ᐅ Change in the size of roof windows after building permit approval
Created on: 27 Mar 2019 10:20
C
chrisw81
Dear forum members,
We have planned to install four roof windows from Roto in our house (two on each eave side), all sized 65x118 cm (26x46 inches).
I recently visited friends who have similarly sized double casement windows, and the width seemed rather narrow to me.
So my question is... is it even possible to change the size after the building permit / planning permission has been granted? I assume the structural calculations won’t be a big issue, since we have a purlin roof, which should allow a width greater than the rafter spacing without much difficulty.
Now regarding the optimal size... Roto also offers widths of 74 cm (29 inches) and 94 cm (37 inches), and the height can go up to 140 cm (55 inches). I think the height of 118 cm (46 inches) is fine, but would 74 cm (29 inches) width look good, or is 94 cm (37 inches) better? Three of the double casement windows to change are in the rooms Kid1, Kid2, and the bathroom. It would certainly look better to have a more generous amount of natural light rather than a small opening, right? The rooms measure about 360 cm (12 feet) in length along the eave side.
In the hallway, where our fourth double casement window is, we want to install an additional double casement window next to the existing one to make the hallway brighter (this would be a kind of “twin installation,” called “Velux Duo” by the manufacturer).
What do you think about this?
Thanks so much in advance!
We have planned to install four roof windows from Roto in our house (two on each eave side), all sized 65x118 cm (26x46 inches).
I recently visited friends who have similarly sized double casement windows, and the width seemed rather narrow to me.
So my question is... is it even possible to change the size after the building permit / planning permission has been granted? I assume the structural calculations won’t be a big issue, since we have a purlin roof, which should allow a width greater than the rafter spacing without much difficulty.
Now regarding the optimal size... Roto also offers widths of 74 cm (29 inches) and 94 cm (37 inches), and the height can go up to 140 cm (55 inches). I think the height of 118 cm (46 inches) is fine, but would 74 cm (29 inches) width look good, or is 94 cm (37 inches) better? Three of the double casement windows to change are in the rooms Kid1, Kid2, and the bathroom. It would certainly look better to have a more generous amount of natural light rather than a small opening, right? The rooms measure about 360 cm (12 feet) in length along the eave side.
In the hallway, where our fourth double casement window is, we want to install an additional double casement window next to the existing one to make the hallway brighter (this would be a kind of “twin installation,” called “Velux Duo” by the manufacturer).
What do you think about this?
Thanks so much in advance!
These are the concerns you need to consider:
64 or 72 cm (25 or 28 inches) width? Height up to 200 or 220 cm (79 or 87 inches)? Pros and cons.
Electric blinds are a must, but what about electric window opening? What else is there for double casement windows? Self-tinting in sunlight, pearl finish, window sill, balcony... I think a very standard house was planned here, right?
@Chris remember the security system: double casement windows are vulnerable!
64 or 72 cm (25 or 28 inches) width? Height up to 200 or 220 cm (79 or 87 inches)? Pros and cons.
Electric blinds are a must, but what about electric window opening? What else is there for double casement windows? Self-tinting in sunlight, pearl finish, window sill, balcony... I think a very standard house was planned here, right?
@Chris remember the security system: double casement windows are vulnerable!