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I've cut and pitched a vaulted roof designed by others and the building inspector has queried the absence of diagonal bracing. The rafters are 225 x 50 at 600 centres with a 300 x 100 glulam at the ridge and birdsmouthed at the plate utilising slider shoes. On top of the rafters are 11mm thick...

In section it would be the same shape roughly as a stanley blade. In other words 45 degree pitch up to a flat roof at the top. Need this kind of shape in order to get under first floor windows. Thanks David

Anyone changed one? Feeling particularly cowardly as I've had a bad week. Pin hole in the plastic manifold on a greenstar junior. It looks by the number of o rings and washers in the kit that the whole hydraulic block may have to come out unless someone knows different. Any tips/advice...

Apologies for the appalling sketch but my 4 year old is out playing so I'm unsupervised. Does it matter where the DPC on the outer leaf of a cavity wall goes? I know it's usual to keep it level with the one on the inside and have any hard landscaping 150 mm below but I'd like to have the...

Engineered joists have been calculated for use on the extension we're building but having seen an example of them I'm not so keen. How do I stand if I want to change them for C16 timber as far as building control are concerned? Will they require us to submit more calculations with regard to...

I seriously doubt wether these are needed at all but we've got them now so we just as well use them. They are very heavy and I'm after some advice on how to brace them into position so you can build them in. There are four of them all bolted down to the concrete and concealed in the cavity...

Would changing the finish on an extension, to be started shortly, constitute a material or non-material amendment? For example changing from render to face brickwork. It's just that I was expecting to be able to use blocks under the render but the SE has specified brick. No doubt there's a...

Hoping for a bit of advice regarding the following. I have planning permission to extend my home and the single storey side extension will end up within 2m of the neighbours extended side elevation. He's in the property game himself and has told me that the depth of his foundations on...

I have this combi boiler which has developed a fault on the central heating side. It fires up but fails to remain alight long enough to satisfy the heating demand. After looking at the manufacterers fault finding flow chart I thought I had spotted the problem and suspected the central heating...