Waterproofing for underground tanks (ULCS)
Flexirub designs and manufactures waterproofing pieces in rectangular EPDM 3D for underground tanks (ULCS)
Waterproofing of underground tanks in rectangular 3D membraneWhat is ULCS? Ultra Light Cellular Structures
A stormwater retention basin is a stormwater storage area, buried or open pit. It is designed to collect rainwater from non-absorbent surfaces created for human development needs.
Due to its strong innovation policy today Flexirub continues to establish itself on the market as a major player in made-to-measure waterproofing solutions. To meet a market expectation the company has recently developed a novel solution for waterproofing underground tanks, which is characterised by ease of installation and guaranteed safety.
This solution involves the manufacture of a ready-to-install waterproofing piece, designed especially for underground tanks after a complete study of the project.
Laying of the waterproofing of a buried basin - ULCS:
The installation steps:
- Earth moving and installation of the external protection geotextile
- Installation and unrolling of the EPDM 3D sealing part
- Installation of the interior protection geotextile
- Mounting the SAUL in the pool
- Cutting and positioning of the outlet collars
- Closing the outer geotextile
Why should you choose an EPDM geomembrane prefabricated to measure in the factory and ready-to-install?
The ready-to-install EPDM 3D sealing geomembrane is manufactured to your measurements in the factory
- A turnkey solution in a single piece of up to 500 m² corresponding to the precise dimensions and shapes of each project
- The piece is manufactured in the factory in a clean environment and makes the achievement of a high quality level possible très élevé
The EPDM geomembrane is assembled in the factory by hot vulcanisation providing extreme resistance
- Maximum solidity of the welds due to the hot vulcanisation
- Excellent mechanical resistance (traction, elasticity, static puncture)
- Waterproofing piece guaranteed for 10 years
- Service life of more than 50 years for the EPDM material
- Perfect resistance to UV and extreme temperatures (- 40°C to + 120°C)
An economical solution that is more environmentally friendly
- Greatly reduced implementation costs as a result of the prefabrication
- Significantly lower labour costs
- No trimming or material loss
- Maximum longevity of the waterproofing
- Synthetic membrane that is more ecological than bitumen paints
Simple and quick to use in a smaller team as it is a ready-to-install solution
- No welding on site
- Smaller installation team
- On average installation time divided by 4 compared with traditional solutions that need welding on site
Fixing system by anchoring or bonding to optimise the installation time for the geomembrane
- Rapid closure with the double-sided adhesive or mastic
- Simplicity of finishes with a complete range of accessories and tools
The EPDM geomembrane is fixed in complete safety, without on-site welding
- No flame welding or hot air soldering irons on the work site
- No risk of fire or burns
- No fumes
- No odour
The rectangular EPDM geomembrane for sealing ULCS is typified by waterproofing simplicity in the context of rectangular tanks.This piece is manufactured to measure in a single piece by hot vulcanisation in our factories, whilst having the advantage of regular quality control. This a cellular structure storage system, covered and sealed by the EPDM geomembrane, which is useful for storing rainwater under roads, car parks, green spaces, for use as a basin in an urban environment or as an underground fire storage tank. The EPDM geomembrane makes it possible to ensure that ULCS (Ultra-Light Cellular Structures) underground tanks are watertight. It is compatible with all types of ULCS. The most frequently encountered configurations are the following:
Rectangular underground tank
L-shaped underground tank
Flexirub offers you a range of professional accessories to facilitate installation, and finishings for the made-to-measure EPDM membranes.
PROTECTIVE GEOTEXTILEThis drainage liner is a geocomposite consisting of a tridimensional polypropylene strands sandwiched between two thermomolded filtering geotextile layers. It performs all of the following 3 functions: drainage, separation and filtration.
DRAINAGE LINERThis drainage liner is a geocomposite consisting of a tridimensional polypropylene strands sandwiched between two thermomolded filtering geotextile layers. It performs all of the following 3 functions: drainage, separation and filtration.
It is ideally used as part of the geomembrane waterproofing system. The drainage liner separates two materials and acts as a drain for a fluid or gas even in a high pressure environment and/or with a low gradient. It can replace or add to a gravel filter bed. Requires careful installation: be careful not to crush the filter, avoid countersloping, ensure continuity and make sure the filter is well covered.
ROOFING VAPOR BARRIERThis vapor-barrier film is a synthetic film manufactured by polyethylene granule extrusion. The film is EC certified according to standard NF EN 13984 and has been designed for use in CULTISOL made-to-measure EPDM waterproofing installations. It avoids condensation in the waterproofing materials, in particular in insulation panels.
It is laid down on the flat roof substrate material (concrete, wood or metal). It must be placed on the warm side of the insulation panel. Double-sided adhesive is used to put in place the 10 cm cover and finishings..
EPDM CORNER GUARDSEPDM membrane corner guards made-to-measure by hot vulcanization.
Used to reinforce the membrane against abrasion and rubbing. Always used with CULTISOL made-to-measure 3D EPDM membranes to ensure roof watertightness.
ALUMINIUM RAINWATER DRAINThe rainwater drain is made of stamped, folded aluminum. It is specially designed for use with CULTISOL customized EPDM membranes.
Drains are set into the roof material (stone, concrete, wood, or metal)to ensure rainwater runoff from flat roofs. The crimp seal system means it can be easily and securely installed on the spot.
ADJUSTABLE ALUMINIUM LEAF GUARDThis adjustable leaf guard is made of aluminum wire. It is specially designed for use with CULTISOL rainwater downpipes.
They must be positioned over each rainwater downpipe or overflow to avoid clogging by leaves, branches and other rooftop debris. Available in several easy-to-fit diameters.
GALVANIZED STEEL GRAVEL GUARDThis gravel guard is made of galvanized steel. It is specially designed to protect rainwater downpipes against loose dirt and gravel.
They must be positioned over each rainwater downpipe to prevent them being clogged by gravel used as ballast with CULTISOL madeto- measure EPDM membranes.
EPDM RAINWATER DRAINThe rainwater drain consists of a rigid PVC pipe (or sleeve) and an EPDM membrane flange. The two components are assembled using a special heat welding technique. Supplied in standard 90, 110 and 125 mm dimensions.
Used mainly for roof waterproofing, but can also be used in other waterproofing applications. Cold-sealed with Cultisol EPDM on EPDM adhesive or secure
SHAPED ALUMINIUM FLASHINGThe flashing is shaped by folding a sheet of aluminum. Specially designed to mechanically secure CULTISOL made-to-measure EPDM membranes.
The flashing is shaped by folding a sheet of aluminum. Specially designed to mechanically secure FLEXIRUB made-to-measure EPDM membranes.
ALUMINIUM DRIP EDGE FLASHINGDrip edge flashing is shaped by folding a sheet of aluminIum. Specially designed to secure FLEXIRUB made-to-measure EPDM membranes at roof edges.
The drip edge flashing is used to ensure a perfect finish to sealing upstands.
It is secured using screws or hammer fixings every 30 cm in the predrilled
FASTENING PROFILEThe Fastening profile are used to mechanically fix EPDM finishes to the wall. They ensure the watertightness of the solution by blocking the water flowing along the wall. Dimensions: 3,74 cm x 3,05 m (sold by 5)
EPDM MASTICFlexirub’s EPDM adhesive is a single-component MS polymer-based moisture cured adhesive. For use as a waterproofing and adhesive agent with EPDM membranes. Will secure any kind of bonding. (Please contact Flexirub’s technical department if in doubt over compatibility with certain specific materials)
Perfect for finishes or for repairing torn or perforated membranes. Multi-purpose adhesive designed to bond with many types of materials: wood, concrete, metal, etc. Before applying, make sure the EPDM surface is clean and free of oil and grease to guarantee perfect bonding. (use only alcohol-based and not petroleum-based cleaning agents). Fiche De Données Sécurité Mastic EPDM
DOUBLE FACE ADHESIVES FOR EPDM MEMBRANEDouble-sided butyl adhesive allowing the junction between EPDM membrane and various fixing supports
- Used in addition to glues and sealants
- Ideal for securing a flexible EPDM collar or for fixing a sealing gauge
GLUE FOR EPDM MEMBRANE ON WOOD AND CONCRETE SUPPORTAdhesive based on acrylic resin allowing adhesion of the EPDM membrane on wood and concrete support
• Solvent-free and odorless glue
• Gluing by simple gluing
• Allows repositioning of the membrane
Up to 30 minutes after application Average consumption: 0.25 liters per 1 m² Volume: 2 L pot or 8 L bucket
Fiche De Données Sécurité Colle Membrane EPDM Sur Support Bois-Béton
ALL-SURFACE EPDM MEMBRANE ADHESIVE - 5 LA synthetic polymer contact adhesive used to fix the EPDM membrane to any surface, such as masonry, wood, metal or other compatible materials. Available in 5-liter cans.
Fiche De Données Sécurité Colle Membrane EPDM Tout Support
EPDM ON EPDM MEMBRANE ADHESIVE - 1 LA liquid butyl-based adhesive for EPDM membrane to membrane assembly, and to guarantee that the protection remains leak proof. Available in 1-liter cans.
Fiche De Données Sécurité Colle Membrane EPDM Sur EPDM
INSTALLATION TOOL KITKit of installation tools allowing a perfect installation of the membrane and accessories Composed of a pair of scissors, a marking pencil, a brush, a roller, a masking tape, a mastic cartridge and a putty gun.
REPAIR KITKit consisting of a square EPDM membrane, a butyl glue, a mastic cartridge And abrasive paper to allow cleaning before repairing a damaged membrane
SINGLE-USE LIFTING LOOPFlexirub supplies three types of lifting loop to facilitate movement of the EPDM geomembrane rolls.
- Maximum working load of 500 kg: 30 mm x 5 m
- Maximum working load of 1000 kg: 60 mm x 5 m
- Maximum working load of 1500 kg: 90 mm x 5 m
ANTI-ROOT BARRIERThe root barrier protects sensitive areas by deflecting roots downwards. The Isofilma root barrier consists of a non-woven, 100% polypropylene fiber geotextile, coated with polypropylene on both sides. This combination creates an extremely strong barrier that is impenetrable to roots whilst guaranteeing healthy development of trees and plantings. Dimensions: 1.40 x 25 m
- Exceptionally long-lasting (25 years)
- Impact resistant
- Light and easy to use
- Resistant to bacteria and chemicals
- Specific anti-UV treatment
- No risk to the environment - product is fully recyclable
WATERPROOF FLANGE COLLARThe waterproof flange collar is the only 100% waterproof solution on the market. It is composed of two distinct parts: - A first sticker that allows to adjust its drilling, to avoid tearing and to guide the pipe during the installation. - A second part assembled by clamping, consisting of two flanges and a joint.
PLINTH FOAMThe 3 mm skirting foam contributes to the acoustic and thermal insulation of floating floors and floor coverings. The Isofilma skirting foam is produced by non-polluting processes and is totally free of chlorine, emollients, halogens, sulfur, silicones and stabilizers from heavy metals.
Dimensions : 100 mm x 50 m.
- Avoids sound bridges and tile cracks
- Heatable floor heating
- Respects the expansion of the parquet
- Two thicknesses available for different performance levels
PROTECTIVE COVER FOR CEMENTTranslucent cover to protect the cement from moisture. Dimensions : 1,25 m (2 x 0,6 m) x 1,70 m.
Allows cement storage outside
PROTECTIVE COVER FOR GYPSUM BOARDTranslucent cover to protect drywall against moisture.
Dimensions: 4 mx 1.8 m or 4.5 mx 1.8 m.
Allows storage of plasterboard outside
SOFT CONICAL COLLAR EPDMThe flexible conical flange is the ideal solution for all connections on variable diameters. It is manufactured from a base and an EPDM sleeve manufactured in a cone with a diameter of 50mm to a diameter of 200mm. The assembly is fully assembled by hot vulcanization
ANCHOR ACCESSORIESFlexirub offers different accessories to facilitate the anchoring of its membranes. They are classified into two distinct categories: eyelets and fastening rings.
- Stainless steel eyelets: Øint 9 mm or 15 mm or 25 mm li>
- Nickel-plated brass eyelets: Øint 40 mm li>
- "Half-moon" or "triangle" rings: Ø 6 mm x 50 mm li> Ul> ul>
ALUMINUM ROOF OUTLETThe roof outlet is made of stamped, folded aluminum. It is specially designed for use with FLEXIRUB customized EPDM membranes
Overflows are set into the roof material (stone, concrete, wood, or metal) so as to ensure rainwater runoff in case the downpipes cannot cope. The crimp seal system means it can be easily and securely installed on the spot.
DOUBLE SIDED ADHESIVE VAPOR BARRIER ROOFINGAllows to connect the widths of vapor barrier film to each other
• Facilitates the fixation of the film on the support
PVC FEMALE CAPFemale-threaded PVC end caps are designed to allow easy connexion with various CULTISOL waterproofing items. Off-the-shelf fittings have a standard diameter, but customized diameters are available on demand.
They are used as end caps on CULTISOL EPDM bladder tanks. Connexions must be made watertight using enough teflon (PTFE) to eliminate any play and avoid over-tightening. Never use oakum or other sealants used for metal plumbing joints.
PVC OVERFLOW WITH 90° BENDThe 90° elbow fittings are threaded at both ends to allow easy connexion with various CULTISOL waterproofing items. Off-the-shelf fittings have a standard diameter, but customized diameters are available on demand.
They are used as drain outlet accessories on Flexirub EPDM bladder tanks. Connexions must be made watertight using enough teflon (PTFE) to eliminate any play and avoid over-tightening. Never use oakum or other sealants used for metal plumbing joints.
PVC DRAINAGE VALVEPVC-uH valves are simple quarter turn open/shut fittings. Threaded at both ends to allow easy connexion to other pipes. Off-the-shelf fittings have a standard diameter, but customized diameters are available on demand.
PVC THROUGH WALL CONNECTIONAllows the formation of a tight connection between the filling elements (tap, supply pipe, etc.) and the interior of the flexible tank
• Consists of a threaded spindle, two nuts and two EPDM flat seals
METAL FASTENING CLIPSPermit secure attachment of ground protection geotextile
METAL RINGSStainless steel for excellent resistance to corrosion and aging
• Made by hot forging for superior mechanical strength
Format: Triangle and Half Moon
GEOKIT® Drained and undrained tertreThis GeoKit® contains the following components:
- 1 separation geogrid li>
- 1 separation geotextile 150 g / m² li>
- 1 LDPE film 0.4 mm (in the case of the drained mound) li>
- 1 watertight flange collar (in the case of the drained mound) li>
- 1 adhesive collar (in the case of the drained mound) li> Ul> ul>
PVC GEOMEMBRANE 1MMComplies with NF DTU 64.1
• Allows waterproofing of drained sand filters
LDPE FILM 400 µmThis black 0.4 mm LDPE coextruded film offers very good mechanical resistance properties, thanks to its triple-layer technology. Rotproof and waterproof.
Black LDPE 400 μm film is used in self-standing wastewater treatment systems, in particular to ensure watertightness in watertight drained sand filter, raised bed or compact sand filter systems. It can also be used in undrained sand filter systems, for lateral watertightness.
SEPARATION GEOGRIDThe separation geogrid, or filtration grid, is manufactured from High- Density Polyethylene (HDPE). The material is highly-resilient while maintaining a degree of flexibility. For optimal efficiency, the geogrid must be used with a separation and filtration geotextile to retain the finest particles and avoid clogging.
The geogrid is mainyl used in waste-water treatment installations. It is used in particular to separate different granular layers. It is mandatory with a sand filter or other artifical soil filtration systems.
GEOPLUS® SPREADINGAllows separation of gravel and topsoil in trenches
THREE-LAYER COEXDALLE• Prevents moisture rise by capillarities
• Complies with DTU 13.3 relating to pavements
• Complies with CE and NF EN 13967 standards
Three-layer polyethylene three-layer underpadding film
• Prevents moisture rise by capillarity
• Conforms to DTU 13.3 relating to pavements
• Complies with CE and NF EN 13967 standards
UNDER-PAVING FILMFilm under translucent plowing, single-layer polyethylene
• Prevents moisture rise by capillarity
• Conforms to DTU 13.3 relating to pavements
• Complies with CE and NF EN 13967 standards
Format : 3 m x 66 m - 6 m x 33 m - 3 m x 50 m - 6 m x 25 m - 6 m x 20 m
PROTECTIVE FILMProtective film made of polyethylene
• Suitable for all types of work
• Easy to install
ANTI-TERMITE FILMThree layer film with a thickness of 150 μm in polyethylene
• Created a physicochemical barrier against termites
• Non-washable film which prevents any diffusion of active material
• Product certified CTB-P + by the FCBA
• Guaranteed 10 years
Format : 5 m x 33 m
ANTI-TERMITE FILM FACE ADHESIVEFormat : 75 mm x 66 m
ANTI-RADON FILM DOUBLE-FACE ADHESIVEFormat : 19 mm x 20 m
CONNECTOR-ANTI-RADON FILM FACE ADHESIVEFormat : 50 mm x 25 m
MULCHING MATWoven polypropylene green mulch fabric
• UV-treated product
• Fastening by staple
• Permeable to water and air
GEOTEXTILE FOR EXTERIOR WORKGeotextile in nonwoven needlepunched polypropylene 100 g / m²
• Stabilizes the floors before laying a pavement or a terrace
• Allows protection of drainage pipes
ANTI-RADON FILMFilm with a thickness of 200 μm in polyamide
• Created a genuine barrier to radon gas in construction
• Indoor / outdoor concentration ratio of 0.45% versus 68% for a conventional 200 μm polyethylene film
SUPERIOR ACOUSTIC FOAMPolyethylene foam with reticulated closed cells
• Allows acoustic and thermal insulation
• Compatible with underfloor heating
FINISHING PROFILEProfile for fixing the underbody protection to the wall
MOUNTING KNOBS WITH NAILS AND WASHERSNails and washers for fixing the profile to the underbody protection
BASEMENT PROTECTIONPolyethylene underbody protection
Protects bituminous paint Size: 1 mx 20 m - 1.5 mx 20 m - 2 mx 20 m - 2.5 mx 20 m - 3 mx 20 m
In order to facilitate the implementation of your waterproofing project Flexirub will provide you with its catalogue and a set of technical documents:
Waterproofing for underground tanks or ULCS
Our team of specialists is available to support you in your project. To enable us to come back to you with a detailed, costed proposal please take the time to complete your project sheet before making your request for an estimate.
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