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I'm building an extension, and I need to trim some rafters that come down to a wallplate at head height, as there's a door going in. If I double up the rafters either side, do I need to double up the whole length to the ridge? Or can I stop at a purlin above where I'll cut the rafters?

Hi, I'm building a timber frame, timber clad extension. I'm fitting painted timber windows, and am rather confused about the detailing around the window. Everything I can find mentions preformed flashings at the head. Does anyone know where I can get these, and what they're called...

Hi, I'm building an extension (I'm not a builder, but I've renovated a few houses and can do most things!), and want some advice on underpinning. The project involves knocking down some of an existing single storey extension to the house, and building a 2 storey timber frame extension. It...

I'm fitting heating upstairs in our house, and I came across something saying that BR Part L requires separate zoning for sleeping areas. I've taken a look at part L, and can't see it mentioned anywhere. I was planning on fitting three radiators in the three bedrooms, each with a TRV. But...

In short... we've bought a new house and are in the process of renovating/extending it, and need to make some changes to the central heating (install radiators upstairs, and move/upgrade the hot water cylinder, relocate header tank as it's on the same level as upstairs radiators...). Now, I...

I'm currently installing a new kitchen. There is a boiler in the kitchen, and we're having a gas cooker installed. Now, regarding ventilation, the manual just says: "If there are any other fuel burning appliances in the same room the current edition of BS 5440: Part 2: should be consulted to...