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: 99

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

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

Bill Midgett is now a member of Home Energy Pros
4 hours ago
Hal Skinner replied to Richard Beyer's discussion Spontaneous Combustion and Flash Fire regarding Spray Foam Insulation
"Richard, here is something else that might be pertinent. In my hundreds of conversations with our…"
23 hours ago
Trip posted a discussion

Starting a Home Weatherization Business. Considering it...

I am considering starting a home weatherization business. (I live in Southeast Alabama)  Currently…See More
23 hours ago
Jim Gunshinan commented on Jim Gunshinan's blog post My Energy Upgrade California—The Numbers Are In
"To all, one thing I don't lack is advice from the experts! Thanks for the input, challenges,…"
yesterday
tedkidd commented on Jim Gunshinan's blog post My Energy Upgrade California—The Numbers Are In
"Jim, I'm glad you are open, that's great!  We all learn best when we are open! The…"
yesterday
David Eakin commented on Jim Gunshinan's blog post My Energy Upgrade California—The Numbers Are In
"Jim, Well, as the editor of Home Energy you should already know that the order of remediation is…"
yesterday
Greg Labbe posted a blog post

Technical Tape Desecration

Lets face it – building science is pushing the performance of adhesive tapes to a new levels and…See More
yesterday
Stacy Hunt posted an event

High Performance Enclosure Strategies: Part II, New Construction at Online

August 13, 2014 from 1pm to 2:30pm
Please join the Building America Program for our free webinar: High Performance Enclosure…See More
yesterday
Richard Beyer replied to Howard Katzman's discussion UV lights on filters
"Howard, There are numerous manufacturer's who swear these systems work and then you have the…"
yesterday
Christopher Morin posted a blog post

How do You Test a TXV?

  Thermostatic Expansion Valves (TEV or TXV), one of the most popular metering devices for…See More
yesterday
Howard Katzman posted a discussion

UV lights on filters

I recently saw UV bulb installations in 2 HVAC systems in a home. Each system had the Lennox…See More
yesterday
Don Fitchett joined Michael Stuart's group
Thumbnail

INFRARED THERMOGRAPHY USERS

This group is dedicated to knowledge sharing and discussion of infrared thermography for building…See More
yesterday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service