Overflow ring - EPDM
A overflow ring is installed when the roof drain is to be used for safety drainage.
This EPDM rubber overflow ring can be adjusted in heights from 25 to 75 mm by cutting during installation, depending on the desired level of the safety overflow.
Effective solution for safety drainage
When the Danish weather shows its most extreme side and large volumes of rainwater must be managed efficiently on flat roofs, having a reliable safety drainage solution is crucial. A overflow ring made of EPDM rubber has been developed specifically for this purpose. It is installed in connection with roof outlets when these are intended to function as safety overflows – ensuring that the roof surface is not overloaded during extreme rainfall.
The overflow ring is designed to integrate seamlessly with JUAL’s other roof drainage solutions – including roof outlets, extension pieces, and safety outlets. It forms a natural part of a well-coordinated drainage system, where all components work together to protect the building from water damage and overloading.
Adjustable height – Flexible solution
JUAL’s overflow ring in EPDM rubber is height-adjustable from 25 to 75 mm, which is achieved by shortening the ring during installation. This allows for flexible and easy adjustment to the desired safety overflow level, making it possible to tailor the solution to the specific project. The height is easily adjusted by cutting with a sharp knife, ensuring a quick and precise installation.
A overflow ring delays drainage by raising the level at which water begins to flow into the roof outlet. This allows the primary drainage system to handle normal rainfall, while the safety overflow is only activated in the event of water buildup – that is, during unusually large amounts of precipitation. It is an essential component of modern roof drainage systems, where safety and capacity control are key priorities.
Why choose a overflow ring made of EPDM?
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber with outstanding properties:
- High resistance to UV radiation and ozone
- Long lifespan in harsh weather conditions
- Flexible and pliable – even at low temperatures
- Chemically resistant and unaffected by rainwater and pollution
Choosing EPDM as the material ensures a durable and robust solution that performs reliably for many years without the need for maintenance.
