Frequently Asked Questions

A raised composite decking patio can support up to 1 tonne per pedestal, which means that you can confidently furnish your outdoor living area even with heavy furniture, barbecues or griddles. The raised decking system is renowned for being highly weather- and frost-resistant, ensuring the longevity of your outdoor space.

To ensure optimal performance of your Jouplast® stabilisation grids, it is essential to choose the right size gravel for the product used.

• Alveplac®: For this model, we recommend using gravel with a grain size of 5/15 or 8/16 mm. Once the grids are filled, it is advisable to add approximately 2 cm of additional gravel on top of the honeycomb grids to ensure maximum stability and performance.
• Urbangravel®: To fill the honeycomb cells of this product, choose crushed gravel with a grain size between 5 and 10 mm. Fill the cells to the top to obtain a stable and uniform surface.
• Urbanit®: Similarly, for this model, it is recommended to use crushed gravel with a grain size between 5 and 10 mm. Fill the cells to overflowing to ensure optimal stability.

After installing the gravel, make sure to spread it evenly with a rake to achieve a flat and attractive surface. By following these recommendations, you will ensure the durability and effectiveness of your gravel landscaping.

Before installing any patio pedestals, it is important to stabilise the ground to ensure the longevity of your wooden deck or paved patio. To establish a solid base for your raised patio, the ground must be levelled, even and free of any obstacles.

On a concrete slab, ensure you remove any debris that could hinder the installation and/or stability of the pedestals.

On unprepared ground, minor earthworks will be required. First, you will need to excavate the ground to create a level base and ensure the ground is properly levelled. The installation of a geotextile membrane and the creation of a base layer made of crushed stones are then essential to ensure that the patio pedestals can be installed correctly.

If installing on a waterproof surface, comply with DTU 43.1.

If you are using Elevo® pedestals, ground preparation is minimal and simply requires the installation of a geotextile membrane to ensure proper drainage of rainwater.

The price per square metre of an elevated composite patio can vary depending on two factors:

1. The type of composite and finish : the price of composite boards can range from £90 to £200 per square metre, depending on the quality of the raw material. The more durable the materials, the higher the budget will be.

2. The cost of labour : this cost can vary greatly. If you are handy or a DIY enthusiast, creating your elevated composite decking by yourself is entirely possible. For example, we know that a 20m² composite decking on pedestals can be installed in a single day.

If you do not have the means or the skills to do this yourself, you can also ask a landscaper to take care of your composite decking project. You should expect to pay between £20 and £50 per square metre for a professional to install your raised patio.

This installation method will not cause any issues, as the pedestals are easy to adjust. You must first prepare the ground to ensure the surface is levelled. Our range includes spacers to compensate for any differences in ground level. Each manufacturer provides their own fixing clips to fix the composite decking boards.

The Profildeck® fixing clip for clip-on profiles allows you to finish the edges of your decking quickly and easily. Simply install the accessory along the joist or at the end of the joist, secure it with a structural screw, and clip the Jouplast® finishing profile onto the accessory.

The way you choose to finish a terrace built on riser pedestals depends primarily on whether or not you want a neat finished look. To help you visualise what a terrace without a finished side looks like, imagine the side view of your riser pedestal terrace and its exposed components… The appearance is not very attractive, and it certainly doesn’t look very professional. Our terrace side finishing options also make it possible to hide cables and pipes beneath the raised terrace. Neat terrace edges are the finishing touch that makes all the difference and creates a professional appearance.

Yes, it is essential to prepare the ground before installing PLOGOM low-profile decking pedestals: for installations on concrete slabs, make sure to remove any debris that could compromise pedestal installation and/or stability.

The Essentiel® 60 mm pedestal height extender is an accessory designed to increase the height of patio pedestals by 60 mm. It is compatible with Essentiel® adjustable paving and decking joist support pedestals. It provides a practical solution for raising the height of your patio without compromising maximum stability.

The Cleman® 130/230 mm patio pedestal must be installed on stabilised ground or a precast concrete slab. It must be positioned under the paving in accordance with the recommendations of the paving manufacturer, with at least one pedestal at each corner of each paving slab. Its height adjustment mechanism can be used before, during and after installation to ensure quick and precise adjustment.

Yes, MODULESCA® steps can be customised to suit your own preferences. They can be clad using timber, ceramic tiles or paving slabs to blend in with your garden design and project.

It takes around 10-15% longer to lay decking using Fixego® than with conventional methods. The fact that the initial preparation stage requires greater accuracy, explains why it takes a little longer. The time taken to prepare and install joists is the same.

To use the Jouplast® paving grab, simply hold the ergonomic handle tightly to maintain a secure grip on the paving slab. For user safety, it is important to handle this tool with care, especially when moving paving slabs.

The 2.5% slope corrector for Essentiel pedestals compensates for gently sloping ground when constructing a raised patio. Positioned directly under the pedestal, it provides up to 2.5% of slope correction to ensure a flat, stable terrace surface. Its use is essential to ensure optimum installation of paving slabs or decking joists, especially on gently sloping sites.

Begin by placing the 21 cm joist in the central housing moulded into the module, and the two 35 cm joists in the side positions. Then secure all 3 by screwing through the module. Once the joists are in place, you can clad the steps by screwing the timber decking boards directly onto these sections of joist.

Stabilized gravel should be laid with a preliminary excavation of 10 cm for a pedestrian walkway. For a driveway, we recommend excavating the soil to a depth of 20 to 30 cm.

To ensure the stability of your terrace, it is essential to install your pedestals on properly prepared ground. Installation directly on soil, without earthworks or stabilisation, is strongly discouraged: the ground may settle or move over time due to weather conditions (rain, drought) or the weight of the structure. We recommend using our pedestals on raw, pre-stabilised ground or on a concrete slab. In both cases, the substrate must be clean, stable and well levelled to ensure the long-term durability of your project.

Jouplast decking pedestals come with a 10-year guarantee, subject to our installation guidelines and terms and conditions of sale.

Composite boards have an average lifespan of 20 to 30 years, though this will depend on the environmental quality of the materials. Solid boards are more robust and durable than hollow boards. Gentle, regular cleaning will help extend the lifespan of your decking. The UV protection on the boards is also important for withstanding high temperatures.

To build a straight or quarter-turn outdoor staircase using Modulesca®, the minimum slope of the ground must be 46% and up to 70%. Outside these two slope limits, it is impossible to install our Modulesca® staircase for your landscaping projects.

A base layer composed of 0/31.5 crushed stone must be laid to level the ground. This must then be compacted using a vibratory plate compactor.

Depending on the nature of the soil, a draining foundation layer can be laid using 30/60 or 40/80 crushed stone.

If the resulting surface is still uneven, we recommend laying a bed using quarry sand or 0/4 crushed sand. This will make it easier to install low profile pedestals.

We recommend using the vibratory plate compactor between each layer.

You can watch our video on ground preparation.

A raised composite wood patio has many advantages, but there are also some disadvantages to consider.

Composite decking on pedestals can be more expensive than a natural wood decking. It is easy to find good-quality, low-cost timber. As composite is a process that combines two materials, this is less often the case.

Composite, and particularly smooth boards, can be prone to scratches and may require regular cleaning to prevent unwanted stains.