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I am insulating the walls and ceiling of a 6m x 3m breezeblock construction outbuilding for my father in law in Scotland that has a flat roof with previously no insulation and no soffits. The roof just covers the width if the walls with no overhang. It has double glazed windows and door. We...

1st valve lasted 7 or 8 years. Second one 2 years. Now another one on a different zone is opening but not sending a live switch signal out. Worked around it by sending the thermostat -on live signal to the boiler so dont need valve microswitchbto work. Any advice on getting valves to last...

hi I have a leaking isolation ball valve on a feed to a radiator. it has been in for a year with no problems but when I switched it off to change the radiator it leaked where the screw bit is. I am going to replace it but I wondered if the problem was maybe I had on the wrong way wrt water...

Hi I am putting in a new hearth over an old concrete slab floor. The rest of the floor will be as follows (top down); flooring screed (with UFH) 75mm insulation 60mm DPM (1200 gauge visqueen) Old Concrete Slab When it comes to the hearth I know that I need to have a constructional...

hi I am fininshing off an extension joining onto an existing older building. The extension is yanked and the architect has spec'd Marley Dampseal for the dpm which will sit under 60mm of Kingspan and 75 mm of screed. A laminate wll be glued onto that. He has als psec'd marley dampseal ontop...

hi I have put up a cold unvented unsarked roof in scotland ie no boarding or sheeting but battens and counter battens over breathable membrane. The slaters who have looked at it up here all complain cos they say it is much harder roof to work on as they cant drive their supports for planks...

hi advice appreciated on this. I am putting up a cold non vented roof in scotland (because I have an english architect!!) and noone is used to this type of roof up here cos in scotland roofs tended to have sarking board on . anyhow. when you cover a roof with breathable membrane I...

hi got a designer towel radiator from eBay which was very cheap. they said upfront that it was from a job lot of seconds some of which were rusty. the outside is fine ( it looks fab) but there is rust flakes and dust inside the radiator and the thread for the valves seems a bit dodgy...