Maintenance and safety: proactive measures for the roof

A key feature of a high-quality garden shed is not only its durability under normal use, but also its safety in the event of unforeseen incidents. The DESIGA^® roof structure is designed to be easy to maintain and features built-in ‘safety buffers’ that protect the structure in the long term.

Accessibility and ease of maintenance

To enable the functionality of the drainage system and the condition of the roof surface to be checked, the roof is easily accessible for cleaning and maintenance work. This is particularly important in locations with a high volume of falling leaves, so that the roof drain can be regularly cleared of debris. The solid beam structure made of C24 solid structural timber provides the necessary structural safety, meaning the surface can be walked on without additional aids.

The maintenance required is minimal: for a pure EPDM roof without any additional structure, an annual visual inspection is sufficient. For gravel-covered roofs, we recommend checking for leaves in the autumn and inspecting the drainage. For green roofs, maintenance is limited to one inspection per year – the sedum plants are self-regulating and require neither watering nor fertiliser. In all cases, the following applies: there are no components prone to wear and tear, no seals that need replacing, and no mechanical parts that rust. Maintenance of a DESIGA® roof essentially consists of keeping the drainage system clear.

Safety margin provided by open construction

A key advantage of our design is the consistent avoidance of completely sealed, vapour-tight cavities in the roof and wall structure. Should moisture penetrate the substructure due to an exceptional event – such as a drain blocked by leaves and the resulting backflow – this does not pose a critical risk to a DESIGA® garden shed. As the wooden frame is exposed inside and in direct contact with the air in the room, any moisture that has penetrated can dry out immediately and without leaving any residue.

This is a fundamental difference from closed systems such as sandwich panels or fully insulated wall structures, in which moisture remains trapped and can lead to unnoticed mould growth or rot over months. With DESIGA®, the timber structure remains permanently healthy thanks to constant air circulation. This purely physical timber protection – prevention through design rather than chemicals – makes the use of timber preservatives unnecessary and ensures the structural integrity of the framework for decades.

The combination of a stable, walkable roof surface and a vapour-permeable timber frame construction minimises the risk of long-term damage. Your garden shed will even forgive maintenance intervals that are occasionally missed due to holidays or weather conditions – the structure reacts in a self-regulating manner to moisture influences, rather than trapping them.