Instead of installing plywood sheathing, roofing paper and shingles, I put together a video shows how solar modules could be attached directly to the roof trusses.  

http://www.youtube.com/watch?v=nNT5QxBkyiY

Since you have to install a roof anyway, the labor cost of installing the solar modules is essentially zero.  Attaching the solar directly to the roof trusses also avoids the furture maintenance costs of having to remove solar modules that are mounted on top of three-tab shingles that need replacing every 15 or so years.

I picked Silicon Energy's solar modules because they are one of the few (only?) modules that are built to 4'x4' nominal dimensions.  They are also glass-on-glass moduels which makes them extremely strong and very durable. 

I do not have any financial interest in Silicon Energy.  The design I show is a theoretical design using an actual Silicon Energy module.  To my knowledge, Silicon Energy currently does not have a gap seal design that would be water tight and bolt directly to the roof truss like I show in the video.  However, I don't think it would be too hard for them to do.

Views: 48

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Stan Kuhn replied to Mike Kandel's discussion Have you heard!? BPI's BSP Certificate Approved as Home Energy Score Prerequisite in the group Building Performance Institute (BPI)
"Mike, are there any statistics on the number of HES ratings performed, by all providers?"
2 hours ago
Mike Kandel added a discussion to the group Building Performance Institute (BPI)
Thumbnail

Have you heard!? BPI's BSP Certificate Approved as Home Energy Score Prerequisite

The Building Performance Institute's Building Science Principles (BSP) Certificate of Knowledge has…See More
2 hours ago
Mike Kandel posted a discussion

Have you heard!? BPI's BSP Certificate Approved as Home Energy Score Prerequisite!

The Building Performance Institute's Building Science Principles (BSP) Certificate of Knowledge has…See More
2 hours ago
Shawna Henderson posted a status
"New Blog Post @HomeEnergyMag Why I like Dumb, Do-Nothing Houses http://shar.es/1WSOIX"
3 hours ago
Larry Gorman posted a discussion

Hobo Data loggers for sale

I have recently retired and no longer have need of these, which are all in like new condition.  I…See More
4 hours ago
Laurel Elam posted a blog post

Over 146,000 Homes in the U.S. were HERS Rated and issued a HERS Index Score in 2014

In 2014 there were 146,860 homes in the United States that were energy rated by certified RESNET…See More
5 hours ago
Shashank Kirloskar posted a blog post

Top 8 Solar Panel Manufacturers in India

Non-Renewable resources are reducing rapidly. Powering homes and offices through other means,…See More
15 hours ago
Avi Yashchin posted a blog post
17 hours ago

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service