Roof rafter support?

[Jeffrey S. Campbell]

hmm... any cantilever would have the tendency to move some... and where this abutts a wall on the dormer... i do not think it is a good idea to have it able to move at all... nail it and nail it again!

[Richard A. Hetzel]

OK, if you're going to nail the rafter ends to the dormer wall, then tell me, what's directly under the dormer wall which can take the load of the rafters?
My guess is: nothing! So do you want a load which does not have a direct path to the earth? Do you want excessive deflection in the probably-barely-adequate-if-that former ceiling joists below?

Think before you nail, and if you're not certain about what you're nailing, then consult someone who knows before going off half cocked.

At least allow for the possibilty that whoever designed this cockamamie additon, if there was anyone who did, just might have known what they were doing.

[Jeffrey S. Campbell]

nail the pi$$ out of it....

I was being a smart *****... read my earlier post saying he should refer it to be looked at... of course there is more to be seen here but saying it is better to leave it floating is not wise either...

I think he now sees that referring it out to be looked at further is a good idea and just because it has been there for years does not make it right.

[Richard A. Hetzel]

Agreed. (NOT that you were being a smart-*****, but that it needs to be looked at!)