On Jul 21, 10:50*am, "GB" wrote:
Dave Plowman (News) wrote:
In article ,
* harryagain wrote:
But flat roofs are bad news, you're right.

They are, of course, sometimes unavoidable. Properly done, they are
not such bad news as most say.

Thanks all. The two I am thinking about are an extension roof done around 60
years ago and a garage roof done around 50 years ago. Maybe things were
different then, or maybe they were just done badly, but they both pond.

Firring stips already mentioned. The other way is to add an extra row
of bricks along the back. Now if you want a long lasting flattish
roof, add 3 or 4 rows of bricks, use asbestos replacement flat sheet
to roof it, then add roof tiles on top. That really lasts.


NT