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I've got a 200 year old cottage down in rural France, the external walls being solid granite 1m thick in places. As I've been doing it up I took the decision to dry line and insulate all of the internal surfaces of the external walls (the temperature regularly drops to -15 in the winter and...

I've got a Glow worm 30si system boiler which has been in for 5 years or so. I've had a recent issue that seems to be pointing to the expansion vessel but need to get some expert opinion. The boiler is failing on low water pressure each time it cools back after a run. I can pressurise the...

I have a Thermostatic mixer fitted in my shower downstairs which has always worked well since fitting about 2 years ago; however over time the need to adjust towards the hot water side has increased gradually meaning that now in order to have a warm shower the mixer has to be turned up to the...