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  #16  
Old 12/27/17, 7:08 AM
Linas Dapkus, CMI's Avatar
Linas Dapkus, CMI Linas Dapkus, CMI is online now
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Default Re: Thermal imaging photos

Frank, Contact Jim or Chuck if their explanation given here was not sufficient.
Robert is a wannabe thermographer and just babbles nonsense and should be ignored.



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  #17  
Old 12/27/17, 7:49 AM
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Default Re: Thermal imaging photos

Linus, I thought you only knew about used dishwashers?
Hopefully some one will put you back in your cage.
No wonder Jim keeps his distance. I certainly would to keep my reputation.



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Last edited by ryoung7; 1/1/18 at 5:08 AM..
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  #18  
Old 12/27/17, 10:45 AM
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Default Re: Thermal imaging photos

Quote:
Originally Posted by ryoung7 View Post
Jim, I did not realize that accepted industry practice, and published standards, call for an inside to outside temperature difference of 10C (18F) for 3 hours prior to, and during an infrared inspection.
If that delta difference can not be obtained with exterior temperatures, and there is no HVAC to create a delta T, what do you do?
Looking forward to your answer.
Robert:

Requirements for infrared inspections of building envelopes may be found within the Standard for Infrared Inspections of Building Envelopes.

For infrared inspections conducted for the purpose of detecting energy loss, the following conditions are listed within the Standard:

9.4.3 Inspection Procedures

9.4.3.1 With help from the end user or the end user’s representative, the thermographer will define the thermal boundaries of the building envelope.

9.4.3.2 When performing infrared inspections to detect energy loss, the temperature differences across the building envelope will be at least 10 C° (18 F°) between:

9.4.3.2.1 The conditioned and unconditioned surfaces for at least three hours before performing conduction inspections.

9.4.3.2.2 The building’s inside air temperature and its outside surface temperature when inspecting for air leakage from the outside of a building that is under positive pressure.

9.4.3.2.3 The building’s outside air temperature and its inside surface temperature when inspecting for air leakage from the inside of a building that is under negative pressure.

For your reference, a full copy of the Standard may be found on the InterNACHI website at the following URL:

https://www.nachi.org/documents2012/...ndard-2016.pdf

While it is possible to detect evidence of some building envelope deficiencies with smaller Delta Ts, the above parameters are intended to ensure steady-state heat flow conditions and provide the best chance for accuracy when conducting inspections for energy loss. These same requirements have been followed by thermographers in the United States, Canada, and Europe for over 30 years.

Whenever site or object conditions are insufficient for conducting an accurate infrared inspection, a thermographer should postpone the inspection until such time that appropriate conditions do exist.

I hope this helps.





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Last edited by jseffrin; 12/27/17 at 12:27 PM..
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  #19  
Old 12/27/17, 11:49 AM
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Default Re: Thermal imaging photos

Thank you Jim.
Always appreciate you comments.
I will revisit the curriculum; 9.4.3 Inspection Procedures, Requirements for infrared inspections of building envelopes in the material I have from infraspection institute.



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  #20  
Old 12/27/17, 12:03 PM
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Default Re: Thermal imaging photos

See what I mean Frank?



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  #21  
Old 12/27/17, 12:59 PM
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Default Re: Thermal imaging photos

Linus, 'Outside temperature was '50 degrees' interior was heated to '70 degrees.' The visible areas of attic were not insulated. '

Appears he was within the threshold.

Linus, it appears you talk to Frank about people, and appliances, and give no REAL information as to Frank.
Is that all you do hear Linus?



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Last edited by ryoung7; 12/27/17 at 1:09 PM..
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  #22  
Old 12/27/17, 1:36 PM
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Default Re: Thermal imaging photos

Jim, thank you for the PDF. I was taken back between the thread and infrared used for energy loss. My mistake.

I did not see any mention of Frank inquiring about energy loss.
I personally thought he was referring to, does any think the contractor installed insulation in inaccessible spaces, stud bays.

9.4.3.2 When performing infrared inspections to 'detect energy loss,' the temperature differences across the building envelope will be at least 10 C° (18 F°) between: 9.4.3.2.1 The conditioned and unconditioned surfaces for at least three hours before performing conduction inspections.

By his readings the areas of concern met the minimum threshold with 2°'s to spare.

I have not looked into energy-loss using Infrared Tomography. Prior any home inspection I ask clients to ask the vendor for energy bill invoices over the last 2 years. I do not do energy audits.



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  #23  
Old 12/27/17, 1:44 PM
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Default Re: Thermal imaging photos

Quote:
Originally Posted by ldapkus View Post
See what I mean Frank?
See what I mean, Frank.
Again, Linus offers no useful information to you on the subject at hand.

May be if you go to the classifieds section. That's were some cohorts and subordinates are gathered to offer disparaging remarks towards the opposite sex.
Look under, Used Dishwasher for Sale.

I personally saw no dishwasher and asked to have the thread removed.

Funny come to think of it. Like his posts here, meant to discredit a human being.
Too bad.
So, Sad.



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  #24  
Old 12/27/17, 1:57 PM
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Default Re: Thermal imaging photos

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  #25  
Old 12/27/17, 2:43 PM
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Default Re: Thermal imaging photos

Let me post material from Infraspection educational material I obtained through Infraspection Institute - Standard for Infrared Inspection of Building Envelopes.

Course philosophy: There are no stupid questions.
Questions welcome at anytime.

Keep an Open Mind.
- Applications and theory.

Hope that helps.



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  #26  
Old 12/27/17, 4:23 PM
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Default Re: Thermal imaging photos

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  #27  
Old 12/28/17, 12:58 AM
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Default Re: Thermal imaging photos


I guess I should no better than argue with a person that knows such institutes.
As the old saying goes, 'When you wrestle with a pig in the mud you get dirty while the pig enjoys it.'


Sorry for taking the thread to uncharted waters, Frank.
I hope you take Jim up on his offer.



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Last edited by ryoung7; 12/28/17 at 1:16 AM.. Reason: Cleaning up my post. The members deserve better.
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  #28  
Old 12/28/17, 1:32 AM
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Default Re: Thermal imaging photos

Quote:
Originally Posted by ryoung7 View Post
Thank you Chuck.
Quoting me was unneeded/uncalled for. Trust me.
I was trying to bring Jim Seffrin into the conversation. We hear so little from Jim. I thought it would be a positive turning point. I doubt others would disagree but it's always Jim's choice.

On that note. I took Jim's observation relating to roofs. The OP posted, 'Rehab company finished the upper attic out.'
I guess I should have been more open minded and thought envelope.

Best.
Robert
If you want to be picky about who you get responses from, don't hijack someone else's thread, better yet, stay off the public forum altogether. Next time email the person you want to talk to directly, then you won't have to worry about responses that you consider to be "unneeded/uncalled for".

If you want personalized training, perhaps you should sign up for a class.



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  #29  
Old 12/28/17, 6:31 AM
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Default Re: Thermal imaging photos

You might have fished with Jim, but his professionalism is quite different than yours.

As for your intentions, all too obvious.

Question. So how does PM'ing or emailing others help all the members here again? I did noit think helping was select. Hmm?

Maybe you should learn to help members instead of defending 'sick individuals', or at lest teach members how to adjust emissivity to 0.90 for Enamel: lacquer. I think that is what used dish washers outer surfaces are finished with.

From what I have learned, I think that is the intent of the InterNACHI MB, and through help, there was much to be discussed. This thread could have evolved as well as the participants.

Food for thought member of the year.



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Home Inspections & Building Inspection Services. Covering on and off islands in greater Montreal and Laval. (514) 489-1887 or (514) 441-3732.
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Last edited by ryoung7; 12/28/17 at 7:01 AM..
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  #30  
Old 12/28/17, 7:03 AM
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Default Re: Thermal imaging photos

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