Industries

Industry

Construction & Insulation & architecture

Lightweight aggregates and bonded screeds for retrofits and lower-carbon new builds.

Cork enters construction projects where existing structures cannot carry additional dead load, where embodied carbon is on the specification, or where heritage substrates require a material that breathes.

Construction projects rarely fail on a single material choice. They fail on accumulated dead load, on a thermal layer that compresses out of spec in five years, or on a moisture detail that allows mould to colonise a cavity. Cork answers each of those failure modes at once.

For heritage retrofits, we supply cork grain that pours into irregular cavities, conforms to old masonry, and allows the substrate to breathe. For new builds chasing low embodied carbon, the same material enters the concrete mix as a partial aggregate substitute.

Specifiers value the documentation. Every batch we ship carries traceability back to the cork forest and the harvest cycle. EPDs are available on request for projects pursuing BREEAM, LEED or Level(s) certification.

Applications

Where cork enters the line.

Retrofit thermal layers

Coarse cork grain at 70 kg/m³ replaces screed-and-foam systems and removes up to 100 kg/m² of dead load.

Lightweight aggregate concrete

Granulated cork as a partial aggregate substitute for screeds and non-structural pours.

Loose-fill cavity insulation

Free-flowing cork grain for timber-frame and masonry cavity applications.

Typical specifications

Material envelope.

Bulk density
60 – 90 kg/m³
Compressive strength
Up to 0.3 MPa at 10% strain
Moisture uptake
<4% by weight (immersion)
Origin
Portuguese cork forest, FSC traceable

Products specified for this sector

In production

Selected case studies.