Other options: rigid framework constructed from timber or UPM ProFi Support Rails.
The joists must be connected to each other with L brackets for example.
If building height is limited, UPM ProFi Support Rail Small can be used and interconnected as well (e.g. by using L-bracket “UPM ProFi Fence Large Fastening Angle Kit”).
Please note that UPM ProFi Support Rails must only be installed on hard flat surfaces. Any raised
deck must be built on UPM ProFi Alu Support Rail Large or timber frame (hardwood , durability class 1).
Additional weighting can be positioned if necessary: Attach the substructure onto concrete slabs
or at limited building height fix metal sheets on the support rails and place concrete slabs on it.
Please always note particular local conditions and ensure that you meet the requirements of the local building regulations.