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    Loft insulation - Can you mix types??

    Hi, I have a loft that is currently unboarded. The roof has been sprayed with a yellow 'foam' all over which I'm presuming acts as insulation - or is it designed to keep the roof in one piece??? Its 50's house so this could be the case. If it is there for insulation, should I also add...
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    Red screw cap on Pressure relief valve

    Er, dumb question coming up but here goes.. I have a, what I presume is a PRV, in the loft behind the tank with a red screw cap on top, which itself has a hole like the top of an aerosol. I assume this is a test cap? Can you just confirm that it should be done up hand tight. It doesn't...
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    Outside pipe to drain

    I have an external pipe which takes the soil pipes from the bathroom and shower room, combines them into this one pipe and then goes to the mains drainage. The pipe is below the window of the shower room, approx half way up the house. Currently just above the point where it joins both soil...
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    Potterton Profile 80e

    Hi Ok first post, so be gentle. I've had a good look through previous posts but not seen anything that helps my uneducated eye... I have the above boiler situated in the garage. It supplies 13 rads, normal domestic use. Bit of background first: I used to have an issue that it started...
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