Green Roof Drainage

Many flat roofs are already used as green roofs. The challenge in drainage is keeping soil and gravel away from the drain and ensuring water inflow.

LORO offers special attachments for flat roof drains and parapet drains.

Inspection Chamber for Flat Roof Drains in Green Roofs

The specially developed inspection chamber for LORO-X DRAINLET flat roof drains secures water inflow from the soil layer through its elongated openings on the sides. Access to the flat roof drain for maintenance and cleaning is ensured via the removable cover.

Parapet Drainage in Green Roofs with Screen Unit

The screen unit with special hole pattern for LORO-X RAINSTAR parapet drains with gravity flow is the space-saving option for drains directly at the parapet. The screen unit is mounted on the drain flange instead of the LORO-X hood. Note: The screen unit cannot be used for siphonic flow!

For the drainage of green roofs as warm roofs, the LORO-X RAINSTAR parapet drainage of Series 79 with lowered pipe and the practical parapet upstand as 90 or 45 degree clamping flange for bitumen or plastic membranes shown in the application example is suitable.

The matching VARIOFIT retention units for LORO-X RAINSTAR drains can be mounted directly or added to the body later.

The retention units fit on bodies of the following series:

• RAINSTAR retention units

• Series 79 RAINSTAR with lowered pipe
• Series 89 RAINSTAR with low installation depth
• Series 88 RAINSTAR Distant without upstand

For the drainage of green roofs as warm roofs, the LORO-X DRAINLET flat roof drainage of Series 84 with clamping flange for bitumen or plastic membranes shown in the application example is suitable. For warm roofs, the two-part variant is used to integrate the waterproofing membrane and the vapor barrier.

• Series 84 DRAINLET Complete unit with retention pipe (DN 100)

Alternatively, VARIOFIT retention units for LORO-X DRAINLET drains can be added to the body later:

• DRAINLET retention units (DN 50, 70, 100 and 125)

• Series 84 DRAINLET with standard dome

For the drainage of green roofs as cold roofs, the LORO-X DRAINLET flat roof drainage of Series 84 with clamping flange for bitumen or plastic membranes shown in the application example is suitable. For cold roofs, the one-part variant is used.

• Series 84 DRAINLET Complete unit with retention pipe (DN 100)

Alternatively, VARIOFIT retention units for LORO-X DRAINLET drains can be added to the body later:

• DRAINLET retention units (DN 50, 70, 100 and 125)

• Series 84 DRAINLET with standard dome

For the drainage of green roofs as inverted roofs, the LORO-X DRAINLET flat roof drainage of Series 84 with clamping flange for bitumen or plastic membranes shown in the application example is suitable. As with cold roofs, the one-part variant is also used for inverted roofs.

• Series 84 DRAINLET Complete unit with retention pipe (DN 100)

Alternatively, VARIOFIT retention units for LORO-X DRAINLET drains can be added to the body later:

• DRAINLET retention units (DN 50, 70, 100 and 125)

• Series 84 DRAINLET with standard dome