The slight conical shape enables fast and simple installation in rain water drains. They have a flange with holes to improve adhesion to bituminous membranes. They have a series of rings on the shank which act as a drain-trap between the connector and the rain water drain. The resilience of the material used in its construction guarantees a long term seal.
The shank in the upper section has a series of internal serrations which ensure that the leaf-excluder or gravel-excluder is fixed tightly to the connector.
Resistant to deterioration by the sun, ozone and other agents or chemicals normally found in the atmosphere. They have excellent flexibility even at low temperatures. The mechanical properties are maintained in the long term. they are compatible with APP and SBS prefabricated bituminous felts and bituminous coats.
A sandwich installation is recommended. To improve adhesion of the connector it should be prepared with a thin coat of primer.
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