Hi,
I have 225 x 75 joists, 5.8m span.
I wasn't planning on any roof windows but after getting the first deck on it is rather dark and when some changes are made to exisiting house the existing livingroom will get a bit darker so I'm planning a roof window in new extension towards livingroom end wall opening.
Window people said that a 300mm x 1500mm unit would weigh about 40kg, do you think two joists bolted together each side of the window would be enough? Roof is 400mm centers, particular size I was looking at would need 500mm gap.
Window http://www.ebay.co.uk/itm/331071308...49&var=540269236576&ssPageName=STRK:MEBIDX:IT
U-Values seem good, look good, bigger and cheaper than a velux fixed dome, they are rather tempting.
Any thoughts re joists would be great!
Thanks a lot
Hank
I have 225 x 75 joists, 5.8m span.
I wasn't planning on any roof windows but after getting the first deck on it is rather dark and when some changes are made to exisiting house the existing livingroom will get a bit darker so I'm planning a roof window in new extension towards livingroom end wall opening.
Window people said that a 300mm x 1500mm unit would weigh about 40kg, do you think two joists bolted together each side of the window would be enough? Roof is 400mm centers, particular size I was looking at would need 500mm gap.
Window http://www.ebay.co.uk/itm/331071308...49&var=540269236576&ssPageName=STRK:MEBIDX:IT
U-Values seem good, look good, bigger and cheaper than a velux fixed dome, they are rather tempting.
Any thoughts re joists would be great!
Thanks a lot
Hank
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