ᐅ Roof Pitch & Knee Wall Height, Recommendations?

Created on: 4 May 2016 11:40
W
Waldifix
Hello everyone,

I now need to decide on a roof pitch and knee wall height and wanted to ask for your recommendations, especially whether the additional costs are really worth it. What should I consider when choosing the roof pitch?

It is a gable roof.

150 sqm (1,615 sq ft) house, 1.5 storeys

Knee wall 1.00 m (3.3 ft) instead of the standard 0.75 m (2.5 ft): €4,005

Knee wall 1.20 m (4.0 ft) instead of the standard 0.75 m (2.5 ft): €6,320

Knee wall 1.50 m (5.0 ft) instead of the standard 0.75 m (2.5 ft): €9,805


127.4 sqm (1,371 sq ft) house, 1.5 storeys

Knee wall 1.00 m (3.3 ft) instead of the standard 0.75 m (2.5 ft): €3,775

Knee wall 1.20 m (4.0 ft) instead of the standard 0.75 m (2.5 ft): €5,915

Knee wall 1.50 m (5.0 ft) instead of the standard 0.75 m (2.5 ft): €9,125

Knee wall 1.00 m (3.3 ft) instead of the standard 0.75 m (2.5 ft), with a simultaneous change of the roof pitch to 38° (instead of the standard 40°) costs only €3,000
Musketier4 May 2016 15:06
However, it should also be considered that roof windows will be positioned quite high with a knee wall of 1.5 meters (5 feet), making cleaning, opening, and looking outside more difficult. While additional windows can be installed below the knee wall, this will increase the overall cost.
P
Payday
4 May 2016 15:45
That is correct and important. However, it only becomes relevant for large houses, when a third room is added between the two straight walls (or if two windows are desired in one room). It might also need to be considered for a window at the staircase in the middle.