24 Jan '12, 2pm

Green Building Q&A: Insulation for Vented Cathedral Ceiling

Hi all. I know the issue of insulation for cathedral ceilings has been addressed before, but I am still confused by what the best approach is for a vented cathedral. I live in Westchester, NY. We currently have 3 large skylights in our great room. One has developed a bad leak, so we have taken down much of the ceiling and are now considering the choice of fixing them or eliminating them. The beams are 2x10s, which currenly have about 10 inches of fiberglass batts. there is no vent channel against the roof, so I assume the air just moves through the fiberglas. The cathedral ceiling runs up into my regular atttic, where I had them put a channel where the cathedral comes in (and seal around the channel) and which has a ridge vent. If we get rid of the skylight (which I am leaning towards), I would open of the rafters so that there was direct flow from the soffit to the attic....

Full article: http://www.greenbuildingadvisor.com/community/forum/energ...

Tweets

Green Building Q&A: FIXING OLD CATHEDRAL CEILING

Green Building Q&A: FIXING OLD CATHEDRAL CEILING

greenbuildingadvisor.com 31 Jan '12, 5am

Soon after moving in I was about to paint the living room as I hated the color and there were just a few water stains on t...

open cell foam or cellulose over ceiling? #green

greenbuildingadvisor.com 27 Jan '12, 6pm

The ceiling has been dropped 1 foot, and sheet rocked, as well as painted- 1 prime and 2 finish coats. Tek track lighting ...

Green Building Q&A: Insulating a non vented vau...

greenbuildingadvisor.com 16 Jan '12, 7pm

i am hoping to get some feedback on the issue I have found in my house while redoing our dining room. The electrical issue...

I have a 50 year old home with a vented slate r...

greenbuildingadvisor.com 23 Jan '12, 2am

I have a 50 year old home with a vented slate roof. The HVAC system is in the attic.....not efficient. Is it reasonable to...

rigid foam ceiling question #green

greenbuildingadvisor.com 29 Jan '12, 6am

i'm building an icf home in WV. i have my roof trusses on 24" centers, 2x4 bottom chords, and 9'7" from the floor to the b...

Green Building Q&A: Opinions on radiant ceiling...

greenbuildingadvisor.com 31 Jan '12, 4pm

I checked out a building yesterday that had heating mats like this one installed in four areas. Obviously it's electrical ...

Green Building Q&A: How to add insulation

greenbuildingadvisor.com 16 Jan '12, 12am

We built a log/timber (Lindal Justus) home in 2000 and insulated our 12" roof rafters (I beam) with 6"+- of icynene per th...

Green Building Q&A: Adding rigid foam over exis...

greenbuildingadvisor.com 29 Jan '12, 4pm

I like in northwestern North Carolina (zone 7) in a Cape Cod style house. The upper rooms are pretty uncomfortable in the ...

What wrap or spray insulation would be recommen...

greenbuildingadvisor.com 28 Jan '12, 2pm

Martin as usual is spot-on. Cantilever penetrations of the building wall should be considered a no-no for several very goo...

Double Bubble for Underslab insulation #green

greenbuildingadvisor.com 21 Jan '12, 3pm

I found a thread on GBA "discussing" the pros and cons of using foil based radiant barrier products for insulation of duct...

A question about straw insulation... #green

greenbuildingadvisor.com 01 Feb '12, 7am

My name is Michael Garrison, a 30 year carpenter with 17 years building experience in Alaska. I had a friend who used stra...

Green Building Q&A: Okay to use Open Cell foam ...

greenbuildingadvisor.com 17 Jan '12, 1am

I have a bonus room that has accessible 3 walls and the ceiling. The room is already insulated on the walls with R-11 and ...