With a small equipment store, it is easy to assume that a thin, cheap roof panel will do in any situation. Yet even a simple roof slope requires proper supports, adequate fall and tight joints. Second-grade material must be assessed according to the type of deviation. A thickness of 40 mm and a low price do not replace information about the specific product and the conditions under which the roof will work. A shed for dry kayaks or folding tables has different requirements from a store for moisture-sensitive materials. Check whether the interior is only meant to shelter from precipitation or to maintain a specific temperature. Planned later conversion into a workshop should also be taken into account from the outset, rather than assuming that insulation can easily be added after installation.

Garages increasingly house a workbench, sports equipment and items that need a dry place. The roof panel thickness should therefore be matched to the building's full function. A different choice may make sense for parking alone than for daily work. The roof must also be checked for loads, water and moisture from the vehicle. For a garage used as a workshop, note the heating time and the expected temperature. If only a car is kept inside, efficient air exchange and protection of stored items may be the priority. If several hours a day are spent at the bench, the comfort of the entire work area matters.