Roof window options

Hello everyone,

we have a bathroom on the upper floor with approximately 8 m² of floor space. Actually, we wanted to install two roof windows with the dimensions 78*114 (W*H), which was agreed upon with both the planner and the carpenter. However, the roofer now says that due to the battens, the 114 dimensions and also the 98 dimensions don’t work, but only 55 * 78 cm (don’t ask me what went wrong there – I assume the detailed planning could have been a bit more thorough -.-). Well, now it is like that. We are worried that it will be too dark. Wider windows – like 140 * 78 or something similar – apparently don’t exist. Alternatively, we were recommended a daylight spot... we are not so convinced of that, since there is a pipe construction on the attic and that would certainly involve an additional cost ^^

I find it hard to imagine the size – are 2 smaller windows (55*78) also enough to pleasantly illuminate the bathroom with daylight (45° roof pitch)? Do you know any other solutions – e.g. manufacturers who offer windows in different formats? The roofer apparently installs either Lux or Oto.

Thanks for your input Best regards

just checked that Roto indeed also offers other dimensions than the 55 width with 78 height - then we will go to the roofer with that and ask. Your opinion is of course still important :)

The width probably concerns the fact that there is not enough space between the rafters anymore. The space could be increased by installing a beam between the rafters. But that costs money again. Then wider windows can also be installed.

Exactly, therefore originally the 66*114 - so two of those. But since that is not possible now - meaning there are only the 55*78 from Lux - the options would now be two 74*78 windows from Oto or one 134x78 window from Oto (then just spanning over the rafter).

At a pure glass surface, there would not be much left with the now offered size. Is the Da Gestühl already standing? Do you have a gable window that still brings light into the room?

What type of orientation does the roof have?

asks Yvonne