Roof Drainage
Rainwater Outlets
![alwitra Rainwater Outlet Vertical](https://www.alwitra.co.uk/media/images/uploaded/products/23/alwitra-rainwater-outlet-vertical.114.full.jpg)
alwitra® Rainwater Outlet Vertical
Vertical, 100 or 125mm, with rigid polyurethane body and EVALON® flange, complete with screw ring and flat grating
- Made of highly impact-resistant polypropylene (PP)
- Pipes DN 125 (OD 125 mm) can be connected directly, pipes DN 100 (OD 110 mm) using the included reducer 125/110
- A combined leaf guard/gravel stop is included
![alwitra Rainwater Outlet Horizontal](https://www.alwitra.co.uk/media/images/uploaded/products/24/alwitra-rainwater-outlet-horizontal.115.full.jpg)
alwitra® Rainwater Outlet Horizontal
Horizontal, rigid polyurethane body with EVALON® flange, 125mm, complete with screw ring and flat grating
- Made of highly impact-resistant polypropylene (PP)
- On classic warm roofs, all standard vapour barriers can be flashed directly.
- Corresponding extension pieces are available in various lengths, depending on the thermal insulation thickness
![Refurbishment Outlets](https://www.alwitra.co.uk/media/images/uploaded/products/26/refurbishment-outlets.116.full.jpg)
Refurbishment Outlets
The two-part system consisting of a custom-fit refurbishment plate.
- The plate is centrically arranged over the existing rainwater outlet and flashed against the existing waterproofing without backflow.
- The drainage element itself is then simply inserted into the refurbishment plate.
- Flashing against the new waterproofing is carried out either with connecting flange and screw ring (refurbishment rainwater outlet 125) or with factory fitted connecting flange (refurbishment rainwater outlet 75, 110).
![Emergency Outlet](https://www.alwitra.co.uk/media/images/uploaded/products/25/emergency-outlet.117.full.jpg)
Emergency Outlet
Mandatory emergency drainage systems for flat roofs with internal drainage.
- This applies also to refurbishment. alwitra® rainwater outlets and extension pieces have been designed to meet this requirement
- Available in different versions varying only in ponding height: • ponding height of 20 - 40 mm for emergency outlet socket 40 • ponding height of 20 - 100 mm for emergency outlet socket 100
- Can be converted into emergency outlets with high performance and a specified ponding height.
![Water Spouts](https://www.alwitra.co.uk/media/images/uploaded/products/28/water-spouts.118.full.jpg)
Water Spouts
Due to the flangeless design, alwitra® water spouts are particularly suitable for difficult and/or confined installation conditions.
- They are made of rigid PVC and, depending on the version, are equipped either with a welding flange for EVALON®® waterproofing membranes or with a factory-fitted flashing collar made of EVALON®®.
- Along with the alwitra® water spouts for pipes with various diameters, rectangular versions are also available
![Terrace Grate](https://www.alwitra.co.uk/media/images/uploaded/products/27/terrace-grate.119.full.jpg)
Terrace Grate
The height-adjustable alwitra® terrace grate made of stainless aluminium
- The grate is installed in place of the leaf guard / gravel stop, ensuring drainage at paving and waterproofing level.
- Made from aluminium, with locating ring made of polypropylene (PP)