H180mm extension with flange for roof inlets of the HL62, HL64, HL69 series HL350.0

Roof drain extension – increased functionality and durability

This element is an extension with a height of 180 mm, designed for mounting on roof drain series HL62, HL64 and HL69. Its main task is to raise the outflow level, which is particularly important in the case of inverted or green roofs, where effective water drainage is essential.

The construction with a collar allows for a tight connection with the foil or geotextile, ensuring the integrity of the waterproofing.

This extension is a key element of the roof drainage system, allowing it to be adapted to specific conditions and the arrangement of structural layers. It is compatible not only with the mentioned series of drains, but also with other components of the Hutterer & Lechner system, such as supporting and drainage rings, which ensures flexibility and the possibility of creating optimal solutions.

Construction and application

Made of polypropylene (PP), the extension is characterized by high resistance to weather conditions and mechanical loads. The sealing collar ensures a tight connection with the roof waterproofing, minimizing the risk of leaks. The height of 180 mm allows the outflow level to be adjusted to specific project needs.

The extension is used in:

• Inverted roofs: where the insulation layer is above the supporting structure.
• Green roofs: where the presence of vegetation requires effective water drainage.
• Modernization of existing installations: as an element allowing to raise the outflow level in existing drainage systems.
• New investments: as an integral part of a comprehensive flat roof drainage system.

Product advantages

• Versatility: Compatible with various series of Hutterer & Lechner roof drains (HL62, HL64, HL69) and other system components.
• Tightness: The sealing collar ensures a secure connection with the foil or geotextile, eliminating the risk of leaks.
• Durability: Made of high-quality polypropylene (PP), resistant to weather conditions and mechanical loads.
• Flexibility: Possibility of combining with supporting and drainage rings for optimal adaptation to specific project needs.
• Easy installation: Simple construction facilitates and speeds up the installation process.
• Solution for specialized roofs: ideally suited for inverted and green roofs, where efficient drainage is key to the long-term protection of the building.

Additionally, it is worth mentioning the possibility of using supporting rings (HL062B.3E) or drainage rings (HL160) to expand the range of compatibility of the extension with other elements of the roof drainage system. This allows you to create a coherent and effective installation, tailored to the individual requirements of each project.