On Oct 24, 9:14*pm, aemeijers wrote:
Aaron Fude wrote:
Hi,

My carpenter just told me that if I am having a skylight put in
between two rafters, I should double up each rafter because the hole
in the wall weekens the roof. Do you agree with that?

Thanks,

Aaron

Not unless the skylight runs most of the way from the wall plate to the
ridge. A typical residential skylight, no more than 24x48, will be no
problem unless the roof is weirdly framed. It is usually a good idea to
box the *2 rafters around the hole, though. Keeps the area stiffer, and
makes the skylight less likely to leak. I'm old fashioned, I like to see
a box frame extending through the roof, with the metal skylight frame
several inches above the shingles. Makes it easier to change down the
road when it fails, since the skylight waterproofing is above the main
flashing where the shingles and box frame come together. It also reduces
the chances of ice dams on the skylight. Unless you have a cathedral
ceiling, you'll be framing up a tube down to the finish ceiling anyway.

--
aem sends...

Hi,

This is where I'm putting skylights:

http://freeboundaries.com/howtoframe.jpg

They are 22x54 and I will have 4 of them and a cathedral ceiling.

What would your recommendation be about that?

Thanks,

Aaron