Synthetic grass balcony layout

Transforming a balcony into a durable green space with Nidagreen panels

To create a synthetic grass balcony with effective drainage, Nidagreen® cellular panels were installed on a watertight slab.
This solution provides a stable, clean and comfortable surface, while creating a temporary rainwater storage layer, ideal for small urban outdoor spaces.

22 m2

developed surface

28 mm

panel thickness

2016

year of completion

Project Context and Challenges

Creating a pleasant and well-drained outdoor space on a watertight slab

Urban balconies must deal with:

lack of permeability,
water stagnation on waterproof slabs,
absence of natural soil,
the need for a low-maintenance green area.

The homeowner wanted to transform the balcony into a comfortable living area, while keeping the structure lightweight and perfectly drained.

Objectives

Ensure vertical and horizontal drainage of rainwater
Provide long-term stabilisation for the synthetic grass
Keep loads low on the existing slab
Guarantee a 100% permeable, lightweight and easy-to-install solution
Achieve an aesthetic, pleasant and comfortable surface

Solution Implemented with Nidaplast

Nidagreen®: permeable honeycomb panel for balconies and terraces

Nidagreen® panels, composed of 95% void, allow:

temporary storage of up to 24 L/m² of water (28 mm thickness)
horizontal diffusion of water through the Geoflow drainage layer below
a dry, stable and fully drained synthetic turf surface

Key advantages:

Lightweight and resistant (120 T/m² in compression)
100% permeable
Quick, easy installation with no heavy tools
Recyclable product
Comfortable and aesthetic walking surface

Technical Characteristics of the Installed Product

Panel size:

2500 x 1200 mm.

Panel height:

28 mm.

Permeability:

≥ 95 %.

Material:

100% recyclable polypropylene

Nidagreen

Nidagreen is an extruded polypropylene panel, covered on both sides with a non-woven geotextile (PET 25 g/m²). The honeycomb panel is specifically designed to be installed between the synthetic surface layer and the ground (synthetic turf, shock-absorbing poured layers, resin-bound gravel, etc.).

View product sheet

Installation Process

1. Sub-base preparation

Complete cleaning of the balcony.
Positioning of the Geoflow drainage layer and cutting it to fit the balcony outline.

2. Installing Nidagreen panels

Installation of Nidagreen® panels over Geoflow.
Cutting panels for perfect adjustment.
Connecting panels with ADgreen permeable adhesive.

3. Finishing

Installation of synthetic grass.
Use a permeable (micro-perforated) turf to allow rainwater to pass through.
The turf can be stapled along the edges to prevent lifting.

Results and Benefits Observed

Balcony transformed into a comfortable green area usable all year round
Optimal drainage: no stagnation, no moisture under the turf
Stable, durable surface with no settlement
Lightweight solution compatible with waterproof slabs