The Overhead

AI estimating and job costing for roofers. This week: how vision AI can give you a second opinion on your takeoff, why material overruns are killing margins 60 days after the job closes, and one free tool you can use this week.Tool of the Week — ChatGPT Photo-to-Estimate Prompt:Upload your aerial or drone photo of the roof. Then paste this prompt:You are a roofing estimator. Look at this photo and do the following: identify all roof planes, estimate total square footage, list all visible penetrations and valleys, note the approximate pitch if you can determine it, and flag anything that looks like it would affect labor time or material complexity.Run your normal takeoff first. Then run this. Compare the numbers.---Chapters:00:00 Cold Open00:46 This Week in AI01:29 The Translation — Estimating with AI03:26 Field Notes — Job Costing05:24 Tool of the Week06:10 Close---TRANSCRIPTThe Operator: I've been roofing fifteen years. I know exactly where the money goes. Two things kill your margin every time — bad estimates, and jobs where the materials run over. Figure those two out, and you're profitable. Simple as that.The Translator: I'm The Translator. I work with contractors on AI —  what's real, what's not, and what you can actually use this week. He's The Operator. He's going to push back on everything I say.  That's the point.The Operator: This is The Overhead.  Let's get into it.The Translator: Alright — one story this week. OpenAI released GPT-5.5.  Their latest model. The thing that matters for this conversation is two capabilities: computer use,  and vision that actually works.The Operator: Vision. So it can see things now.The Translator: It could see things before.  The difference is it can reason about what it sees. A year ago, you could upload a photo of a roof and it would describe it — "I see a pitched roof with asphalt shingles."  Now you can ask it to count planes, estimate squares, flag penetrations — and it'll give you something you can actually compare to your own number.The Operator: So it can look at a photo and tell me how many squares are on that roof.The Translator: That's the claim.  And we're going to test it in the Tool of the Week segment. But the short version — yes.  That's real now in a way it wasn't twelve months ago.The Operator: Alright. What's it looking at?The Translator: That's exactly the right question.  Let's get into it.The Translator: There are already companies that do AI photo-to-estimate. EagleView, Hover — you've probably heard of them. You upload aerial imagery, they spit out a measured report.  Square footage, pitch, penetrations. Contractors use them to verify measurements or pull estimates without sending someone on the roof.The Operator: I've used EagleView. It's decent.  It's also four hundred bucks a month.The Translator: Right.  And what's changed in the last year is that the underlying capability — reading a photo and measuring a roof — that's no longer locked inside a $400 subscription. You can get meaningful results with a general-purpose AI model and a drone photo you already have.The Operator: How meaningful?The Translator: Honest answer —  it depends on the roof. Simple ranch house, four clean planes, no dormers? The AI gets you close. Within five percent on square footage, decent penetration count.  Complex Victorian with twelve planes, two dormers, and a chimney tucked in a corner? It's going to miss things.The Operator: It's always going to miss things. I still have to measure valleys and penetrations myself. My guys measure every penetration by hand because every one of them affects labor.The Translator: That's exactly right.  And I'm not telling you to stop doing that. W