Satellite Roof Measuring

 
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Old 07-21-2009, 10:01 AM   #81
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Re: Satellite Roof Measuring


It took EV a few days I think because they were so back up and Geo was the next day which was good but i was turned off by the price. The problem for me is I am require to get the claims I see that day up and into the insurance companies hands the same day and i dont make as much on a claim as selling roof. So the price point of $7 is a lot better for me with assure calc. So by the time i go out to the house and realize that i cant measure the roof because its too high or too steep then when get back to the office i order the service i am another 1-2 days out. I had a friend who started to use EV for a claim and when he got the drawing back they missed some areas. So he had to call them back and waited another 2 days to get the diagram back that was corrected.
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Old 07-27-2009, 11:47 AM   #82
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Re: Satellite Roof Measuring


Msteinhoff...you claim not to work for GeoEstimator's yet one of your domain names:

www steinhoffcycling com

Redirects to: www estimateroofbysatellite com which is "not" one of GeoEstimators "non-biased, unaffilliated blogs" that happens to be completely biased towards GeoEstimators...

Also available for your viewing pleasure:
www roofsatelliteimages com
www satelliteroofmeasurements com
www satelliteroofestimate com
www roofadjuster com
www measurebysatellite com
www roofmeasurementservice com

I've been lurking for a while now and I'm surprised no one else has brought this up sooner...I mean, you end your comments on your blogs with the same "cheers" you end your posts with here on the forums. It's just kind of annoying that you're trying to hide who you really are. Props to the other services for at least coming out and saying look I'm so and so from this or that company.
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Old 07-27-2009, 12:15 PM   #83
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Re: Satellite Roof Measuring


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Old 07-27-2009, 12:37 PM   #84
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Re: Satellite Roof Measuring


I knew you'd change it that's why I included a google screen shot.

Wow you're even shadier than I thought.
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Old 07-27-2009, 12:52 PM   #85
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Re: Satellite Roof Measuring


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Old 07-27-2009, 03:00 PM   #86
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Re: Satellite Roof Measuring


Quote:
Originally Posted by msteinhoff View Post
You understand you're accusing me of owning a domain (estimatebysatellite.com) that doesn't exist, right? That's why I linked it to whois on Network Solutions - they are a third party over which neither of us has control.

RoofMan0202, I'll stand by my reputation. Shady? I'm a real person with a real name. You're hiding behind the mask on anonymity and your first post out the gate was to sling mud. I'm not going to answer any further charges from you.

Cheers,
Matt
Sorry I meant www estimateroofbysatellite com

I'm not slinging mud, I'm stating what I saw. I did a google search for roof measurements and your steinhoffcycling link showed up attached to the estimateroofbysatellite blog. Sorry I'm not a genius on google and SEO like you seem to be but I'm pretty sure that means you host that site. Then again maybe not, maybe it just mysteriously changed within the same hour that you posted your reply.

My name is Craig and I'm a small time roofer...there now I'm not "hiding behind anonymity."
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Old 07-30-2009, 06:33 PM   #87
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Re: Satellite Roof Measuring


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Originally Posted by msteinhoff View Post
Good example. When my father bought his first nail gun, he was accused of sacrificing quality roofing in favor of raw speed. Other contractors competing for roofing jobs bragged that they hit every nail with an actual hammer. Two years later, they were all using pneumatic tools. Why? Faster is sometimes better.

I'm convinced that remote roof measurement is the next Hitachi NV45AB2... roofers are going to adopt the technology sooner or later. The only question is are they going to be at the front of the curve or behind the curve.

No, that Hitachi will never replace the hammer nor will aerial roof measurement replace the tape measure. That said, I can't imagine climbing on a roof without something a nail gun nor can I imagine doing any volume of roofs without a remote roof measurement service.

Most roofs cost under $30 to measure remotely (using GeoEstimator, YMMV). I'm not sure I can personally measure a roof for less than $30. Maybe if the house were across the street. If it were across town, by the time you figure in my time to drive there and back plus gas, it's a wash.

Cheers,
Matt
I find it hard to believe you have any credibility on here at all...
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Old 09-21-2009, 12:01 PM   #88
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Re: Satellite Roof Measuring


While working with these aerial photography and estimating tools, I have found that if the aerial photograph is not taken directly above the project, the measurements can be skewed. If you use satellite images, the problem can be magnified due the the greater angle of view. For example, if the image is taken off center to the west, and there is a rake edge running east to west, the rake edge on the west side of the ridge will measure longer than the rake edge on the east side of the ridge (knowing that these rake edges are equal in real life). Some images are better than others, however sometimes the clearest image is the most distorted by perspective.

Typically the two rake edges will add up to the overall (up and over the ridge) real-world measured value, however this is not always the case. I believe that this is the case when the image is also skewed in the other direction (north/ South- or some mixture of E/W & N/S offset from center). When the real-world measurements are verified, they will not come out to the same value as is taken from the aerial photographs. This is due to the perspective distortion and camera angle to the subject building. I believe this discrepancy increases with steeper pitched roofs. Has any one else come across this issue?

Thank you,

Eric
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Old 09-21-2009, 12:09 PM   #89
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Re: Satellite Roof Measuring


Aerial Estimating and perspective distortion

While working with these aerial photography and estimating tools, I have found that if the aerial photograph is not taken directly above the project, the measurements can be skewed. If you use satellite images, the problem can be magnified due the the greater angle of view. For example, if the image is taken off center to the west, and there is a rake edge running east to west, the rake edge on the west side of the ridge will measure longer than the rake edge on the east side of the ridge (knowing that these rake edges are equal in real life). Some images are better than others, however sometimes the clearest image is the most distorted by perspective.

Typically the two rake edges will add up to the overall (up and over the ridge) real-world measured value, however this is not always the case. I believe that this is the case when the image is also skewed in the other direction (north/ South- or some mixture of E/W & N/S offset from center). When the real-world measurements are verified, they will not come out to the same value as is taken from the aerial photographs. This is due to the perspective distortion and camera angle to the subject building. I believe this discrepancy increases with steeper pitched roofs. Has any one else come across this issue?

Thank you,

Eric
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Old 10-13-2009, 10:44 AM   #90
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Re: Satellite Roof Measuring


I tried using Eagleview a few months ago. As far as I could tell they did a decent job they were off by 2 squares but no biggie. I heard from my adjuster that they use GeoEstimator which i had never heard of. I have been using Geo ever since. They are easy to talk to in their customer service and the final product looks much better than eagle view to take to the customer.

Charles
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Old 10-13-2009, 11:23 AM   #91
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Re: Satellite Roof Measuring


Hi CBRoofer,

Do you have the report number of the job you placed? If not what email did you place the order with? I'd like to look up the report and see where there might have been a discrepancy.

Thanks,

-Will
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Old 10-13-2009, 01:54 PM   #92
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Re: Satellite Roof Measuring


Quote:
Originally Posted by egmetro View Post
Aerial Estimating and perspective distortion

While working with these aerial photography and estimating tools, I have found that if the aerial photograph is not taken directly above the project, the measurements can be skewed. If you use satellite images, the problem can be magnified due the the greater angle of view. For example, if the image is taken off center to the west, and there is a rake edge running east to west, the rake edge on the west side of the ridge will measure longer than the rake edge on the east side of the ridge (knowing that these rake edges are equal in real life). Some images are better than others, however sometimes the clearest image is the most distorted by perspective.

Typically the two rake edges will add up to the overall (up and over the ridge) real-world measured value, however this is not always the case. I believe that this is the case when the image is also skewed in the other direction (north/ South- or some mixture of E/W & N/S offset from center). When the real-world measurements are verified, they will not come out to the same value as is taken from the aerial photographs. This is due to the perspective distortion and camera angle to the subject building. I believe this discrepancy increases with steeper pitched roofs. Has any one else come across this issue?

Thank you,

Eric
Eric this is absolutely true, and from what we've found you run into at least a small perspective issue on about 95% of roofs measured by satellite/aerial images.

In most cases the biggest problem that's caused by perspective is the individual line lengths being off by a foot or two. When it comes to overall square footage, if the roof pitch is constant and the shapes on the roof are symmetrical, there won't be any discrepancy at all. Of course we know this is not always the case, many roofs have 2 or 3 pitches, and most are not perfectly symmetrical.

That's why EagleView's tools have been designed to identify the perspective of a given image, and account for it in the measurements on our report. We've done this because we know, especially on steeper pitched structures, this can have a large impact on the overall square footage of a roof as well as individual facets/planes/regions/etc. In order to bring you the most accurate measurements available we've taken care of the "perspective issue" for you.

If you'd like a sample feel free to send me the address (make sure you include an image provider) of an image you've found that skews your measurements. We'll measure it for you so you can see the difference.
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Old 10-21-2009, 11:02 PM   #93
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Re: Satellite Roof Measuring


I used Eagle View for the whole season and have nothing but good things to say about them. Very professional and accurate. Could be a little cheaper but still worth it!
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Old 12-19-2009, 09:41 AM   #94
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Re: Satellite Roof Measuring


Will from Eagleview,

Is it true that Eagleview outsources in the Phillipines??

I think there are a couple of Americans here that would be interested in knowing where their money and jobs are going when they order a report.

-AM
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Old 03-25-2010, 03:11 PM   #95
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Re: Satellite Roof Measuring


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Will from Eagleview,

Is it true that Eagleview outsources in the Phillipines??

I think there are a couple of Americans here that would be interested in knowing where their money and jobs are going when they order a report.

-AM
American Made,

That is funny. I overheard when i was at lunch at a conference a while back the guys from Geo Estimator stating that they get there diagrams from India and that Eagleview gets them from overseas also.
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Old 05-17-2010, 12:40 AM   #96
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Re: Satellite Roof Measuring


Sorry if you already are aware but you can use Goggle Earth and Google Maps combined to do a roof takeoff providing they cruised over and by the project site.
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Old 05-17-2010, 09:31 PM   #97
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Re: Satellite Roof Measuring


I believe that to be true as well. Anyone confirm otherwise?
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Old 05-18-2010, 02:12 AM   #98
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Re: Satellite Roof Measuring


I will be able to confirm when i reach 15 posts as i will then post a example on how to do it.
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Old 05-11-2011, 09:53 PM   #99
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Re: Satellite Roof Measuring


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I believe that to be true as well. Anyone confirm otherwise?

sorry for rehashing this thread but i said i would provide a example if Karl is still interested.
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Old 05-30-2011, 12:59 AM   #100
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Re: Satellite Roof Measuring


We've used EV and Geo, I've found EV to be much more accurate than Geo. Either way, we purchased a Pictometry license to get our takeoffs after one of our guys take the pitch onsite. From my own experience, EV, Geo and others struggle to get the pitch 100% correct each and every time.

We've correlated our Pictometry measurements many times and found the accuracy to be quite acceptable. Once we get the measurements, we either use RoofCad or the sketch tool in Xactimate to come up with the roof area. In general, the Adjusters accept our end result when we include a copy of our takeoffs from Pictometry with the Xactimate sketch.

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