This group is dedicated to knowledge sharing and discussion of infrared thermography for building sciences and energy applications.

Members: 182
Latest Activity: Aug 4

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New building thermography 360 pages ebook - including blower door and heat flux meter !

Started by Davide Lanzoni. Last reply by Don Fitchett Jan 10, 2015. 3 Replies

Link to buying and pdf preview page: is a rich handbook (over 300 pages in original printed edition, much more in this ebook) about thermography applied…Continue

Tags: door, airtightness, blower, infrared, building

Expert Eye Needed

Started by Matthew P. Last reply by Ed Minch Nov 15, 2014. 17 Replies

Hi AllWanted to get the opinion of an expert.Attached is a photo of a customer's window.... as you can see there is a large cold spot above the window... Here's my I right?The large horizontal cold spot is thermal bridging from the…Continue

Tags: windows, ir

Google Thermal View?

Started by Joshua Knittel. Last reply by tedkidd May 31, 2013. 4 Replies

As most of you know, there is more to an energy audit or energy rating (such as a HERS rating) than just the thermal imaging - but this start up company is using it to get a nationwide database going.........Here's a link to the article on…Continue

Tags: Audit, business, Energy, Google, imaging

Infrared Image - What is it?

Started by Fluke Thermal Imaging. Last reply by Dale Sherman Apr 26, 2012. 6 Replies

We thought it'd be fit to share this infrared image we received from group member, CK Ang, in New Zealand. Just wanted to spark some discussion here on what you guys think this image is of, and what the problem could be. A little background on the…Continue

Tags: Fluke, Ti55FT, telephoto, lens, Ang

Timber Home with no effective air barrier

Started by Davide Lanzoni. Last reply by Sean Lintow Sr Apr 11, 2012. 1 Reply

Hi folks,just another image of a brand new timber home without an effective air barrier, and without sealing tapes.…Continue

New article on infrared thermography

Started by John Snell. Last reply by Jim Klebes Nov 17, 2011. 1 Reply

The Journal of Light Construction has long been respected as a place where builders can educate themselves and share information. I was recently asked to write an article introducing their readers to thermography and how it can be used in the…Continue

Moisture detection, a fascinating thermal signature

Started by John Snell Sep 9, 2011. 0 Replies

I don't mean to derail folks from this website to ours (I often send folks here too!) but that is exactly what I'm going to do because has a fascinating discussion about thermal signatures of…Continue

New York first passivhaus ...

Started by Davide Lanzoni. Last reply by John Snell Aug 25, 2011. 4 Replies

... with windows with a better R-value than walls ?…Continue

Using thermal imagers in the summer

Started by John Snell. Last reply by Tyson Pischel Jul 7, 2011. 5 Replies

Too many thermographers leave their imagers in the case during the summer. This comes, in part, from the way we used to work when imagers were not nearly as sensitive and our understanding of how to use them was limited to winter work.Get the darned…Continue

IR and Moisture Meters

Started by Bret Monroe. Last reply by allen p tanner Jun 23, 2011. 12 Replies

As many of you know the new RESNET Guidelines are being worked on and I am advocating for the use of Moisture Meters to ensure potential serious moisture problems in sidewalls and building substrate material is not being overlooked when identified…Continue

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Comment by Michael Stuart on November 8, 2010 at 10:19am

Sorry for the "20 questions"... but... here you go:

Do you happen to have another image from further back? Or one with a slightly wider field of view? Does the anomaly continue down past the bulletin board to the floor or does it appear to stop mid-wall? Do you have any images of the ceiling area adjacent to the wall? Did you inspect the outside of the wall that corresponds to what you are seeing on the inside? Any downspouts, support structures, earthen berms, etc that may influence the thermal signatures on the wall? Does the wall "get wet" again after heavy rains? Any information on the type of thermal barrier and vapor barrier used in the wall? What was the Delta-T between the exterior of the wall and the interior surface? I take it that this section of the church has a low-slope roof. What kind of roof construction and materials? Standing water is never a good thing. (My first gut reaction is that there might be a roof leak that is entering the envelope and coming down the interior of this masonry wall, but without further investigation or answered questions, I would not venture to surmise more.)
Comment by TJ Ewing on November 8, 2010 at 9:31am
Hi All,
anyone have thoughts on the attached pics of a church masonry wall with external brick facade? The internal wall is wet during summer which may indicate condensation but could also be a vapor drive from external to internal? The roof above does not drain well and had standing water from last rain fall. Any infrared considerations I should take into account when imaging masonry walls?
Thanks for any input/questions.

Comment by Michael Stuart on November 8, 2010 at 7:30am
In case you all have not visited the events section of HEP, I wanted to point out that one of the group's members, John Snell, will be giving a webinar for Energy Center of Wisconsin tomorrow:
(I learn something new every time that I hear him speak on infrared.)
Comment by Fluke Thermal Imaging on November 5, 2010 at 2:56pm
We're with John--thanks for creating this group, Michael. Excited to share thermography information & infrared images with group members! Hope everyone has a great weekend.
Comment by John Nicholas on November 5, 2010 at 6:32am
I completed my Level I training 5 weeks ago and I've had my camera for 4 weeks. I've audited several homes with the IR and Blower Door. I look forward to learning more about what works and what doesn't.
Comment by John Snell on November 5, 2010 at 6:09am
Thanks for starting this one Michael. It looks like Home Energy Pros will be a great place to hang out, especially once the groups begin to sort themselves out and we all end up in the best places.

As many of you know, I've been using thermal imaging since 1983. At that time, working as in the Residential Conservation Service (RCS), a program funded by utilities to reduce electrical usage, it became clear that without themography, we just could not get the job done correctly. At that time we barely had blower doors! The first I used literally required a truck to move it around. We've come a long way.

I've recently been working with my colleagues and a number of our customers to find out how we can use thermography literally 365 days/year, pretty much anywhere in the country. This was not possible in the past mainly due to the limited capabilities of the imaging systems. But many of today's systems are so sensitive that "IR365Anywhere" is now a viable option.

What is required? First, having an imaging system that has thermal sensitivity of 70mK or better, preferably 50mK. Second, MASTERY of the imager, especially knowing how to manually adjust level and span. Third, understanding heat transfer basics and how residential buildings work. Fourth, picking and choosing your time of inspection—clearly this is a limitation for some people for parts of the "365." Finally, having the option to manipulate the environment using either the heating or cooling system and a blower door.
Will it REALLY work everywhere all the time? No, but my experience over 28 years tells me, by following these simple guidelines, we can be successful at finding insulation issues at least 95% of the time and air leakage at least 99% of the time. If nothing else that leaves us room to grow. On those few days when we cannot see what we need to, we should be able to at least learn something about why it didn't work and that also has great value!

I'd invite others to chime in with their experiences, positive and negative, so we can all learn from each other. The one thing I do know is I still don't know it all!
Comment by Michael Stuart on November 4, 2010 at 4:32pm
I've already noticed a few folks sharing thermal images of their work in the photos section, so I thought that perhaps they may be interest in an official infrared thermography group for HEP members.

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