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Blog #039 – Your THERMOGRAPHY COMFORT LEVEL – What information should I collect?

When you are back at the office with your images downloaded to the computer it’s time to analyze, interpret  and write your report supporting your interpretation.  Is it missing insulation or not?  Is it a moisture issue or not?  Certain questions have to be asked and answered before you can make your conclusions.  Remember, you might be asked later down the road to defend your interpretation.  Do you have all of the facts relative to the circumstances under which that image was taken?  For example, look at the right hand side of the image below.  Is the wall insulated or not?

Right side is west wall.  Taken with Fluke Ti32.

Right side is west wall. Taken with Fluke Ti32.


Can you tell whether the west wall (right hand side of image) is insulated or not?  Let’s say that it is the summer season and it is hot outside.  Then it is insulated.  Let’s say it is a cold winter day with overcast skies.  Then it is not insulated.  Let’s say that it is a cold winter day with clear skies and the sun has warmed up the outside of this west wall surface to 100°F.  Then it is insulated.  Would you agree, then, that certain information is critical to your interpretation?  I’ve put together of list of information that would be appropriate to think about.  You would pick the specific  items depending on the type of investigation you will be performing.  Some of the information for a moisture investigations is different that information you will need for insulation and air leak investigations.

Inspection type: (moisture   /   insulation   /   air leakage  /  roof)
Job name  
Inspection Date/Time:  
Weather conditions  
Location: inside/outside  
Floor (basement, 1, 2 etc)  
Room (bedroom, closet, hall, etc)  
Compass (north wall, south wall, etc)  
(exterior / interior) wall  
Describe other side of wall  
Heat source (outside/inside)  
Outside surface temp  
Ouside ambient temp  
Outside dew point  
Outside relative humidity  
Inside surface temp  
Inside ambient temp  
Inside dew point  
Inside relative humidity  
Solar load (yes / no)  
Pressurized (pos/neg)  
Thermal boundary conditioned space
  unconditioned space
  indirect conditioned space
LENS / FOV (feet) / IFOV (inches)  
Surface type (paint, vinyl, tile, etc)  
Wind speed (from direction)  
Moisture meter Brand?                        /invasive or non-invasive  / wet or dry
Problem missing insulation
  degraded insulation
  air leakage (direct / indirect)
  thermal bypass
  wind washing
  thermal bridging
  wet insulation (inside cavity)
  water intrusion (wet envelope)
  condensation on surface
Repair recommendation  
Repair priority (high/med/low)  
File name  
Camera (Manufact / model)  

How’s your comfort level in thermography?
(The above comments represent my opinion).

Rod Hoff / Restoration Consultants Inc
Thermography Instructor / IR camera sales
3284 Ramos Circle, Sacramento CA 95827
toll free 888-617-3266 ext 301
fax 916-736-1134

Provider of Fluke TiS, TiR, TiR1, Ti, Ti25, TiR27, Ti27, TiR29, Ti29, TiR32, Ti32, TiR3, and TiR4 infrared cameras.


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About infrarod

Rod Hoff is a Thermographer and instructor with Restoration Consultants, Inc. He teaches a two-day IR class in moisture and building envelope investigations. A graduate from Florida State University, with a degree in education, he received his formal training in Thermography from Snell Infrared and Restoration Consultants, Inc.

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