Sheathing that sequesters as it shields
The building envelope is the biggest surface you own. Making it a carbon sink instead of a carbon cost.
Think about how much area an envelope actually covers: every wall, every floor plate, every roof deck, wrapped continuously around the building. In a conventional project all of that surface carries embodied carbon — the sheathing, the cladding, the boards were all made in processes that emitted. Carboweave inverts the sign. The same surface, specified in our laminates, becomes the largest carbon sink on the site.
One panel, three jobs
Carboweave earns its place on the envelope by doing more than store carbon. Each panel is a genuine structural and building-physics element:
- Shielding. As a rainscreen or sheathing layer it takes wind and weather, with low water uptake and a stable, matte finish.
- Bracing. The Z2 and ZX plates act as structural diaphragms and shear panels, carrying racking load back to the frame.
- Sequestering. Every square metre installed holds fixed carbon captured from an industrial flue stream.
The greenest surface in the building is the one you were going to build anyway — if it's grown.
Detailing for architects
Carboweave ships in panels from 9 mm rainscreen up to 90 mm structural plate, in formats sized for standard façade grids. It cuts and routs cleanly with carbide tooling, takes a concealed clip or an exposed-fastener detail, and holds crisp reveals because the laminate is dimensionally stable across humidity swings. Because it's light — around 1.0–1.4 g/cm³ — panels can run larger between supports, which means fewer joints and a quieter elevation.
What it does to the carbon report
Envelope area is large, so the carbon effect compounds. Cladding and sheathing a mid-rise in Carboweave can move several hundred tons of CO₂ from the emitted column to the sequestered column — often enough on its own to swing a project's structural carbon balance negative. Combined with a Chitospan frame and Osseocrete foundations, the whole building becomes a sink.
The chemistry behind those numbers — how flue gas becomes fiber in the first place — is in Turning flue gas into fiber.