Retention element

Retention roof

•  Reduction of drainage capacity into the sewer network

• Fast installation and easy maintenance

•  Reduction of acquisition costs compared to other retention systems

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Support & Retention Roof Designs

•  Technical report of retention roof incl. calculation on 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

• For design suggestion, ask at technical department TOPWET

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