Retention elements

Retention roof

• Reduction of drainage capacity into the sewer network
• Fast installation and easy maintenance
• Reduction of acquisition costs compared to other retention systems

Support & Retention Roof Designs

• Technical report of retention roof incl. calculationon the basis of information from the authorities concerned
• Drawing of the division of the retention roof surfaces
• Delivery and installation of retention elements
• Inspection and cleaning of installed retention elements

Proposal of a retention measure