A durable and invisible solution for preserving an exceptional heritage site
As part of the landscaping project at Villa Cavrois in Croix (managed by the Monuments of France), Nidagravel® cellular gravel stabilisation panels were installed to stabilise 2,500 m² of gravel surfaces.
The objective was to provide pathways that are fully accessible, permeable and visually respectful of the site’s architectural identity, while improving PRM accessibility.
2500 m2
stabilised surface
nidagravel 130
gravel stabilisation panel
2013
year of construction
Project Context and Challenges
Stabilising gravel pathways in a historic site
Villa Cavrois features extensive outdoor areas where gravel paths had to remain aesthetic, permeable, and perfectly accessible, including for visitors with reduced mobility.
Key challenges identified:
- avoiding gravel sinking and surface irregularities,
- ensuring comfortable circulation for all users,
- maintaining a natural and lightweight visual appearance,
- guaranteeing long-term durability under repeated use.
Objectives Defined by the Project Owner
The specifications required:
- efficient gravel stabilisation over large areas,
- a PRM-compliant solution,
- fast and non-intrusive installation,
- full permeability to naturally manage rainwater,
- a discreet material that preserves the site’s architectural value.
Solution Implemented with Nidaplast
Why choose Nidagravel 130?
Nidagravel® panels are made of polypropylene and include an integrated porous geotextile on the underside to prevent gravel migration beneath the sheets.
Key performance features:
- 100% permeable: natural rainwater infiltration
- High resistance: up to 300 t/m² when filled
- Lightweight product, easy to cut and install
- Inert material: resistant to ageing, chemicals, microorganisms and rodents
- Suitable for PRM-compliant installations
Technical Characteristics of the Installed Product
Panel dimensions:
2400 x 1200 mm.
Cell height:
30 mm.
Permeability:
100 %.
Material:
100% recyclable polypropylene
Nidagravel 130-140
Nidagravel 130/140 panels are the original format (2400 x 1200 mm) for gravel stabilization. Their large size allows for quick and uniform installation, making them ideal for medium to large landscaping projects.
View product sheetInstallation Process
1. Sub-base preparation
Excavation and compaction of a draining sub-base. Application of a levelling layer.
2. Laying the Nidagravel panels
Installation of gravel stabilisation sheets in crossed joints, without fixing or anchoring.
3. Filling and finishing
Fill the cells with non-calcareous gravel (6/8 or 8/10 mm). Compact to lock the gravel into the cells. Finish with 1–2 cm of gravel above the panels.
Results and Benefits Observed
Improved accessibility for all visitors
Fully permeable surface, with no standing water
Natural landscape integration: only the gravel remains visible
