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I have four outside lights to install off an existing lighting circuit (ceiling rose). All cable can run inside the house, just passing through the wall where they need too. I want to run all four off a single light switch. Could somebody please explain the best way to wire these up? I...

I've recently opened up an existing external door way into a side extension (its gone from approx 800 to 1200mm wide). Having looked into the cavity I can see very few wall ties and have noted a slight bowing in the external leaf, which also exists within the wall away from new opening. This...

Hi, I have a existing flat roof with a now redundant 4'' flue hole/18'' square flashing plate. I've temporarily sealed the hole/plate but I now need a more permanent solution. The existing felt system appears to be in a reasonable condition (it's around 8 years old) and has been painted...

Its probably a daft question but is there any benifit in squeezing more rolled mineral wool insulation in to a limited void than just filling the same with non compressed/fully expanded stuff? I'm guessing the loss of air/voids within the wool will reduce its's thermal resistance but any...

Hi, I'm in the process of converting my garage and am at the point of insulating and the electrical first fix. The ceiling is to be insulated with PUR board within and below the rafters and the floor is to be a floating PUR and chip board affair. As both the the floor and ceiling are to be...

Is correct to drop a new vertical soil stack into the top of an existing drain using a 45 degree equal branch?

Hi, I'm considering converting an existing garage/utility into living space and am unsure on the best way of insulating the existing cold flat roof. The joists are 8" deep and it's currently ventilated via the open cavity. Should I either:- a) completely fill the void between the joists with...