BORN FROM GYPSUM.

REIMAGINED WITH ASH

We collaborate with nature to create materials that evolve, not expire.

Rumett mineral panels are made from gypsum and bio-ash. The surface arrives finished. No paint. No filler. No finishing step. Mount it, take it down, use it again.

For thousands of years, civilisations built their walls from pure minerals. The Pantheon. The hammams of Damascus. The walls of Jericho. They used what the earth gave them — gypsum, ash, stone — and they built things that lasted centuries.

Gypsum is a mineral that breathes. It absorbs moisture from the air and releases it when conditions change, regulating the climate of a room without mechanical help. It is hygroscopic, non-combustible, and as old as architecture itself.

What conventional plasterboard did was wrap it in paper — a layer that makes the material impossible to recycle. We replaced that paper with 22% bio-ash. What remains is a panel that is purer, stronger, and designed to go back into the world rather than into a skip.

“When the material stands
naked, 
it stands strongest.”

It breathes.
Hygroscopic by nature. The panel absorbs excess moisture and releases it as temperatures shift — balancing the air of the room around it. No coating. No treatment. The material does it on its own.
 
It absorbs sound.
No paper layer means no reflective surface. The open porous structure absorbs twice as much sound as standard drywall. Tested. Certified at Class B. Quieter rooms without additional acoustic treatment.
 
It doesn’t burn.
Gypsum is non-combustible. REI 60 fire resistance with one layer, no additional fireproofing. This was the question that started Rumett — asked in a refugee camp in Lebanon, in 2012. The answer was always in the mineral.
 
It comes back.
Screws, not adhesive. Off in minutes, intact. Reinstalled without loss of performance. Five full cycles documented. 100% recyclable at end of life.

MATERIAL PHILOSOPHY

We believe material is not neutral.

It carries weight, temperature, texture, silence.

Our panels are raw and mineral. They regulate humidity naturally. They can be repaired,repigmented, and reinstalled. They age with dignity.

VISION

A construction industry where
walls are assets, not waste. 

Where materials are harvested,
used, dismantled, and reused indefinitely.

CORE VALUES

Simplicity:
Built on simplicity.

Honesty:
Materialt ransparency.

Longevity:
Built to last generations.

Circularity:
Design for disassembly

GEOGRAPHIC PRESENCE

HQ:
Copenhagen, Denmark

Production:
Northern Lebanon

Markets:
Nordics & Middle East

Expansion:
Middle East rollout in progress

VAT: 43676997. Rumett ApS. Nattergalevej 6, 2400 København NV