Advantages
For rainmakers and the water shy
Flat roof drainage
Ready for the next rain
Torrential rain, storms and flash floods are unlikely to become less frequent in future – so be clever and think ahead: with alwitra flat roof drainage systems, you can take the initiative and prevent problems from arising in the first place. Rainwater outlets, emergency outlets and water spouts from alwitra keep both feet and heads dry under any flat roof – for years to come, even when it’s raining cats and dogs.
Matched: to the special requirements of roof and emergency outlets for low slope roofs
Efficient: optimised inlet geometry providing both a high discharge rate and a low ponding height
Resistant: made of highly impact-resistant polypropylene (PP)
Comprehensive: a large product range for EVALON® and EVALASTIC®.
Flexible: secure, professional flashing against EVALON® and EVALASTIC® and almost any other vapour control sheets
Safe: tested by TÜV Rheinland LGA Products GmbH according to DIN EN 1253
The alwitra flat roof drainage system consists of
Overview of alwitra rainwater and emergency outlets
| vertical outlet also available with heating 230V AC | horizontal outlet also available with heating 230V AC | ||||
| DN 70 (OD 75) | DN 100 / DN 125 (OD 110 / OD 125) | DN150 (OD 160) | DN70 / DN 100 (OD 75 / OD 110) | DN125 (OD 125) | DN 70 (OD 75) |
| S 110/125, SH 110/125 | S 110/125, SH 110/125 | S 110/125, SH 110/125 | W 75/110, WH 75/110 | W 125, WH 125 | parapet outlet W75 |
| DN 125 (OD 125) + reducer 125/75 | DN 125 (OD 125) incl. reducer to DN 100 (OD 110) | DN 125 (OD 125) + transition piece 125/160 | DN 70 (OD 75) incl. transition piece to DN 100 (OD 110) | DN 125 (OD 125) | DN 70 (OD 75) |
| Extension pieces (suitable for all alwitra roof outlets) | |||||
| Extension piece 200 | Extension piece 400 | Extension piece SL | Extension piece UKD 200 | Extension piece UKD 400 | |
| for insulation thicknesses from 50 - 200 mm | for insulation thicknesses from 50 - 400 mm | for insulation thicknesses according to customer specifications | for insulation thicknesses in inverted roofs from 50 - 200 mm | for insulation thickness in inverted roof from 200 - 400 mm | |
| Flashing collar (suitable for all alwitra roof drains and extension elements) | |||||
| Flashing collar EVALON light grey | Flashing collar EVALON white | Flashing collar EVALON slate grey | Flashing collar EVALON various colours (on request) | Flashing collar EVALASTIC grey | Flashing collar bituminous sheet |
| Thickness 1.5 mm, Ø 480 mm | Thickness 1.5 mm, Ø 480 mm | Thickness 1.5 mm, Ø 480 mm | Thickness 1.5 mm, Ø 480 mm | Thickness 1.5 mm, Ø 480 mm | Thickness 4.0 mm, Ø 500 mm |
| Accessories (suitable for all alwitra rainwater outlets and extension pieces) | |||||
| Emergency outlet 40 | Emergency outlet 40 | Emergency outlet 100 | Terrace grate | ||
| For extending all alwitra rainwater outlets and extension pieces with a ponding height of 20-40 mm | For extending all alwitra rainwater outlets and extension pieces with a ponding height of 20-100 mm | For extending all alwitra rainwater outlets and extension pieces with a ponding height according to customer specification | made of aluminum, height adjustable | ||