Two pack cementitous waterproof coating 

Engineer Plus HEWC-99 is a two component cementitious & acrylic flexible waterproofing & protective coating composed of best quality portland cement, properly selected & graded aggregates, additives & acrylic emulsion polymer as a binder. It is applied to waterproof and protect concrete and similar structures. specially formulated for swimming pools, retaining walls, pile heads, water tanks, submerged tunnels, sumps, bridge decks, marbles, granites and a wide variety of extreme service class structures because on curing it forms an excellent elastomeric, waterproof & protective layer over the substrate.



PackingM.R.P.Cartoon Pack
3 kg450
15 kg1850

Areas of Application

Engineer Plus HEWC-99  can be applied to new or old concrete structures that are structurally sound and strong,


  • Basement retaining walls.
  • ¬†Pile Heads.
  • ¬†Structural surfaces of cellars.
  • ¬†Concrete roof slabs, floors, balcony floor slabs.
  • ¬†Water tanks and swimming pools.
  • ¬†Bridge decks.
  • ¬†Canals and dam walls.
  • ¬†Structural surfaces of dykes.
  • ¬†Waterproof coating (bottom coat) for marble, granite and other natural stones.
  • ¬†Suitable for steam room waterproofing.
  • ¬†Sewage treatment plants.
  • ¬†For special applications such as areas where more thick plaster application is needed.


Features & Benefits

  • ¬†¬†Flexibility –¬†Provides a flexible & low permeable coating.
    1. Water permeability –¬†Excellent resistance to ingress of water.
    2. Slip resistant –¬†Provides slip resistant coating.
    3. Waterproof –¬†Waterproof for concrete structures.
    4. Adhesion –¬†Excellent adhesion to concrete, natural and artificial stone.
    5. Diffusion –¬†Excellent resistance to chloride ion diffusion and carbon dioxide.
    6. Low temperature resistant –¬†Resistance to freeze-thaw cycles and de-icing salts.
    7. Carbonation –¬†Prevents carbonation of cement concrete.

Method of Application


    • The surface must be strong & free from dirt, dust & loose particles. Thoroughly wire brush the surface & clean the dust by air compressor or wash the surface with water.
    • Oil & grease must be removed using degreasing solvents.


    • Cracks and crevices must be duly filled or repaired with appropriate product such as

    Engineer Plus URP -99 /  Engineer Plus BMP-99


    2 Mixing

    • Shake well the liquid component to a homogenous milky colour , before mixing transfer entire quantity of liquid component into a suitable clean mixing vessel, gradually start addition of powder component under constant mixing with a stirrer using a pneumatic or electric power tool (1kw) at slow speed at 250 ‚Äď 300 rpm

    for 3- 5 minutes to a homogeneous & uniform free flowing slurry.




    Blinding Coverage

    • Apply slurry coat of mixed material for two coats at a coverage rate of 1.5 kg/m2 over the set concrete slab by a masonry brush or appropriate power spray equipment.

    Concrete slabs or roof slabs

    • Two coat of mixed slurry to be applied to the set concrete @ 1.5 – 2kg/m2 by a masonry brush, roller or appropriate power spray equipment.


    Pile Heads

    • Two coats of mixed slurry to be applied on to the pile head @ 0.75kg/m2 first coat and 1.25 to 1.5 kg/m2.
    • Second coat either by a masonry brush or by appropriate power spray equipment.


    Water tanks and Swimming pools

    • Two coat of¬†Engineer Plus HEWC-99¬†¬†applied @ 1.5 kg/m2 each coat by a masonry brush or an appropriate power spray equipment.
    • All applications where two coats is specified, the second coat shall be applied when the first coat is completely dried.
    • The treated area should be protected from direct sunlight and to be damp cured by covering with damp hessian or similar system.


    • It is recommended to apply one coat at the bottom side of the marble @ 1.5 mm thick at a coverage of approximately 1.8 to 2 kg/m2.