Independent, THERM-validated proof your windows, doors and façades comply.
Condensation and mould disputes land on whoever signed the design off. We model the actual window and interface to ISO 15099 — certifier-ready evidence, not a generic rating.
Not just U‑values — condensation, mould, embodied carbon, recyclability and weight, from one model.
Independent lab · ISO 15099 · our CFL solver is THERM-validated — 98.7% across 222 results
Which one are you?
Not sure which? Send us one window — we’ll model it free →
Or explore our case studies — starting with the interactive VCA TIRS study →
Who’s behind AFRC Lab
Hi, I’m Dave.
Window nerd, through and through — I’ve been fascinated by how glass and frames actually behave since 1998. From then right up until I started AFRC Lab, I was in it with the builders, the window and door makers, and the crews who install them — which taught me how often the number on paper and the window that gets installed are two very different things.
So I started AFRC Lab to close that gap. We model the real window — and the junction around it — and prove it stands up before it’s built. No black box, no generic rating. Just me, the lab, and numbers I’ll happily stand behind. Send me one window and I’ll model it free — I genuinely love this stuff.
Dave Morehouse · Founder, AFRC Lab