In the 60s and 70s, it was common to build houses with 900mm wide modules. In the living room, I have 900mm wide window sections where you can see that the side pieces of the window go all the way down to the sill and all the way up to the wall plate, i.e., these windows are load-bearing. Now I wonder what is right or wrong if you want to replace these windows.

1. Prop up, saw off the side pieces, and insert a new fixed window, and wedge/support it to make the new window load-bearing?

2. Remove the sashes, unscrew the hinges/fittings, and install a new window frame in the existing frame and thus retain the old load-bearing frames? Then install slightly wider cover strips/moldings between the windows.

I would prefer to do option 1, but if that is completely wrong, I will naturally go with option 2.

Anyone knowledgeable with viewpoints?

Ps. I know the question is about windows, but also about construction techniques, which is why I asked in this forum. Ds.
 
Both of your proposals CAN be implemented. However, getting the load-bearing to be correct with option 1 is not quite so simple.
The principle is normally that you do NOT make window and door frames load-bearing.

My suggestion is that you go with option 2!
 
Ok....thanks for the answer. I understand that option 2 is best in terms of load-bearing, but option is better aesthetically, so I think it will probably be option 2. Anyone else with another viewpoint??
 
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