Mod105 is using the durable MDF as panelling, windows and doors in its aluminium-framed structures.
Owner Paul Cameron said the company chose Medite Tricoya because of its environmental credentials and its longevity. He had a sample submerged in water for three weeks, then covered in snow, and there was no shrinkage or swelling.
"I’m excited about using it," he said.
Tricoya MDF is made from wood fibre modified by acetylation.
Mod105’s flatpack buildings can be transported on the roof rack of a car and assembled in an hour, using just one hand tool (demonstrated by the company’s You Tube video). Internal furniture secures to the frame using the same fixing as the structure, or friction.
Mod105 produces a single-skin version as well as a fully-insulated model with double glazing.
"It’s quite a new concept in outdoor rooms," said Mr Cameron.
He added that the building had a range of uses, including garden offices and mobile retail units.
"The only standard element we have is the components so we can build to any size," he said.