How's this quote for a dormer re-roof?

These days sounds pretty cheap, it can cost that much for a bodged up garden fence these days. Brian

Seems high. In 2012 I got about 30m2 of dormers redecked with new OSB, felted plus 50mm of celotex installed for £1800+VAT.

The scaffold was already there for the main roof retiling.

Also, I question the need for scaffold there - it's such a tiny area and it's what, 4m off the ground?

As for sloping back, why not? Mine has front guttering that simply goes around the side and drops onto the main tiles to run into the main guttering. As long as the read flashing is built with that in mind, it seems OK.

The forwardslope will only be slight, better and normal these days. Probably a gutter will be needed £1200 seems reasonable to me. Watch out for the fine print. It may need more work when the existing roofing is removed, in fact, almost certain to. Rot etc. What about the internal "ceiling" to the dormer, any traces of damp/rot?

In message , Lobster writes

I really know nothing about these things, but we have a much larger back-tilting dormer roof. We consulted a surveyor, who advised that changing the tilt would involve quite a bit of additional work at the main roof interface and advised against it. We had occasional water ingress from the "gutter" along the back of the roof and he agreed with me that the way to deal with that was to take the dormer roof covering much further back under the main roof and form an upstand as a sort of dam. We presumed that in storm conditions waves sometimes formed in the rain on the dormer and had been blowing up and under the main roof.

Coincidentally, today as we drove in my wife remarked that the re-roofing of the dormer all those years ago had worked well.

I wouldn't baulk at that if I thought it was going to be done well. Although I think I'd expect to be able to do it from a (professional sized, i.e. 8x4) scaffold tower. You'd want to be sure they spent time getting the rear "gutter" done well, removing existing tiles etc. They might not have offered a breakdown if they have a standard formula with a price per unit area that they find covers labour and materials. Not unreasonable to ask how long they think it will take but you can't blame them for being coy about their business model.

Is it just the roof that is dodgy, or might they have to do some reconstruction of the sides, window frame, etc?