Move up the lintel above the window

[P-O-]

We have an old house with a timber frame, and in the 60s a major renovation was done where the floor was lowered to achieve full ceiling height on the upper floor. Now, we want to install slightly taller windows like the house originally had. The problem is that a log has been placed directly above the current windows, and it's been propped up under the 3 floor joists. The plan is to support the floor joists with props and then remove the log, relocate it towards the floor joists, and place support under the log. Are there any risks with this that I haven't thought of?

 

[psjolin]

How much higher windows do you want to install?
Maybe it's possible to leave the beam in place and just "cut" so that the window fits?

 

[justusandersson]

The idea is to support the floor beams with props and then remove the log and move it up towards the floor beams and provide support under the log.
Are there any risks with this that I haven't considered?

Not if you replace the three posts (to the left, to the right, and in the middle) that the beam rests on.

 

[P-O-]

Not if you replace the three posts (to the left, to the right, and in the middle) that the beam rests on.

We were thinking of installing windows that are 2dm taller, I've considered replacing the posts but it's less work to splice the posts and screw them together with hole plates and angle irons up to the beam, the question is if that will be too weak?

 

[justusandersson]

In principle, it is not a good idea to splice posts. The posts' so-called buckling length is crucial for their load-bearing capacity. To calculate the loads, you need to know more about the house's dimensions and construction method.