The GC and the sub negotiated away a contract term that skirts your install guidelines while your rep was 30 feet away with no idea and no playbook.
It happens in the trailer, in the tenth minute of a schedule meeting. Something about substrate prep, or a weather window, or which trade owns the joint. The GC needs the week back. The sub needs the RFI. They agree, and the agreement moves outside your written instructions with you none the wiser.
Why They Don't Tell Your Rep
Even when the rep is on site, nobody tells her or him. To the GC and sub, it's a contract conversation, not a product conversation.
Eighteen months later, when there's water in the building, it's a product conversation.
The Question I Never Trained Reps to Ask
I trained field and sales reps to walk walls for over a decade, but I never trained one to ask the super what changed in the contract since the last visit. That question belongs in the site visit. It's a gap that even experienced sales reps who avoid job sites don't know they're missing.
You can walk every wall on the project and still miss the conversation that puts your warranty at risk.
Ask to Be in the Conversation
The deal that matters most happens between the GC and the sub. Your rep can be thirty feet away and still be outside it. Contract changes aren't flagged as product issues until they become warranty claims.
Understanding how subs get blindsided by contract risk is the first step. But the fix is simpler than a training overhaul.
Add one question to every site visit: What changed in the contract since I was here last? That's how you stop walking walls while the warranty walks out the door.