02/18/2026
I've just finished framing a window in a garden room, seeing it in place I think it might be a bit too high. How do I go about lowering it? I added this window frame to an existing wall today. Pretty much nothing is level but it should be fine! The height looked and felt good when I marked it out, but seeing it in place now I think it might be too high. I'm planning on having a desk in front/beside it.
The top of the window was set to be the same height as the planned sliding door (2100mm). The window opening is 1400 x 1100 which has the sill sitting 1000m from the floor.
The standard desk height seems to be around 760mm, so a good height for a window behind a desk seems to be around 800mm.
I haven't ordered the window yet so my options look to be.
Drop the window 200mm - but I'm not sure how to properly drop the height at the top beneath the header. Also will this look odd if the top of the window isn't in line with the door (to be on the wall to the left).
Order the window 1400 x 1300 and drop the sill by 200 - more expensive and the window might look enormous.
For option 1, what is the proper way to frame it to lower drop the height?