English (beta) · translation in progress — some pages still show the Dutch source.
Dakbedekking en waterdichting

Dakbedekking dakkapel

The flat roof of a dormer is almost always fitted with a watertight roofing material. EPDM, bitumen, and synthetic foils like PVC or TPO are the most commonly applied systems.

Hoofdgids · 14 min lezenDakkapel waterdicht maken: dakbedekking en aansluitingen
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SystemLifespan (indication)Properties
EPDM (rubber)30–50 yearsElastic, seamless on small roofs
Bitumen (APP/SBS)20–30 yearsRobust, applied in layers
PVC / TPO25–30 yearsLightweight, welded