"Tips on Using Infrared During a Home Inspection" Class
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- Опубликовано: 4 янв 2017
- Subscribe to our RUclips Channel: ruclips.net/user/internachi?... Learn how home inspectors can use infrared thermal imaging cameras during their home inspection to help do their jobs better. Become Infrared Certified for free at www.nachi.org/ir.
Very informative video, helped to watch beginning at 2x speed then 1.5x once it gets into meat & potatoes of it.
If I lived less than 500 miles from you guys I'd definitely be coming by for a visit.
Thanks for watching, Jon. I am a meat and potatoes kind of guy too. - Ben G
You are a great instructor. I have my Level one Certification in Aerial Thermography and struggled through the class. You make it so clear and easy to understand. I have a FLIR XT 640x512 resolution I use to find trapped water on flat and low slope roof systems as an insurance adjuster and licensed drone pilot. I am going to attend your school as I need the thermal certification for non aerial. Thermal is great for finding bee hives and snakes in the walls and ceiling. I am retiring after 30 years as a property insurance adjuster and want my building inspector cert even if I use it more as a public adjuster. Many thanks for the great RUclips class!!
Nice, Gary. Become Infrared Certified® at www.nachi.org/ir.htm. That's all a home inspector needs. I also recommend taking the free, online InterNACHI® Master Class for Home Inspectors at www.nachi.org/masterclass.htm.
On the example you give water is not emitting the most infrared. It pops out because it is emitting less infrared.
Thank you.
Point of clarification....
Thermal conductivity of concrete is about 2.25 M/mK. Water is about .6 M/mk. I think Ben was talking about heat capacity, the amount of heat stored in water being greater than in stone but the conductivity of the heat (thermal conductivity) is actually better in stone. Metals transfer heat better than nonmetallic, which is why you never mix paper and foil muffin cups when you bake because some will burn on the surface while the paper ones are not done baking. Gasses are also poorer conductors because heat is kinetic (rate of movement of molecules) energy and gasses, being less dense tend to be able to convey that energy slower. Solids of rhe same substance will be faster conductors (typically). Water is weird because it is polar and lines up as a solid to be less dense than as a liquod, which is the opposite of any element. That includes iron, which would be more dense as a solid, for example. If it were not so, ice wouldn't float and colder, more solid metal wouldn't fall into a molten version of itself in a crucible. Ice has to float for life as we know it to exist, BTW.
Heat capacity. Yes. Not conductivity.
Thank you. Was thinking the same thing.
I'm learning a lot from this course
Thank you, Kal.
Thank you. Become Infrared Certified® for free at www.nachi.org/ir
When this first started I was going to turn it off - I am so pleased I did not - It is extremely informative and hugely appreciated. David Welch UK Surveyor - England - Hoo ray for the internet- Thanks Bill G..
Thank you for watching, David. Can't wait to get back to eat at Local Hero, north of Parsons Green.
@@internachi With our current lockdown, I think everyone is keen to get back out eating.
Hi, Thanks for the informative video. What is the brand of the moisture meter used in the video?
I like Extech at inspectoroutlet.com/collections/moisture-meters
Hi thanks for the video, does this work for hot tropical climates?
Yes it does!
thank you and it was a really nice lecture, but i have a question which is can the IR cam sees the wall cracks in case of concrete buildings or not. waiting for an answer?
Hi, Ayman. I don't understand your question: "Which is the can the IR cam sees the wall cracks in case of concrete buildings or not." Infrared cameras do not "see" cracks. Infrared cameras help you see differences in surface temperature.
hi, you got it. alright. here is my question again.
1- does the Infrared cam helps you to see the wall cracks in concrete buildings or not?
2- if not, is there any Infrared cam can do that?
3- can I know or define the cracks in the wall by differences in temperature?
thank you.
1. no
2. no
3. i don't believe so.
You may see some cold moisture intrusion coming through a concrete wall that you heat up by manipulating the environment. But that's a long shot for me.
@@internachi What about really forcing the interior environment. Get it in a solid vacuum state or heat the room. My thought maybe temp in cracks might reveal themselves. Just only something I would try due to lack of experience on trying to find cracks in walls.
Also, run a forceful fan across the walls and see if there is anything that needs deeper inspections. All comments welcome.
Would be nice if there were events in a more centralized location besides Colorodo or south Florida
Agreed. We're building another House of Horrors in Pennsylvania right now. Should be announced in 2020.
Is there a market for thermographers to do initial thermal scans of buildings without being a certified home inspector? I would be looking to either work along side a home inspector or be a supplement to the inspection. I understand this may be a bit of a biased forum to ask, but I'd like to go a bit beyond just aerial thermal inspection of roof and solar without becoming a full fledged home inspector. Really, I'd like to capitalize on my training/cert/experience while not going outside my lane.
Yes. I know InterNACHI members who are primarily home energy inspectors who use infrared. Get certified at www.nachi.org/ir.htm
Such a good webinar
Thank you.
i see that the Flir One Pro has a thermal resolution of 160x120 which is equal to the Flir E6. I understand that you need a mobile device for the Flir One Pro, but given the resolution being higher than the Flir C3, should i consider Flir One Pro as a option for Infrared?
I owned a Flir One. Really nice option to get your foot in the door. But keep thinking of upgrading. I love the Flir C2. Use it a lot.
@@internachi I just jumped from Flir one to C3. Actually, tomorrow will be my first job with the C3 looking for where water is coming from. Will have to force the environment to get the difference.
The slight confusion in this course is that it refers to the bright yellow and dark blue colour gradients as hot and cold respectively. Infact you could change these gradients to a completely different colours that do no depict hotness or coldness. This logic of explanation is not entirely accurate. The colour gradients are only the representation of the relative temperature differentials of objects in frame. Any interpretations without actually looking at the actual temperature measured will ultimately lead to more confusion if one is looking at it from a hot and cold perspective as being explained. Whether 67F is represented as bright yellow or dark blue by an infrared camera is relative to other elements in the frame and you would not necessarily say it is hot or cold. That's just a feedback from watching this course. Great course by the way. Thanks for always sharing knowledge.
Correct. But for me, I set my camera settings so that blue is cool and red is hot.
Thank you
You're welcome, Maged.
luv the gotee!
Thanks.
I guess I was wondering if the corner in the kitchen had a leak and you did inspection could you see it. Or should you inspect home when it is raining ?
That's a great time for a home inspection - during a rain storm.
When I inspect, I run water upstairs, then use IR in crawl, 1st floor in a 2 story, etc ceiling to see if there are stains up above. How would I manipulate the wood/drywall on a ceiling? From your video I assume that I would have to manipulate the ceiling drywall/wood with something that would make it hot. How would I do that?
I carry a fan in my truck. The HVAC can change the interior environment quickly. And you're right, timing the inspection in order to take advantage of the temperature different between the inside and outside is challenging, but possible.
Run cold water. You are watching the difference for temperature anomalies and water likes to resist change.
How about cast iron underground for concrete slap house to see leaks from pipe? Pouring hot water in pipe for awhile will camera goes that much depth like 2 feet or so or less in length?
Nice.
Comparing the different models the E5, E6, and E8 do not stream video. I don't think that would be an issue but is that something I should consider?
I don't need the wifi streaming features for my infrared camera. I like the FLIR C3 (with wifi) at www.inspectoroutlet.com/flir-c3.aspx
International Association of Certified Home Inspectors (InterNACHI) thanks I appreciate the response.
What’s a number from moisture meter device, that tells us we as inspectors need to report it?? If I make sense?
I don't know. Home inspectors really don't measure anything. We just look for anomalies and perform qualitative assessments (not quantitative).
Do you charge extra (Ancillary) for Infra-red imaging?
You may, or you may not. It's up to you. I didn't. I just used the infrared to add value to my inspection service, which then allows me to increase my inspection fee. My goal is to overwhelm potential clients with incredible value so that I can demand higher fees. Get more tips at www.nachi.org/home-inspection-tips.htm
Fantastic video mate but all of you folks teaching this subject are taking videos in hot places whereas the real problem lies in insulation in cold places.
Become Infrared Certified® at nachi.org/ir.
Great Video! Please work on your audio!
Will do, Ethan. Sometimes the audio feature provided by GoToWebinar is not what you'd expect. Thanks for the feedback.
Crazy that now a days a HT-18 off amazon beats both the C2 and the E8 in price at $400 dollars and takes pictures in 220x160 so a happy median. They also offer the HT-19 that takes pics at 320x240 for $600 . .
Nice. Thanks for the information and feedback.
People today are now expecting some sort of thermal inspection these days in 2021. If you don't provide it, I think the clients will feel cheated. My teachers were old school and did not promote thermal and they did not use it for their inspections.
Infrared helps home inspectors do better inspections.
water
cold air coming through the window roling over
Not sure what you're referring to, Bernie. But it's challenging to interpret infrared images. Yep.
44:45 No, the amount of ir energy emited is only dependent on surface temperature and emissivity, nothing to do with heat capacity. Ever heard of the Stefan-Boltzmann law? P(W/m2) = emissivity * 5.670374419...×10^−8 * degreesKelvin^4
45:06 Wrong again. The wall behind you is emmiting nearly the same amount of IR as you are, but the camera made it blue since it's the coldest thing in the image.
your skin: ~95 F ≈ 485 W/m2
the wall: ~80 F ≈ 435 W/m2
The only thing that actually matters for IR cooling and heating is the net IR exchange. You are emitting 485 W/m2 to the wall but since you are getting 435 back, so there's only a net thermal energy flow of 50 W/m2
things that are at the same temperature emit the same amount of IR so there's no net heat exchange.
Even if someting has lower emissivity, it will emit less IR, but since reflectivity is inversly proportional to emissivity, the total emitted will be the same.
A black body with emissivity = 1 wont reflect any IR
A shiny metal surface with emissivity = 0.1 will reflect 1-0.1 = 90% if incoming IR
You should learn the difference between heat capacity and emissivity, they have nothing to do with each other!
Right.
@@internachi Thank you
When it comes to the laws of physics, a little knowledge is dangerous.
And so much fun!
Starts at 9:52
Yes. Thanks.
it would have been better to start with how the camera actually works. its settings and such.
Got it. That's all provided by FLIR. They have a ton of those videos.
walls same thing reflects your body
Maybe.
Your audio quality unfortunately is distorted and variable, making it difficult to follow, presumably down to microphone quality
Thank you for watching and commenting.
No it literally cant say hello
Thanks for watching and commenting.
This is the problem , Rob ,,,,,,,,,,,,,,,,,,,,, you must have wet wood.
Infrared is used for many purposes, not just to help identify wet wood.
not really.
Okay.
Flir thermal cameras suck big time, resolution is too low, there is no support, there is no parts for it nor are there any repairers in Australia, well there is one 1,000 km away in Melbourne and they charge a flat rate to look at it of $250, may be more if it needs to be sent to USA. Needless to say i will never buy another Flir camera ever again. Warranty runs out, $600 camera dies. As for Seek, it's just as bad not worth the money so don't get fulled by repairers on here that are praising the camera's, they are getting paid to advertise it.
Thank you for watching and commenting. More videos are at www.nachi.org/webinars
What would you recommend at a reasonable price?
Audio sucks....
Agreed. Getting better though.
en.m.wikipedia.org/wiki/Table_of_specific_heat_capacities
Thank you.