Thank you guys again
well this ist the week.i spook to someone that builds and installs B-venting.he says that is what the do alll the time.replace the glass pannel with plexiglass.he suggested that i could do it myself,cuz he would have to charge about $500.i am pretty good in DIY.but i forgot to ask a few question,maby you guys can help me out.i am going streight into the sl-shaft,3feet by 5 feet.the lengt of the pipe will be about 5feet,than either a flex or 45decree with another 30" to the cap.what i forgot was
1.schould i use alluminium or calvenized?
2.what kind of culking on the cup to the glass.
3.insulation.i have 9" between ceiling and roof with styrofoam 1,5"on the inside on top of ceiling.i have a nice flow of air and everything is try.
how would i insulate the duct,i was thinking of getting a sleave,fibreglass.or just a sheet of fiberglass and lay it on top of the tube.???????????
one other thing that has me wondering.the fan is 8x8.5x5.5.and is attached to the rafter on one side since the space between rafters is 12" or 14" schould i build up on the other side?
well cant wait to get it up there,my new tenant is moving in soon.
Thanks again i am clad i found this side.
i u/l a pic dont know if it helps much.the duct will be right on top of the window,little to the right,