Window frame for workshop

[MrD]

Hi,

I am just about to start making some simple window frames for my new workshop.

I have 2 double glazing units that measure 51cm by 99.5cm.

The frame I am making from Kiln dried oak I got cheap from ebay. The windows will not open.

My question is how much larger should the inside of the frame be compared to the glass? I thought 5mm in both directions but I am not sure - that would give 2.5mm all round clearance.

Any help would be greatly appreciated.

Thanks
Mr D

 

[Dibs-h]

You mean opening?

I've always measured the opeing and deducted 6mm from both measurements. So in your case make the opeing 6mm bigger both ways if that makes sense.

Dibs

 

[MrD]

Hi Dibs,

Sorry for the confusion - yes I meant the opening. 6mm it is then.

Thanks!