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All fixed now! Transco came within an hour of phoning them - they treat it as an emergency apparently - and it was the regulator! Thanks all for your help!

Sounds like you might be onto something Garfeild - it's a Donkin and looking at the model number with a torch and mirror it looks like 225/2 - are they as bad as 225/5's?

Hi, I've recently noticed that when our boiler (Potterton Profile) starts up, the gas pressure to the cooker and hob drops significantly. I'm sure it didn't used to do that. Could it be that the pressure of the supply coming into the house is low or might there be a fault in our system...

I think adding extra firrings would be too much work now. It might be possible to jack up the whole structure and fit an extra length of 50mmx50mm beneath the back wall plate, but that wouldn't be ideal because it would create a triangular gap down the sides (which I could fill with a couple of...

I've checked again over the whole area and the only place where it's dead flat is towards the back right corner. The gutter will be at the front. However the angle of the slope does vary over the rest of the roof and is pretty small in some places - the firrings weren't cut very well so that's...

Hi, Back in Jan you guys gave me some very helpful info on replacing a flat roof on a free-standing 6m x 3m garden room. Well, four months on I'm finally fixing the deck and hope to finish the whole thing this week...weather permitting. Anyway, to provide the slope I used 50mm to 0mm...

Just wanted to thank you Masona and Johndug for your help - things are a lot clearer now. I'll post again if I get stuck! Cheers, Bob.

Couldn't the Wickes system be used on a low pitch roof too? I guess its main advantage is that it's self-adhesive.

Thanks - it's all starting to become a bit clearer. I still have a couple of questions though: How long are firring strips? Presumably they need to be as long as the joists or there will be gaps between the joists and the plywood? Or am I missing something? Is there any advantage to...

Thanks for the info Johndug - that's very helpful. I have to admit I'm not totally clear how to handle the bit where the roof timbers join the walls, and it's rather difficult to explain without drawing diagrams! Do the 4x2's sit on top of the concrete blocks and extend beyond the walls or...

Thanks for the reply. No photos at the moment although I could take some tomorrow and post them if that would be useful. It's actually a completely free-standing building, about 5m x 3m. The front (one of the 5m sides) has double doors in the middle with windows on each side of the doors...

My Dad has a 40 year old free-standing Banbury sun room in his garden with a sagging and leaking flat roof. The roofing structure is built correctly according to the original plans but the design looks completely inadequate and I'm amazed it's stayed up as long as it has. I'm intending to...