Permatec Intensive Green Roof System

Lightweight green roof systems, usually incorporating sedum mats or sedum plug plants and minimal growing medium (concrete, metal or composite decks).

  1. Concrete deck primed with Permatec Primer
  2. 2 coats of Permatec Anti-Root incorporating Permaflash-R reinforcement
  3. Permaguard-F protection layer
  4. Rigid board insulation
  5. Water control layer
  6. Drainage/moisture retention layer
  7. Growing Medium
  8. Shrubs and plant finishes
20 Year System Guarantee
CodeMark CMNZ70010
Permatec Intensive Green Roof System

Substrate preparation
Ensure the surface of the substrate (concrete, plywood, calcium silicate board, metal/insulation composite, etc.) is properly prepared to accommodate the Permatec fully bonded system. Detail joints, cracks, or interfaces between different substrate materials according to Permatec Anti-Root Standard Drawings and Masterspec 4414AP specification.

Membrane application
Using a suitable spreader or squeegee, apply the first coat of hot Permatec Anti-Root compound to the prepared substrate with a nominal thickness of 3mm. While the Permatec Anti-Root compound is still hot, brush the Permaflash-R polyester reinforcement into it. Ensure all Permaflash-R laps are at least 75mm wide and fully sealed with the Permatec Anti-Root compound. Apply the second coat in the same manner, ensuring complete coverage of Permaflash-R with a nominal coating thickness of 3mm. Finally, protect the second coat of Permatec Anti-Root.

Permaguard-F, a sand surfaced bitumen membrane, serves as the standard protection layer. Apply it directly to the second coat of Permatec Anti-Root while it is hot and tacky. This layer is used on the main horizontal area and will be covered with various system components such as insulation, separation layer, drainage/moisture retention layer, growing medium, and soft landscaping. Permaguard-F is also utilized on unexposed detail items. Ensure quick rolling of Permaguard-F into the hot Permatec Anti-Root, with at least 75mm laps sealed using hot Permatec Anti-Root compound.

For exposed upstand details, employ Permaguard-M, a slate surfaced bitumen membrane. Apply it to the second coat of Permatec using controlled torch application, with minimum 75mm laps that are fully sealed.

Properly detail rainwater outlets and penetrations in the roof waterproofing system, following Permatec Standard Drawings and Masterspec 4414AP specification.

System components
A standard Permatec Anti-Root intensive roof system includes a range of components: insulation, water control layer, drainage/moisture retention layer, growing medium to the depth specified by landscape architects, and plants, trees, and grasses as per landscape architect requirements


Neuchâtel Permatec Standard Detail Drawings

Permatec Intensive Green Roof System Drawings