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Flash Harry Liquid Plastic | 5L, Green

Flash Harry Liquid Plastic | 5L, Green

R665.00

Flash Harry Liquid Plastic in Green is a high-performance, latex-modified waterproofing and coating solution designed for DIY and professional use. Unlike conventional sealants, its pure acrylic rubberized formula offers extreme flexibility (350% stretch), UV stability, and superior adhesion. Ideal for pitched and flat roofs, flashings, parapet walls, and more, this non-flammable compound delivers long-lasting protection with a bold green finish.

Flash Harry Liquid Plastic | 5L, Green Details:

  • Size: 5 Liters
  • Colour: Green
  • Type: Pure acrylic rubberized waterproofing and coating polymer
  • Viscosity: 120–130 Krebs Units at 25°C
  • Stretch Capacity: Tested to 350%
  • Flammability: Non-flammable
  • Application Method: Brush, roller, or airless spray
  • Drying Time: Between coats: Minimum 30 minutes at 25°C and 65% R.H. Rain-resistant: 6–8 hours
  • Temperature Range: Apply only between 5°C and 35°C
  • Coverage: Waterproofing system: 2.0–2.5L/m². Coating applications: 3m² per liter per coat (surface-dependent)

What’s In The Box?

1 x Flash Harry Liquid Plastic | 5L, Green

6 in stock

SKU: FHLP8-5

Flash Harry Liquid Plastic Overview

Flash Harry Liquid Plastic is engineered for versatile waterproofing across a wide range of surfaces. Its latex-enhanced formulation ensures flexibility and adhesion, making it suitable for both pitched and flat roofs, as well as complex architectural features like skylights and chimneys.

Flash Harry Liquid Plastic Benefits and Features

  • Extreme Flexibility: Latex-modified for 350% stretch
  • UV Stable: Resists degradation from sun exposure
  • Superior Adhesion: Bonds to multiple substrates
  • Non-Flammable: Safe for residential and commercial use
  • Multi-Surface Compatibility: Works on tiled, slate, iron, and timber roofs
  • DIY Friendly: Easy to apply with brush, roller, or spray
  • Fast Drying: Rain-resistant within hours
  • Durable Finish: Long-lasting protection with full cure in 24–48 hours
Flash-Harry-Liquid-Plastic-5L-Green_FHLP8-5

Steps to Follow for Applying Flash Harry Liquid Plastic

Preparation:

  1. Ensure surface is clean, dry, and free of debris
  2. Prime surface based on material type:
    • Galvanized Iron: Use acid degreasing primer or Frogskin Cleaner
    • Rusted Surfaces: Brush down and apply rust converter
    • Porous Surfaces: Prime with Plaster Pal or 50% diluted Liquid Plastic

How to Apply:

  • Waterproofing:
    1. Use with waterproofing membrane
    2. Saturate membrane thoroughly—pre-soaking is recommended
  • Coating:
    1. Apply minimum two coats
    2. Alternate coat directions at right angles
    3. Allow 30 minutes drying time between coats

Cleanup:

  • Clean tools immediately after use
  • Store remaining product in a sealed container
  • Dispose of packaging responsibly

A Few Scenarios Where the Product Can Be Used:

  • Waterproofing flat roofs under 20m²
  • Sealing around skylights, chimneys, and parapet walls
  • Coating roof screws, lap joints, ridges, and valleys
  • Protecting timber, iron, slate, and tiled pitched roofs

Limitations

  • Not suitable for use under tiles or in areas with permanent water ponding
  • Not recommended for lightweight screed applications
  • Do not apply over existing bitumen systems
  • Avoid waterproofing over gaps larger than 5mm

Other Products You May Need for Your Waterproofing Project

Health and Safety

Always wear protective gloves and eyewear during application. Ensure adequate ventilation when working indoors. Do not apply in extreme temperatures or on wet surfaces. Keep out of reach of children and store in a cool, dry place.

Want to know more about this product? Click here to learn more.

Additional information

Weight4.854 kg
Dimensions18 × 16 × 25 cm

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Werner Lewitton profile picture
Werner Lewitton
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Had an issue with delivery earlier this morning but Juanita and her team quickly and professionally helped to sort it out, and I am very happy with the excellent customer service received! There are few places left that provide this type of service. I will definitely keep on supporting Habitat! Keep up the great work!!
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Bester Hattingh profile picture
Bester Hattingh
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Great shop for all your DIY at home. The guys helping are proffesional and know their story.
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Rick Hopkins profile picture
Rick Hopkins
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People are very helpful there
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Daniel Goosen profile picture
Daniel Goosen
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Absoluut uitmuntende diens! My 1000 L watertenk is afgelewer in Pretoria teen n baie beter prys as plaaslike verskaffers. Dis voorwaar DIENS! Kommunikasie was uitstekend. Ek beveel Habitat Potch beslis aan!