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A membrane for every need

Manufactured with quality materials, the Flex on-site lining is available in several trendy colours for a perfect integration of your pool in its environment. Perfectly resistant to chlorine and UV rays, it is the assurance of choosing a cover that will offer you many years of swimming in complete peace of mind.

Product bonus

  • Excellent resistance to ageing and temperature.
  • Excellent flexibility.

For which pool?

The Flex on-site lining meets the requirements of heavily used pools (hotel or camping pools) and is recommended for family pools, especially in the following configurations:

  • Renovation of old pools, especially large ones.
  • Watertightness of unusually shaped pools, for example with stairs of more than 5 steps.
  • Overflowing pools with spout system.
  • Underwater beaches.
  • Indoor swimming pools.


  • 150/100ᵉ reinforced membrane with protective coating.
  • The Flex on-site lining complies with the NF EN 15-836-2 standard to ensure a stable and durable coating.
  • By choosing Flex, DEL offers you a 10 years guarantee on the watertightness for use in water up to 32°C.
  • Anti-slip adhesion: complies with NF-EN 16582.



Printed matter

All textured models are anti-slip: easier to order and install.


For added safety, equip your stairs and small bath with the 150/100ᵉ anti-slip, available in the same colour range.

How to use

Clean your pool every week in season:

  • Clean the skimmer and the prefilter of the pump
  • Use a non-abrasive, solvent-free waterline cleaner to clean it
  • Sweep the walls and bottom of the pool
  • Backwash the filter for 15 minutes to avoid clogging.

Replace one third of the pool water every year to prevent saturation of the water with stabilisers.

Renew the filter media at least every 5 years.

Winterize when the water temperature is below 10°C using a winter cover to protect the liner from staining by dead leaves.

photo gallery

Discover our products in action: coatings, automatic slatted covers, covers and rollers.

coating colours and water effects

Play with the water lines and liner colours, and discover our colour combinations.

find my pool specialist

Ask us for the contact details of the pool specialists closest to your work.

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