Frequently Asked Questions

Yes, Cleman® and Easio® 60mm riser pedestal height extenders can be stacked. Up to 4 height extenders can be stacked to achieve the required terrace height. You can therefore adjust riser pedestal heights to suit the needs of your project, without compromising the stability and strength of the overall installation. To ensure installation safety, the recommended maximum number of height extenders that can be stacked is 4.

The MODULESCA® connector kit is fully compatible with all MODULESCA® modules and steps. It can be used to connect two 20 cm modules together, connect a MODULESCA® step to a 20 cm module or or connect two MODULESCA® steps together.

For the longevity of your outdoor arrangement, we recommend laying a sub-base or leveling sand bed with a grain size between 0 and 5, which you level with a screed. The thickness of the layer should be between 1 and 5 cm maximum. This foundation layer will ensure proper soil drainage and stability of the installation.

The use of a gravel stabiliser is essential to prevent ruts from forming, which can be seen when vehicles repeatedly drive past a garage, for example.

Our paving stone stabiliser is suitable for all concrete paving stones measuring 15 x 15 cm and 6 cm high. We also allow stone or sandstone paving stones, even though they are less common because they are more expensive.

We recommend choosing paving stones with smooth sides without protrusions. The paving stones must not be aged. Often when they are aged, they have been tapped and have irregularities. This makes them unique and attractive but uneven. Using this type of paving stone would make installation and traffic on our paving stone stabilisers unstable.

The manufacturing tolerance according to standard NF EN 1338 is +/-3mm on the 150 mm side.

This type of paving stone is easily found in DIY superstores or building material suppliers.

The durability of a terrace built on aluminium joists depends on several criteria.

• It is highly recommended that you prepare the ground properly so that the levelling of the terrain is stable, thereby guaranteeing the durability of the pedestal supports. We recommend that you watch our video on ground preparation to find out more.
• The choice of aluminium decking joists is itself a factor in the durability of the decking, as already mentioned in the section on the advantages of this installation system. The aluminium material makes the joists rot-proof and highly resistant to weathering and UV rays.
• The decking must be installed correctly on aluminium joists. To do this, we recommend that you read our installation advice. The joists must be fixed and aligned. Use our self-drilling screws, accessories from our range, to ensure the durability of your deck.
• Floor insulation: to prevent moisture rising, we recommend installing aluminium joists on wedges or pedestals. Jouplast® deck pedestals are the best choice for optimal adjustment.
• Use joist protection strips between the joists and decking boards to prevent water retention and extend the life of your aluminium joist decking.

Self-levelling pedestals for terraces are available from Jouplast for the slab and wood/composite range.

Yes, ground preparation is essential before installing extra-flat terrace pedestals. Proper ground preparation guarantees the durability of the terrace and prevents the pedestals from moving over time. However, this ground preparation does not require major work.

On a concrete slab, make sure to remove any contamination that could hinder the installation and stability of the pedestals.

On raw ground, some simple earthworks will be necessary. Start by excavating the ground to obtain a flat base and ensure proper levelling. The use of geotextile and the creation of a foundation layer of crushed gravel are then essential to accommodate the extra-flat adjustable pedestals in optimal conditions.

For installation on a waterproof surface, comply with the recommendations of DTU 43.1.

The Profildeck® fixing clip is specially designed for installation on Profildeck® H27 and H55 aluminium joists.

The Essentiel® 10mm riser pedestal height extender is used to increase the height of terrace riser pedestals. Suitable for use with terraces surfaced using timber decking tiles. This height extender is ideal for those situations where additional height is required to compensate for a slope or to achieve a precise terrace height.

Jouplast® 3 mm flat packers are suitable for many different uses. Their integral moulded lugs make them stackable, and they can be combined with ridged wedges for even more precise adjustments. Their snappable design makes them adaptable to meet different size requirements: they can therefore be used in one piece or snapped into 2 or 4 sections, depending on project requirements. For guaranteed stability, they can be screwed, glued or nailed directly to the structure.

The support fits onto the riser pedestal flange base. Used to finish the edges of paved terraces and timber decking for outdoor pedestrian use only. In combination with a paved side finishing plate, it can be used to create a number of different configurations, including plinths, concealed finishes and garden step trades. Used alone, it can be used to create a butt-jointed finish. Allow one support per riser pedestal around the perimeter of the terrace or decking. When planning corners, the recommendation is to allow two supports. The support is fixed securely and invisibly in place using the glue trap system, and requires no screw fixings.

The Cleman® 80/130 mm riser pedestal can be used on stabilised uneven ground or an existing concrete slab. It is not recommended for use on loose ground.

Der Cleman® Stellfuß wird ausschließlich auf stabilisiertem Boden oder auf bereits vorhandener Betonplatte verlegt. Er ist für weiche oder unvorbereitete Böden nicht geeignet und muss auf einer ebenen Fläche mit Höhenunterschieden unter 1,5% verlegt werden.

Once the deck boards have been laid in accordance with French building regulation DTU 51.4., Profildeck® screws are screwed directly through the decking board and into the aluminium joist, using a maximum torque rating of 7 Nm (position “18” on a 20-position 18V cordless combi drill). It is important to check that the screws are compatible with the material used, particularly in the case of composite decking boards, which may require specific fixing methods.

The Jouplast® Elevo riser pedestal for metal posts can be installed on all types of ground, including slopes and loose or uneven ground. It is ideal for sites where traditional preparation (excavation, concrete slab casting etc.) is not feasible, and enables quick and stable construction.

3mm 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 Cleman® and Easio® riser pedestal height extender adds 60 mm to the initial riser pedestal height. By stacking up to 4 height extenders, the initial height can be increased by total of 240 mm.

MODULESCA® 20 cm steps are used to create modular garden steps. Manufactured from glass fibre reinforced polypropylene, they are ultra-strong and rot-proof with a load-bearing capacity of more than 6,000 kg. They are the ideal solution for creating straight and curving garden steps. They can be used to widen existing MODULESCA® module steps or to create new flights of narrow steps.

We can reasonably estimate the cost of a gravel courtyard for a private individual, if self-installed, to be between €15 and €30 per square meter. For this approximately 100m² driveway, you should therefore budget at least €1500 for materials, including gravel and cellular paving grids, which seems to be a very reasonable budget for a durable, aesthetic, and ecological arrangement. Your gravel driveway will also be accessible to people with reduced mobility (PRM), which is an additional advantage.