ᐅ Increase the knee wall height from 62.5 cm to 75 cm.

Created on: 19 Jun 2015 11:48
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Häusle77
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Häusle77
19 Jun 2015 11:48
Hello,

by default, our general contractor builds with a knee wall of 62.5cm (25 inches) for a 45° gable roof.

Increasing it by one masonry unit to 75cm (30 inches) results in additional costs of €1,600.

Do you think the extra cost is justified by the additional usable space?
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radioactiveman
19 Jun 2015 11:54
So, how much additional floor space is actually gained? This is important for assessing whether it is reasonable...
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Legurit
19 Jun 2015 11:55
Sole plate height from the rough construction level or from the finished floor?
Try building it yourself: tape a cardboard piece at a 45° angle to the wall and see how it "feels." We did this for some detailed questions too – just built a cardboard structure. The kids loved it.
Alternatively, it’s interesting if you have furniture that is exactly 70 cm (28 inches) high or so.
Patchwork19 Jun 2015 14:30
A rough guideline is 1,000 euros per 10cm (4 inches). By reducing the roof pitch, you would save money again. I would rather go for a high knee wall over 1m (3 feet) and a flatter roof (35°) - but that is a matter of taste and is more common in the south where I live than in your northern area.
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Bauexperte
19 Jun 2015 14:54
Patchwork schrieb:
A rough estimate is 1,000 euros per 10cm (5 inches).

That is not generally correct; it depends on the external dimensions.

Regards, Bauexperte
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Häusle77
19 Jun 2015 15:27
The external dimensions are approximately 11m x 9m (36ft x 30ft), the house will have a brick veneer, and the maximum eaves height is 4m (13ft).

A taller knee wall is therefore hardly possible.

Unfortunately, I do not have a calculation of the living area, only of the floor area with the adjusted lines for 1m (3ft) and 2m (6ft) in the attic.