Come check out BPI's monthly newsletter, Performance Matters!

The image below was taken by Matt Schwoegler, a thermographer and infrared instructor with the Snell Group. Matt was on location in Vermont, helping to train a weatherization crew from the Champlain Valley Office of Economic Opportunity (CVOEO) which was already working on the home. The room in question was used by the homeowner as a three-season porch/bedroom. Matt explains that this portion of the home appeared to be an addition to the original structure, and was likely moved to the home's location where it was connected to the main house.

During the infrared training and building inspection, which was taking place in warm weather conditions, Matt found what appeared to be an insulation level on the wall in this room. While the ceiling appeared to be uninsulated, what was happening with the wall was not as clear.

So, what's wrong with this picture?

Tags: BPI, Chump, Newsletter, Stump, the

Views: 131

Replies to This Discussion

Key is this was done in warm weather. The back wall of the room was also uninsulated, but the lower portion was against the air-conditioned envelope of the home. The red area above was against the attic area, causing the increase in temperature.

Warm weather conditions is pretty relative and for Vermont 75 degrees F can easily be seen as warm weather, not to mention the fact that many VT homes don't use air conditioning. If the porch was an addon with an uninsulated roof then we can probably assume there are some air leaks causing cooler interior air to be drawn to the space from the opening to the house. If the main house has insulated exterior walls, which in VT I assume it does, than AC cooling is probably not the culprit or the cooler walls. If there is humidity from lack of a conditioning unit then the cedar walls are probably absorbing moisture and as the air moves along them, evaporation will cause the walls to cool. The hotter roof can easily be from solar radiation or a mini stack effect from the uninsulated and non vapor sealed roof. I do see a couple hotter spots on the side walls though, which leads me to believe that the temperature difference is purely solar radiation, and most parts of the exterior porch walls are shaded.

RSS

Videos

  • Add Videos
  • View All

Latest Activity

Brad Cook replied to Jim Tenhundfeld's discussion LED's and motion sensors
"My first thought is whether the motion sensor and/or the LED lamp is a cheap one. I had so many…"
58 minutes ago
John Wagner 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
8 hours ago
Home Energy Magazine posted a blog post
9 hours ago
Jim Tenhundfeld posted a discussion

LED's and motion sensors

When completing an audit, a customer told me that when he installed a LED lamp in his outdoor…See More
14 hours ago
Barbara Smith posted videos
yesterday
CharlieK posted a discussion

Eco-Cottage Program Applauded By Housing Groups, Suppliers & Lenders

AmeriSus a leading player in the eco-kit home business kicked off a new program on MLK-day which…See More
yesterday
Diane Chojnowski posted a discussion

Call for Nominations: Tony Woods Award and Building Performance Hall of Fame

The Building Performance Institute, Inc. (BPI) is seeking nominations for the 2017 Tony Woods Award…See More
yesterday
Diane Chojnowski added a discussion to the group 1000 Home Challenge
Thumbnail

January Webinar: Intro to the 1000 Home Challenge

The January Intro to the 1000 Home Challenge webinar will be  Friday, Jan 20 at 10-11:30 AM eastern…See More
yesterday

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