• Ensures excess water is drained away
• Optimum moisture levels without swamping or ponding
• Provides protection for the waterproofing membrane.

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)

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

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. 

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).

The alwitra^® soil vent pipe forms the upper end of vent pipes protruding over low slope roofs with waterproofing of any constructional type up to DN 125 (OD 125).

• The soil vent pipe consisting of one single pipe extends over the roof build-up without any joints and is connected to the downpipe DN 125 (OD 125) and DN 100 (OD 110) below the roof structure by means of the included reducer.
• A corresponding reducer (125/75) is available for downpipes DN 70 (OD 75)
• The connecting flange can be made with EVALON®

The alwitra^® refurbishment vent 160 is made of CFC free PUR integral foam.

• At the factory, an EVALON^®® sealing ring is foamed into the welding flange. The sealing ring ensures permanently reliable flashing against the new roof waterproofing.
• To this end, a prefabricated EVALON®  flashing collar is homogeneously welded to the sealing ring and the adjacent roofing membrane in the same way as the seam connection of the field membranes.

alwitra^® cold roof vents can be welded directly to the corresponding roof waterproofing without any additional materials.

• The vent cowl, together with the weather cap, provides rainproof protection of the vent pipe
• At the lower end of the vent, a drip pan will collect any condensate, which will eventually evaporate. This is to prevent or reduce moisture penetration of the thermal insulation

High-quality maintenance walkway tiles for safe maintenance walkways on the roof

• Textured, anti-slip surface
• Facilitates inspections and maintenance
• Higher perforation protection
• UV Stable

Metal sheets or preformed profiles coated in EVA material

• Sheets, standard drip edge or water check profiles
• Allows for homogeneous welding
• Compatible with EVALON^® single ply membranes
• Available in a variety of colours

Unbacked EVALON^® single ply membrane, preformed into corners, flanges & sleeves

• Quick and convenient
• For corners and penetrations
• Variety of sizes
• Various colours