"Dave Plowman (News)" wrote:
Any of the modern alternatives better? Membrane or fibreglass? And a rough
idea of relative costs would be nice too.

What would the team suggest for a 20 year old felt/bitumen flat roof that
has a small leak, but has some degree of sagging which causes ponding -
possibly due to movement of the underlying structure rather than softness of
the roof itself?

I see there's the equivalent of floor levelling compound for flat roofs, but
is it any good, especially on top of existing bitumen? How does it manage
to achieve a fall, rather than being a horizontal level?

Have quotes 2-3K for a strip and redo, but wondering if there's anything
less drastic?

Thanks
Theo