roof vent

How to Build an Insulated Cathedral Ceiling

Posted on March 29,2015 by user-756436 in cathedral

UPDATED on September 12, 2014 Although the GBA website already contains many articles on the topic, we continue to receive frequent questions about the best way to insulate a cathedral ceiling. It’s therefore time to pull together as much information on the topic as possible and publish it in one place, to clarify the building science issues and code requirements governing insulated sloped roofs.

Can Cellulose be Used in an Unvented Roof?

Posted on March 29,2015 by ScottG in cellulose

Dean Manoogian has a Cape Cod style house in Portland, Maine, and is puzzling over the best way to retrofit the roof with rigid foam insulation. Working with both an insulation company and a roofing contractor, Manoogian has come up with a plan: apply 2-in. rigid foam on the interior of the dormered roof and then fill the rafter bays with dense-packed cellulose.

Lstiburek’s Rules for Venting Roofs

Posted on March 29,2015 by JoeLstiburek in lstiburek

Building Science Fundamentals: Roof, Part 1: Ventilation

By Dr. Joseph Lstiburek Dr. Joseph Lstiburek talks about the not-so-controversial ways to maximize the efficiency and airflow of your roof and attic. Video Transcript: There’s been so much stuff said about roofs that you sometimes lose perspective. I’m going to start off by saying what might seem controversial but really shouldn’t be.

Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!

Syndicate content