INFRARED THERMOGRAPHY USERS

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INFRARED THERMOGRAPHY USERS

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

Members: 185
Latest Activity: Dec 30, 2016

Discussion Forum

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:http://www.saige.it/Details.aspx?id=41This 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 opinion..am 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 www.IRTalk.com 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 December 13, 2010 at 1:42pm

TJ,

 

Thanks for the follow up with all of us.   Interesting developments.  Thanks for the added images as well.

Comment by TJ Ewing on December 12, 2010 at 7:43pm

Hi all,

Sorry it took me so long to update, I’ve been in a mad dash to the holidays!  So we did take the bulletin board off (which showed evidence of wetting/rot on its backside) and the church reps were more than eager to do a destructive core given the many decades of trouble with this wall. So they did! We learned we have 4" block with at most a 1/2" air gap to the brick that is most likely impeded in many places by mortar. No vapor or air barrier present and no block insulation or filling.  We saw no direct evidence of internal wall moisture. There's been a lot of confusion by the church reps on when the wetness appears. But at this point we have an externally concentrated drainage area of a large portion of roof, potential irrigation spray onto the brick during summer, less than adequate drainage away from the external side of the brick veneer wall, a weak drainage plane, no weeps in the wall, and some contact between the brick and concrete. Controlling water sources is primary in our minds as we think the wall is wicking bulk moisture via the wall surface and from the ground. When the morning sun hits the SE facing wall, it drives the moisture in which condenses underneath the interior wall paint. The church is replacing the bulletin board with standoffs and we are leaving our core hole open for now.  We aim to control moisture first, and when the event happens again, take more details of the internal and external conditions when it does.

Have a great holiday season,
TJ 

 



Comment by Michael Stuart on December 6, 2010 at 7:49am
So TJ... did you ever get the bulletin board down for a closer look?
Comment by allen p tanner on November 18, 2010 at 11:30am
To properly scan a concrete block wall; the wall needs to be thermally loaded. The Delta T needs to be high enough, (18*f or more), to get a good scan. Again, it is nearly impossible to IR a concrete block wall from the inside. Go to nyinfraredscan.com and you will see that we IR block walls as a business. I would not recommend scanning a block wall, especially one with a brick facade, from the inside. Wood frame walls with missing insulation are very well accepted for IR imaging from the inside of exterior walls.
Let me know what you find. Are you going to do a destructive core sample?
Comment by Michael Stuart on November 18, 2010 at 10:57am
TJ, You definitely have an array of theories presented so far. It will be interesting to see what additional data you can obtain on Friday to support or debunk them. Please let us all know what you find. If you take the bulletic board down, please post both visible and infrared images. (We will be waiting in suspense!)
Comment by TJ Ewing on November 17, 2010 at 1:15pm
Thanks for the input Allen. the wall is above grade and is stacked concrete block. Hopefully know more on friday.
Comment by allen p tanner on November 17, 2010 at 1:06pm
The church wall that is showing blue may be wet or may have an active air leak causing the cooling effect. Check along the wall with a radiometric meter and measure temperature difference. A pin point or radiometric moisture meter will confirm moisture.
Comment by allen p tanner on November 17, 2010 at 1:02pm
The bulletin board is causing the wall to appear cool around it as the heat is being redirected away from the wall in this area.
allen@nyinfraredscan.com
Comment by allen p tanner on November 17, 2010 at 1:00pm
The wall appears to be stacked concrete block. To check for open cells, missing insulation or filler: you need to thermal load the wall from the outside and check with IR several times during the loading span to get a good picture of the cells. If the wall is below grade; then it will be harder to test. It appears that the hot electric or water baseboard is heating the wall unevenly and distorting the IR image. It will be nearly impossible to get and accurate IR scan on a concrete wall below grade or in contact with soill.
allen@nyinfraredscan.com
Comment by dale garren on November 11, 2010 at 8:32am
one more question, is the masonary full cell grout?
 

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Discussion Forum

Expert Eye Needed

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

Google Thermal View?

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

Infrared Image - What is it?

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

Timber Home with no effective air barrier

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

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