Hi, I wanted to ask for your advice here on the forum. My roofer started building a wooden frame for a new roof window - pivoted Velux 2070. With the dimensions of 55x78cm it seems to me rather small and I would be interested in having a bigger window to provide as much natural light as possible. My builder is saying that the frame he constructed is of the maximum size possible without seriously changing structural parts of the roof. I'm not a specialist, but it seems to me that since the two rafters are already cut (see photo attached) that the size of the frame and window could be significantly bigger - or am I missing something? Advice appreciated!
He means that if you were to go bigger you’d have to double or possibly triple up the rafters either side of the velux opening. It can be done, it is just more work for him.
As above, but don’t forget it’s your roof if you want a bigger velux tell your builder that’s what you want
We agreed a new improved frame and a bigger window size - so everything resolved. Thanks for your help everyone!