On 15/08/2012 15:15, gogmagog wrote:
My mum n dad have a garage attached to their house. It's rather long, since
the guy who built it (previous owner did it himself, we're told) also
extended the kitchen sideways at the same time. So, it's the same length as
the house (25 feet or so). Neighbour says he used pretty much any bits of
chipboard he could find. There seems to be no incline, since water tends to
sit it pools on top. It has a few leaks, and has once caused water to pour
out of a light switch in the kitchen. I patched that one up, but we're
thinking it would be nice to do something so that we can just forget about
it in future. Having it properly replaced is out of the question - the
money will never be available in their lifetimes. I was wondering if I
could cover it all up with some corrugated sheets, making sure they slope
down to the back, where there is already a gutter. Is this a reasonable
thing to do, or just plain bonkers?

To cover all the bases. I have two flat roofs that I have fibreglassed
(I did want to use EPDM on one, but it is an odd shape and would have
been difficult to do) and I covered my garage roof with galvanised steel
roofing sheets. I went directly to a company making the sheets and they
rolled them from a coil and cut them exactly to the length I required
(12' 3") while I watched - that meant they could run from one side of my
garage to the other with no joints.

My first fibreglassed roof is okay 13 or 14 years on, the second is only
12 months old and the galvanised sheets look like new 5 years on.

SteveW