ᐅ Ideal Knee Wall Height for a Gable Roof

Hello,
I’m not sure if this exists. The question is, what are your ideas? How high should a knee wall be at minimum? We are currently planning with a 1m (3.3 ft) knee wall and a 45-degree gable roof. Of course, I can raise it, but it’s always a matter of cost. How high should the knee wall be nowadays so that the rooms on the upper floor can be used effectively?

Thanks in advance for your tips.

Everyone prefers what they like best – we have a 1.25m (4 ft) knee wall and a 35° roof pitch. That means we don’t have a practically usable attic space... but with a basement, that’s not an issue. Without a basement, I would have never done it...

With a one-meter (3 ft 3 in) knee wall, for example, our (new) bed wouldn’t fit underneath, so you lose space in the bedroom.

We have 2 full stories, and the roof structure is built on top of the upper floor ceiling with a 35-degree pitch. This results in sloped ceilings throughout the studio upstairs, where we have marked the height at approximately 0.8 m (31.5 inches).

We have 1.6 m (5.2 feet) at a 45° angle – and that is only because we had to build a single-story house. If you are allowed to build two stories, go for it; the costs are not that exorbitant, and you have the opportunity to optimally illuminate all rooms.

@BeHaElJa:

Do you have a view or elevation of your house? I'm finding the knee wall and the pitch a bit unusual—just curious!

I can gladly post it this evening. On one side, we raised the roof to a standard height; part of it forms a porch roof, and part of the living room has been extended (4.8 meters (16 feet) wide bay window). On the other side, there is an 80 cm (31.5 inches) roof overhang.