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Grandseal GRANDTEX E4000 SBS modified Bituminous Waterproofing Membrane

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is made up of a mix of empty residue distilled bitumen modified with SBS thermoplastic rubber based on radial elastomers, synthetic rubber and stabilizing aggregate fillers.

126.79 AED 126.79 AED 126.79 AED

120.75 AED

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    SBS Membrane Grandseal

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    The waterproofing compound of GRANDTEX E4000 membranes is made up of a mix of empty residue distilled bitumen modified with SBS thermoplastic rubber based on radial elastomers, synthetic rubber and stabilizing aggregate fillers. 
    The compound is thermally stable, very elastic and particularly flexible at low temperatures. 
    The reinforcement used for GRANDTEX E 4000 membranes is made up of a non-woven polyester mat stabilized with glass fibers, which gives to the product adequate mechanical and breaking elongation characteristics, as well as very good dimensional stability. Such characteristics allow to use these membranes also on mechanically and thermally stressed surfaces. 
    The GRAN OTEX E 4000 membrane Is treated on the upper side with non-stick filler; other finishings such as polymeric film and non-woven may also be used. The lower side is finished with PE torch-on film.

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    The application temperature should be between 5°C and 55°C. Application procedures may vary slightly depending on site conditions.

    All pollutants, such as dust, residues of curing resin, oil, and grease, must be thoroughly cleaned from the surface. Any surface imperfections, protrusions, and structurally unsound or friable concrete must be removed and repaired.

    Apply the GRAND PRIME SB primer using a roller or brush at a coverage rate of 4-6 m² per liter. The primer must be allowed to dry completely before fixing the membrane.

    GRANDTEX E 4000 waterproofing membranes are fixed by torch welding the underside. The membrane rolls should be lined up and spread freely, starting at the lowest point on the roof deck, over the area to be fixed. The rolls should be laid in such a way that they overlap one another along the side lap by at least 10 cm. The lap joints should direct water towards the drains.

    Next, the membranes are rolled back without changing their orientation. They are then unrolled again while heating the underside sufficiently to melt the surface. End laps should be at least 15 cm. Remove any unnecessary and inconsistent heat application.

    To create a thin bead of molten bitumen at the bottom, the lap joints should be heated from the top; the bead is then smoothed out with a trowel, ensuring a perfectly welded joint.

    • Under and middle layer membranes
    • Under heavy protection membranes
    • Membranes against humidity from soil Can be used on the following structures:
    • Waterproofing of foundations and basement tanking against permanent water submersion and damp soils.
    • Waterproofing of retaining walls
    • Wet areas
    • Waterproofing on flat roofs under protective layers or ballast Waterproofing of roof slabs in inverted roof systems
    • Waterproofing on balconies, terraces and wet rooms under tiles
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