Flash Harry One Shot Waterproofing Assorted Colours With Membrane 5ltr

Product Code: 115
Weight: 5.00kg

Price: R0.00

Available Options

* Flash Harry Colours:

Durable acrylic and membrane system

  • An acrylic compound for waterproofing of iron, or tiled pitched roof applications, skylights, parapets, roof ridges, flashings and roof screws.
  • One shot must be used in conjunction with a waterproofing membrane. As with any liquid and membrane system, the first saturating coat is critical.
  • Applying many coats on top of the membrane does not yield proper results.
  • Not recommended for areas of long-term ponding or under tiles (fish ponds etc).
  • On porous surfaces a 50% product and water dilution or a bonding liquid, is recommended as a priming coat.
  • Do not use to overcoat bitumen waterproofing systems. Ensure compatibility when applying a waterproofing compound over an existing unknown product.
  • Not recommended where exposure to negative water pressure is present.
  • Clean up with water.
Colour -                 Red,Grey,Black,Brown,Burgandy,Terracotta
Application -         Brush, roller or spray.
Coverage:             2.2L/m2 – 2.5L/m2 (depending on surface porosity)
Total Solids -        +/- 55%
Specific Gravity - +/- 1.2
Viscosity -            100 Krebbs Units at 25ºC
Drying Time -       (Between Coats) Minimum 30 minutes at 25ºC at 65% R.H
                              (Last Coat) 2-3 hours before resistant to rain. 
                               Full cure 12-20 hours at 25ºC at 65% R.H.
Cleaning -             Water when wet. Ethyl acetate when dry.
Flammability -      Non Flamable
All forms of surface contamination must be removed to ensure a smooth surface, free of moisture and any loose material, or any other barrier to adhesion. Steel and galvanised steel surfaces must be free of loose paint, grease, grime, oil and rust. Technical assistance and applicator training are freely available to all approved users.

All non metal surface – use a 50% ONE SHOT and clean water mix to prime the entire surface, allow a 30 minute drying time
On metal surfaces – Prime with Darachem DC4 and allow 4 hour drying time.
Apply at the rate of 1L/m2 undiluted ONE SHOT and immediately embed the SBP Geo-Fabric into the wet product ensuring no creases or folds in the material. Work the membrane into the ONE SHOT using a brush. Product should be evident “striking through” the membrane and if this is not the case, too little product has been applied or the product has been allowed to dry before embedding the membrane. At this point the bedding coat for the second run of membrane can be applied.
Apply the second run of membrane into the bedding coat in the same manner ensuring an additional coat at 1L/m2 between the 2 layers of membrane at the 100 mm overlap.
After allowing a minimum drying period of 30 minutes.
Apply a second coat ONE SHOT at the rate of .75L/m2 . Allow a minimum of 30 minutes drying period.
Apply a further final coat of ONE SHOT at the rate of .75L/m2 . It will be noted that a total of 2.5L/m2 of ONE SHOT has now been applied. The minimum weight of the membrane alone shall be 100g/m2 . The total weight per m2 shall therefore be 1.5 kg
Note drying times are based on a temperature of 250 c min. and a R.H. of 60% max
Technical assistance and applicator training are freely available to all approved users.
A maintenance re-coat is recommended after three years.

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