When the hill is burning, the house is not.
Lexstone is a mineral cladding panel made from diatomaceous earth. There is nothing in it that wants to burn. It installs like wood and stands like stone.
Proof, not adjectives.
Every claim links to a test report or a video you can watch. Until a report is in hand, the number says pending.
Torch test · 2:00Open flame on a bare panel. Back face cool enough to touch.
ASTM E84Flame spread report · pending
WaterNo cellulose. Nothing to swell, rot or mould.
InstallCircular saw. Siding nails.
At the yardAsk for it by name.
Every claim, with its receipt.
Every claim on this site carries its test status. When a report is issued it is published here the same day, and the label changes. Not before.
Non-combustibilityASTM E136
pendingFlame spreadASTM E84 · Class A target
pendingWater absorptionFreeze-thaw and immersion
testingInstallation guideFastening schedule, cutting, finishing
availableFree samplesTwo lap pieces and a panel offcut
request