Any Window Fitters In ?

[V8RX7]

Hi,

New build house and I'm fitting my own windows (for the first time)

My current house is next door - late 40's house with replacement UPVC fitted.

1) On my old house the standard windows are fitted approx 30mm inwards of the brickwork - is this a normal amount - I'd have guessed 10-15mm would be usual.

2) Bay windows - on my current house they have been set flush to the external brickwork (with great big knock on strips too) - is this usual ?
I thought I'd set them inward a bit to make a better silicon edge rather than a flush one - BUT I suspect this means that if anything is out they'll be a nightmare to fit.

3) I've got to give the manufacturer the sizes I'm thinking -15mm off the opening size - correct ?

Thanks

[Spudler]

Some fit flush from the back of the brick hence your 30mm, assuming 70mm profile.
The profile should bridge the DPC, 10mm or so and that will still leave enough brickwork to fix to.
Eta 10mm is ample to take of brickwork opening.

Edited by Spudler on Thursday 11th October 15:17

[V8RX7]

Spudler said:

Some fit flush from the back of the brick hence your 30mm, assuming 70mm profile.

The profile should bridge the DPC, 10mm or so and that will still leave enough brickwork to fix to.

Yes 70mm - so that makes sense.

Sorry are you saying the frame should sit INTO the cavity by 10mm, hence sitting inward 40mm of the brickwork ?

[Spudler]

Sorry didn't word that very well.
Measure your brickwork opening, making sure you take the narrowest point,
and deduct 10mm off that.
That will give you a 5mm tolerance either side of frame for packing.
Personally I fit the frame overhanging the back of the brick by about 10mm
which will overlap the vertical DPC. This stops any chance off moisture coming
into contact with plasterboard, render & set or whatever the finish will be.
You can sit the frames back further still if you like the look, just remember to order
deeper cills.

[V8RX7]

Thanks.

Final question - Bay windows should the outside of the bay frame be flush with the outside of the brickwork or do you sit them inward too ?

All the measuring guides I've seen say to measure your existing windows - I don't have any.

[Spudler]

No real hard & fast rule regarding bay windows.
Best speak to your window suppliers re styles etc and bearing in mind any openers adjacent to the brickwork
will need enough clearance to open.