"Phil" wrote in message
...
On 9 Mar, 09:23, "David WE Roberts"
wrote:
please refer to OP

I ,too, used B&Q windows in a single skin garage/workshop.
You can make window 'openings' any size you like by varying mortar
gaps or cutting blocks. To suggest you could achieve an accuracy of
2.5 mm is fanciful.
The fixing clips can face fwd or back - I fitted mine with the windows
flush outside, clips to rear. They JUST fit in the 100mm (plus
external render).
Squirty foam, not foam rubber.
No need for trickle vents where the opening window can be locked
slightly open. No need at all in a non habitable building (presumeably
no airtightness).
Sill screws to window frame - I had to find some better screws....

Phil.

Usefull as always (thanks to Dave as well)

Varying mortar gaps may not be the way to go, because in this case gaining
5mm on two gaps may be a little extreme.
As is cuttting 5mm off a concrete block :-(

The front should look like this, corner to cent

Block 4 block gap for door Block 2 block gap for window 5/8 block ||
centre

Other side is a mirror image.
So there aren't many mortar gaps beween the two windows and between the door
and the window.
Probably the column between the two windows will not follow the bond of the
rest of the wall.
As I am cutting these blocks anyway I can trim them to fit.

I was really mainly querying why (oh why, oh why) the window was made in a
size 5mm too wide to fit a multiple of blocks (and therefore a multiple of
bricks) without cutting.
It just doesn't seem logical.
Unless this is just coincidence and they aren't designed in multiple brick
widths.

Oh, and I don't have any external render (which means they might JUST not
fit).
Did you use both screw holes in the plastic bracket or just the one nearest
to the frame?
Did you angle the hole in 60 degrees as in the instructions for fitting the
bracket outside?

TIA

Dave R