11ant
2018-07-02 15:40:18
- #1
; are you familiar with the permissible tolerances for windows?
Tolerances is the wrong word here: there are installation clearance spaces. When installing, you need to be able to handle without pinching your fingers, but you also don’t want to foam over Grand Canyons.
Therefore, the windows are preferably made slightly smaller than the openings, and ideally the windows are custom made when actual measurements can be taken during the shell construction. Simply put, in most formats manageable by one person, the elements are about 3 cm smaller than the opening. Practically, a 110 x 148 cm window in an opening of 113.5 x 151.
If you order the windows before the shell is completed, you chisel too narrow openings to their nominal size. Wider openings are foamed more if deviations are small and may also require cover strips; in the worst case, a reorder.
I don’t know tolerances in the sense of +- 2 cm or angles here of 89 and there 91°.