Field notes from the lab.
Plain-English thinking on window, door and façade compliance. What the rating on paper misses, what the NCC now actually asks for, and how to prove the real building stands up — before it's built, not after handover.
OPTISEALED: a window install you can actually prove.
Most installs are done by habit, sealed ad-hoc and never documented. OPTISEALED is an independent, product-neutral method — map, train, certify and verify the sealed interface — so the install becomes repeatable and defensible.
Read the piece →In the works
- 02 The window you specify isn't the window that gets installed Soon
- 03 Condensation stopped being a callback. It's now a compliance failure Soon
- 04 Mould isn't a cleaning problem any more. It's a liability Soon
- 05 A window's performance isn't fixed until it's in the wall Soon
- 06 fRsi, Mould Index and TIRS: what each one actually proves Soon
- 07 A window's embodied carbon isn't one number. Here's why it moves Soon
- 08 Recyclable isn't recycled: what a window's end-of-life number really says Soon
Send us one window — we'll model it free.
Pick one window you've already got a rating for. We'll model the actual system, as installed, to ISO 15099 and send back the full picture — U-value, SHGC, Tvis, a condensation screen and more — so you can compare the number on paper with the window you're actually building.
Start with one window →