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    Boiler overheats and cuts out?

    It's a Worcester Greenstar 30Si, ten years old, regularly and recently serviced. The fault only occurs in very cold weather, like now: First thing in the morning, the programmer's asking for heat, but the boiler's off. The radiators are cold, or slightly warm. If I run the hot tap, the water...
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    Maximising boiler efficiency?

    I had a couple of rads that weren't heating up, because of long bendy pipe runs in 10mm pipe. I've repiped them in more direct 15mm, and all seems well. I haven't balanced the system, because everything is already getting nice and warm, nice and quick. My concern now is to maximise the...
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    Leaking toilet flush mechanism?

    I’ve installed a couple of ultra-low-flush toilets – they work well and save, ball park figure, maybe a cubic metre of water a month. However once in a while they both fail to reseal properly after flushing, and leave water pouring down into the pan. It doesn’t happen often – maybe once every...
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    Thermostatic shower cartridge

    I have an (exposed) Bristan Artisan thermostatic shower, and I'm tired of replacing the cartridge, at about £50 a time, every couple of years or so. (I'm in Leeds, which doesn't have hard water, or suffer from kettle-furring etc.) I'm wondering if replacing the whole thing with a different make...
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    Laying linoleum on concrete…

    OK, I know laying linoleum is strongly disrecommended as a DIY job, but as a joiner I feel reasonably confident that I can make, and work from, a template accurately enough. The setting: tiny 200-year-old stone-built terrace cottage, renewing the kitchen. Two-foot thick walls, sound concrete...
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    Spurs off spurs and the real world

    I'm just looking at the (vintage 1973?) wiring in my partner's (tiny, one bedroom) old terrace cottage, and I found that the double socket in the kitchen that the kettle is plugged into is a spur. And running from it is a fused spur that supplies the oven. Definitely illegal, but I'm thinking...
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    Flushing half a radiator?

    I have a double rad where the front half heats up fine, but the back half only gets slightly warm. I'm wondering if there's a clever trick to dislodge whatever's causing this?
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    Reviving a thermostatic shower cartridge?

    I’m just renewing the cartridge on my thermostatic shower (Bristan Artisan). I seem to do this about every three years, and at £40+ a go, I’d rather not keep paying for new ones. I’m wondering what makes them fail: are they clogging up with scale? (I’m not in a hard water area, but do get a bit...
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