Two problems: -...