Structural interaction and indoor climate: hybrid construction

A DESIGA^® garden shed is based on a specially designed hybrid construction. This combines a durable HPL outer shell with a load-bearing wooden core. This combination of materials is based on principles of building physics: whilst the HPL provides weather protection, the internal wooden structure ensures structural rigidity and a stable indoor climate.

Acoustic damping instead of the ‘drum effect’

A key feature of this construction method is its acoustic performance. Compared to simple metal structures, where rainfall often produces loud resonance noises (the “drum effect”), the DESIGA^® system has sound-absorbing properties. The combination of the heavy-duty EPDM roofing membrane and the 19 mm three-layer spruce panel significantly dampens the impact energy of rain. This ensures a quiet atmosphere inside the building, which is particularly relevant when used as a workplace or workshop.

Stability through dead weight and anchoring

The building’s solidity is largely determined by its mass. An average DESIGA^® garden shed has a dead weight of over 800 kg. This high dead weight, combined with professional mechanical anchoring in the foundations, forms the basis for excellent stability. As a result, the structure is able to withstand even strong wind loads and storms without suffering any structural damage.

A natural indoor climate and protection of materials

Untreated spruce timber is deliberately used in the interior. Spruce has hygroscopic properties, meaning it acts as a natural moisture buffer. It is able to absorb moisture peaks in the indoor air and release it again in drier conditions. This buffering capacity helps prevent condensation and thus protects both the building structure and stored equipment or technical installations from corrosive influences and moisture.

By avoiding the use of chemical wood preservatives indoors, the natural characteristics of the material are preserved. This results in a neutral to slightly woody odour and ensures a pollutant-free environment (compliance with emission class E1). Pest resistance is achieved not through chemicals, but through structural measures: the dry indoor climate, together with the under-floor ventilation of the entire garden shed provided by adjustable feet, deprives wood-destroying organisms such as woodworm of the conditions necessary for their survival. The result is a permanently intact wooden structure achieved through purely physical prevention.