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Hi, warm roof = insulation on top of the rafters which is then tiled etc but it means raising the height of your roof by about 6in, not really feasible in a mid terrace house, and Planners are not keen. Cold roof = insulation between and under the rafters. Roof height stays the same and the...

Rafter and joist specification £60 +vat I will be asking SE for the spec The initial question was how to get past the purlins prior to their removal, without stripping the roof, this then led to a discussion about the difficulties in getting them to sit on the wall plate with very little wiggle...

The roof elevation concerned is a vaulted ceiling in master bedroom, staircase up to a gallery landing leading out to an inverted dormer/ roof terrace on the opposite side ... span from wall plate to ridge is about 5m

Got a point there, and it’s quite a shallow pitch so possibly less than a third will be actually sat on the plate. But if they can be stopped short of the plate anyway ....

200mm from one end would make life much easier! Thanks for that, will definitely speak to SE about it.

The whole job will be a pain, but so long as it’s possible without a full re roof, I was concentrating so much on getting past the purlins I never thought of having enough rotation to actually slide the rafters in. Really want to avoid a re roof, if poss

Architect said he has specified deeper rafters to go from wall plate to ridge beam without purlins, fitted from inside, without removing existing roof covering. Hence my post on here, how does anyone else do it without a full re-roof ?

Good question

Being done without stripping the roof

Architect is away for a week but will mention that to him if he seems in any way vague. I couldn’t think of any other way to do it, star at one end and work my way along, ensuring the remaining sections of purlins are supported until the last rafter is fixed in.

5k sounds a bit much for a Victorian terraced restate. However, as I understand it, and I’m no expert, if it’s a re-slate building control will want the insulation upgrading further, bitumen felt isn’t a problem provided there is a 50mm are gap between insulation and felt and slate vents, but if...

Our loft conversion is at the planning stage, architect has submitted the planning application, structural engineers are doing the calculations for building control. I will be doing most of the work myself and employing tradesmen as required. The architect has specified deeper rafters spiked...