This 6,000 sq. ft. home was built in 1983 as an all-electric home. Fast forward 27 years later after the house was converted to gas heat and a new properly installed roof in 2010. Those are 2 x 10 rafters with an average of 2 to 4 inches of fiberglass insulation between them and no soffit baffles. 

 

We went from maybe R-11 to R-60 and the customer will get 100% ROI in less a year. 

 

Out of sight ... Out of mind ... Out of pocket $$$$$$$$ 

Views: 114

Attachments:

Replies to This Discussion

Jim,

What was the incident that caused this problem to be looked at? Ice Dam previous years? Damage from Ice Dam to roof, thus the new roof in 2010? Energy Audit? HO noticed insulation deficit?

John Nicholas
John,

This is actually my neighbor's house that she bought in 2009. The previous owners did no maintenance on the exterior of the home for the last 15 years. The new owner and her son asked me to be their GC and give them a job list for the exterior work that needed to be done. My number one priority was to stop all possible water leaks into the shell of the home. The home still had the original 1983 roof with missing shingles and several of the 13 skylights were leaking. We had the original roof torn off, installed new flashing and ice guard in the valleys and all edges before the new shingles were put on. Five months later our area experienced the worst ice dams in 20 years and the neighbor calls to tell me the her new roof is leaking. I explained to her the leaking was probably due to heat loss through the roof that was melting the snow pack on the roof and letting the water under the snow pack run down to the cold edges where it was re-freezing. I then went into the attic for the first time and confirmed the lack of insulation and improper ventilation. Ice dams are usually not caused by roof issues but quickly turn into roof issues.

I had another customer that was also having ice dams issues with his home built in 2005 and we determined it was due to the gas furnace in his attic generating enough heat to melt the roof snow pack which is something very few builders think about before they place the furnace in an unconditioned attic space.
Jim,

Thanks! I was curious about how the problem was identified. I have not had one on my home or observed one during an audit. I have experienced them in a commercial setting. The building had 4 foot eves, and a indirectly conditioned attic, DT the water charged fire sprinkler system. The valley's were a mess, about 8 feet above the inside eve line. The ridge would be 21 feet horizontal from there.

RSS

Discussion Forum

Return Possum

Started by Stefan Peter-Contesse. Last reply by Alice La Pierre Oct 26, 2015. 1 Reply

Easy Water Heater Venting

Started by Kari Sauder. Last reply by Matthew Lutz Oct 23, 2014. 22 Replies

Thank-less water heater

Started by Andy Simms. Last reply by Dennis Heidner Jun 13, 2013. 12 Replies

Easiest way to convert 2"x10" into 2"x5"!

Started by Greg Labbe. Last reply by Bill Smith May 2, 2013. 4 Replies

Videos

  • Add Videos
  • View All

Latest Activity

Ashique Ibrahim posted a status
"Hello everyone.Please suggest a software to carry out analysis of energy auditing."
2 hours ago
Ashique Ibrahim posted a status
"Hello guys. I am student im doing my project on emergy auditing and benchmarrking. Please suggest the best software to do the analysis."
3 hours ago
Adin Maynard replied to Adin Maynard's discussion 2x DG-700 manometers for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Yes, one is still available ."
20 hours ago
Mark Thomas replied to Adin Maynard's discussion 2x DG-700 manometers for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Very interested in purchasing a dg 700. still availible please let me know asap. Thanks!"
21 hours ago
Profile IconMark Thomas and Donn Anderson joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
21 hours ago
Bob Blanchette commented on Home Energy Magazine's blog post Demand Response Programs Can Reduce Utilities' Peak Demand by an Average of 10%, Complementing Savings From Energy Efficiency Programs
"www.smarthours.com This is our utilities OPTIONAL program. Basically pay 1/2 the normal rate most…"
yesterday
Profile IconAshique Ibrahim, Robert Cherry and Donn Anderson joined Home Energy Pros
yesterday
jackie harsha added a discussion to the group Marketing Energy Efficiency
Thumbnail

Informative video about energy and its implications

Like many, I’ve been struggling with the differences between what consumers say and what they…See More
Friday

Home Energy Pros

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.

Home Energy Pros was founded by the developers of Home Energy Saver Pro (supported by the U.S. Department of Energy) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network. Please honor our Guidelines

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service