INVERTED ROOF ASSEMBLY

Stabilodrain® SD30

A modern urban courtyard with paved walkways, green grass patches, young trees, and landscaped flower beds, surrounded by multi-story apartment buildings with glass balconies.

The ideal assembly for driveways on inverted roofs

Create a recreational park or plaza on your building’s inverted roof – including driveways and parking areas.

Features:

  • Maximum compressive strength

  • Allows insulation to dry out

  • High drainage capacity

  • Designed for parking decks on inverted roofs

  • Can be used for intensive roof gardens

  • Durable protection for waterproofing membrane

Cross-section illustration comparing traditional paving with eco-friendly, permeable ground cover, showing paved walkway on the left and natural garden on the right.

System Buildup

  1. Hardsurfacing

  2. Bedding Material (≥ 150 mm)

  3. ZinCo Filter Sheet TG

  4. ZinCo Stabilodrain SD30

  5. ZinCo Diffusion Membrane TGV21

  6. Rigid Insulation

  7. Roof Structure & Waterproofing

Technical Data

  • Depth: ≥280 mm (11 ")

  • Water retention capacity: ≥ 135 L/m2

  • Saturated weight: ≥ 365 kg/m2 (75 psf)

  • Slope: 2-5 degrees

Guide Specifications
Data Sheets

Technical Drawings

Planning Guides
Modern urban courtyard with multi-story buildings, a tree, and landscaped greenery, featuring walkways and balconies.
Aerial view of a modern building with a green, flat, and sloped roof, surrounded by trees and residential houses in a suburban area under a partly cloudy sky.
house with a green living roof covered with various plants and flowers, with trees and a blue sky in the background