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    Drainage

    protecto-g8-new-3

    For Foundation Walls

    HDPE dimpled membrane with bonded geotextile fabric allows water to pass through the fabric but keeps soil particles in place. Water will drain downwards along the surface of the HDPE membrane towards the drain beneath.

    • Protecto-drain G8 is installed with the geotextile fabric facing towards the soil backfill/shingle
    • Water passes through geotextile and down through the 8mm air gap around the dimpled cups
    • 100gsm geotextile membrane ensures consistent flow rate of water, prevents deluge
    • Constant air gap is maintained, ensuring free flow and preventing clogging of the drainage channel beneath
    • An effective drain – such as a French Drain – should be constructed at the bottom of the surface to allow water dissipation
    • Prevents waterlogging, subsidence and rising damp
    • Individual sheets can be fixed with double sided bitumen tape when installing on a vertical plane to ensure a seamless, water tight membrane

     

    For Planters

    • Ideal for lining planters and vegetated areas
    • Installed with the geotextile fabric facing towards the soil
    • Membrane is easily shaped around corners and details such as downpipes and outlets
    • Can be cut and bonded easily to create seal around inside wall of planter
    • Excess water passes through geotextile fabric to 8mm air gap and is channelled away
    • Prevents clogging of the drainage outlet

     

    For Use on the Horizontal Plane

    • Used for effective drainage of block paving
    • Good flood management on pedestrian areas
    • Membrane is laid between the waterproofing and the block paving with the geotextile membrane facing upwards
    • Paving slabs can be suspended on Wallbarn pedestals
    • or Blocks can be laid directly onto the membrane and gaps filled with fine sand
    • Water passes through geotextile fabric onto HDPE membrane below and along the top of the membrane towards the drain
    • Sand filling on block paving is held in place on the geotextile and not washed away
    • Prevents clogging of the drainage system and allows puddle free paving

     

    Fixing – Vertical Plane

    When installing onto a vertical surface, Protecto-drain G8 can be fixed with double sided bitumen tape .  Always ensure each sheet is overlapped by at least 20cm to ensure a watertight seal.

     

    Fixing – Horizontal Plane

    Lay membrane down with geotextile side facing up and overlay with sand / backfill. Seal each sheet securely with double sided Protecto-tape, ensuring a 20cm overlap, to ensure a watertight seal.

    > See how the membrane is fixed to the wall

     

    Storage & Handling

    Protect against prolonged exposure to direct sunlight and temperatures over 25 °C

    Installation

    Used as a mechanical protection against soil and root movement along foundation walls. It can be installed with a 20cm overlap and fixed with nails and sealing buttons 5 cm from the top edges of the roll and 20cm from each roll. Edging profile is installed to prevent soil ingress into the cavity. Maximum build-up 8 metres high.

    Laid horizontally and fixed using sealing tape in the overlapping areas the sheets protect concrete flooring form rising damp and keep reinforcement mesh in place firmly during the concrete works.

    NBS Source

    BIM Library

    Protecto-Drain G8 Technical Data

    Technical featuresTechnical dataTest Method
    Membrane materialHigh density polyethylene (HDPE)
    Filter materialPolypropylene geotextile (100gsm)
    Roll width1 metre or 2 metrescalibrated measuring tape
    Roll length15 metrescalibrated measuring tape
    Roll weight650 gsm (±10%)calibrated thickness
    measuring tape
    Rolls per pallet6
    Height of cups8mmMDV
    Number of cups1500 pieces per m2MDV
    Resistance to water penetrationW1EN 1928
    Compression strength250kN / m2MDV
    Tensile strength MD= 330 N / 50mmEN 12311-2
    Tensile strength CMD= 335 N / 50mmEN 12311-2
    Elongation MD= 28.7 NEN 12311-2
    Elongation CMD= 26.2 NEN 12311-2
    Resistance to tearing MD= 332 NEN 12310-1
    Resistance to tearing CMD= 349 NEN 12310-1
    Resistance to static loadingNo perforation at 200 N in 24 hrsEN 12730
    Durabilitywaterproof / passedEN 1296 & EN 13984
    Exposure to liquid chemicalswaterproofEN 1847
    Air volume between the cups5.5 litres per m2MDV
    Water drainage capacity4.6 litres per m2MDV
    Temperature tolerance– 30°C to + 80°CMDV
    Reaction to fireB2 (B1 available by special request)DIN 4102
    Physical characteristicsRot-proof, resistant to fungus and bacteria. Will not leach chemicals. Not harmful to drinking water. No health hazards under normal use
    Wallbarn