A basic spray foam depth gauge is inexpensive and easy to find — and it's a genuinely useful tool. But there's a meaningful gap between "I checked the depth in one spot" and a documented thickness audit. Here's the real difference.
A handheld depth gauge, pushed into the foam at a single point, gives you a reasonably accurate thickness reading at that exact spot. That's useful information — but it's one data point in what's usually a much larger treated area.
A documented thickness audit samples multiple locations throughout the treated area — not just the easiest-to-reach spot — and compares each measurement against the specification for the application. The result is a written record showing where coverage meets spec, where it falls short, and by how much.
If you're simply curious about your own attic's coverage with no dispute, sale, or documentation need involved, a basic depth gauge reading is a reasonable starting point.
If you're buying or selling a home, resolving a dispute with an installer, or need evidence that will hold up outside a casual conversation, a documented thickness audit — with multiple sample points, photos, and a written report — is the tool built for that job.
Spray Foam Testing Services performs documented, multi-point thickness testing — reach out to schedule an audit for your property.
No installation. No referrals. No upselling.