Frequently Asked Questions

Ideal for laying create tiled, ceramic or paved terraces, the Cleman® self-levelling 80/130 riser pedestal can be used to correct gradients of up to 5% on uneven ground. Its height adjustability provides greater flexibility for adapting terrace structures to project site constraints and the height of terrace required.

The Cleman® adjustable 40/55 riser pedestal is used to create tiled, ceramic or paved terraces for pedestrian use. It offers 3 adjustment options: pre-setting using the driver bit, manual setting using the screw adjuster, and final adjustment using the special adjustment wrench, all of which enables an extremely precise level of height adjustment. It offers not only fast and structurally stable installation, but also optimised side cladding facilitated by the 2 supports integrated into the base flange. This riser pedestal is compatible with self-supporting paving compliant with French classification T7, T11, or F+. It is not suitable for use with the paved side finishing plate.

Polyethylene zone markers are designed to fit Greenplac, Urbangravel and Urbanit stabilisation modules. They are used to create dividing lines or surface signage, and simplify the process of marking out driveways, footpaths, pedestrian-only and traffic-only areas. They are frost and UV resistant.

The Jouplast® Elevo riser pedestal for metal posts is designed to create natural timber or composite decking on sloping ground and for extending existing decking. It requires no site preparation and is inserted directly onto a square metal post (not supplied) to provide a stable and height-adjustable solution.

Stabilising spacers are inserted between paving slabs as they are laid. They can also be used in combination as intersection spacers, depending on the configuration of your installation. Once installation is complete, the spacers can be removed for a sleek final finish.

The Essentiel 2.5% slope corrector is designed for use with Essentiel adjustable riser pedestals at least 40 mm high. It is not compatible with certain models, including Essentiel standard adjustable paving riser pedestals HD10, HD 8/20 and HD 20/30, and Essentiel HL 10 and HL 20/30 adjustable joist support riser pedestals. Prior to installation, we recommend checking riser pedestal compatibility to ensure optimum results.

The MODULESCA® connector kit is designed to join MODULESCA® components together side by side, so you can create a new set of garden steps or extend existing steps to the required width. It uses a connector pin and clip to link two MODULESCA® modules or steps together.

For the use of our Alveplac® stabilizing plate, you do not need to purchase a geotextile as it is directly integrated into the product through an injection welding process. This ensures that the gravel stays in place and prevents the growth of weeds brought by birds.

There are different types of garden edging. Here are a few options:

• Natural stone edging: durable and sturdy, providing a natural, pure aesthetic.
• Plastic edging: allows for light, easy-to-move contours.
• Metal edging: modern and attractive, allowing for a sleek design.
• Concrete edging: this is sturdy but less modern than other types. It can look a little imposing.
• Wooden edging: this is easy to install and can be made from recycled materials. It requires regular maintenance to ensure the wood lasts.
• Composite edging: this is very durable and requires very little maintenance.

There are various types of garden edging available. Here are some options:

• Natural stone edging: Durable and sturdy, it offers a pure and natural aesthetic.
• Plastic edging: Lightweight and easy to move, ideal for flexible layouts.
• Metal edging: Modern and stylish, it allows for clean and minimalist landscaping.
• Concrete edging: Strong and solid, though less modern and somewhat bulky in appearance.
• Wood edging: Easy to install and can be made from reclaimed materials. However, it requires regular maintenance to ensure longevity.
• Composite edging: Highly resistant and requires very little maintenance.
  Each type of edging provides a unique look, so the choice should be based on the specific project and the preferences of the person requesting the work.

Aluminium joists offer many advantages that wood does not. Aluminium has the following performance characteristics:

First and foremost: durability over time. Aluminium structures are rot-proof, which makes them much more durable than wood.

Our aluminium joists are treated against corrosion to withstand humidity and even the salty climate found near swimming pools or the seaside. This is not the case with wood.

Jouplast® aluminium decking joists are much lighter to transport and install. Each joist measures 2.4 m and weighs 2.32 kg. In general, a pine joist of the same dimensions weighs between 3.5 and 4 kg, depending on the type of wood and its moisture content. This means that when handling joists on a building site, wooden joists are heavier than aluminium joists. This poses musculoskeletal risks that should not be overlooked.

If you are looking for a durable, easy-to-maintain solution that offers great stability, aluminium joists are an excellent choice. However, if you prefer a more economical option and appreciate the natural aesthetics of wood for decking boards, wooden decking joists may be more suitable, provided you are prepared to carry out regular maintenance.

It is entirely possible to install the pedestals on uneven ground with proper ground preparation. It also works on existing concrete slabs, and it is very convenient to be able to build on an existing installation without any difficulty.

Modular wooden or composite staircase:

Wooden staircases require regular cleaning with a soft brush and soapy water to remove debris and dirt.

A fungicide and insecticide treatment can be applied to prevent mould and insects.

Modular staircases covered with paving:

It is recommended that the covering be cleaned with a soft wire brush to remove moss stains.

A water-repellent product can be applied to protect against moisture.

All our slabs can support weights that are perfectly suited to traffic:

• Alveplac® and Greenplac® can support up to 600 t/m² when filled with gravel or grass.
• Urbangravel® can support up to 800 t/m² when filled with gravel.
• The entire URBANIT® range, designed for heavier traffic, can support up to 1000 t/m² with grass, gravel or paving stones.

The mechanical strength of our slabs is the fundamental criterion in our development process to ensure soil stability.

The geotextile separates the distinct sub-layers of the soil. This makes it possible to separate sand from aggregate, for example. The geotextile membrane also prevents weeds from growing in the gaps between the gravel.

Jouplast® snappable 5mm flat packers are useful for a broad range of indoor and outdoor joinery projects: packing all types of timber flooring from decking to boarded floors, fitting and adjusting joinery (doors, windows, cladding, panelling, furniture), fitting and adjusting joinery (doors, windows, cladding, panelling, furniture, etc.), correcting  surface unevenness, optimal spacing and ventilation of timber structures, etc. Their great strength and modular design make these packers the ideal solution for all construction projects requiring precise spacing and packing.

The durability of a terrace built using aluminium joists depends on a number of criteria :

• For maximum durability, we recommend preparing the ground correctly before beginning the project to ensure that the surface is level and stable enough to ensure a long life for the riser pedestal installation
• Build your terrace in accordance with our installation instructions and advice
• Lay the joists on Jouplast packers or riser pedestals to prevent rising damp
• Use joist protection tape, etc.

The Cleman® self-levelling 80/130 riser pedestal can be used on stabilised uneven ground or an existing concrete slab. Its three-stage adjustment system provides quick and accurate height setting. It must be positioned under the paving in accordance with the recommendations of the paving manufacturer, with at least one riser pedestal at each corner of each paving slab.

The Cleman® riser pedestal must be installed on stabilised ground or an existing concrete slab. It must be positioned under the paving in accordance with the recommendations of the paving manufacturer, with at least one riser pedestal at each corner of each paving slab. Its progressive adjustment system allows height adjustment before, during and after installation, ensuring optimum alignment and a perfect finished installation.

For optimum installation, we recommend that you fill modules with aggregate to a level equivalent to the depth of the marker before filling the cells. Use 2.2 zone markers per linear metre (on average). You can adapt the quantity of zone markers to suit the specific needs of your project.