In article ,
fred wrote:
Interesting. The rather limited instructions with the windows caution
against using mortar because of expansion of the frame - it's UPVC.

Ok, so how about 2mm thick of frame sealant applied in the same way,
it'll get a nice key of the open cell foam.

Thing is the bricks aren't that even down the side, and anything non
mortar coloured would look rather tatty. I should really have rendered the
inside of the reveal before installing it, but hindsight is a wonderful
thing.

--
*If a thing is worth doing, wouldn't it have been done already?

Dave Plowman London SW 12
RIP Acorn