Flash Harry DIY Waterproofing

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Flash Harry DIY Waterproofing Experts in DIY Waterproofing solutions since 1975. Just Works! As part of the STT Sales Group, the brand has strong credentials in the waterproofing sector.
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Flash Harry is one of South Africa’s leading DIY waterproofing brands, incorporating a range of over thirty purpose-specific waterproofing and damp proofing related products. It was developed and is still manufactured in South Africa, and has been specifically formulated for the African market, tested to withstand the continent’s harshest weather conditions. STT Sales is one of the country’s leading manufacturers of industrial waterproofing brands, including Darachem and Bond M, with over 45 years of experience in the industry and its products have been put to the ultimate test on a wide variety of high-profile sites ranging from Soccer City, the new domestic terminal at OR Tambo and the Gautrain Sandton Station to the SA Mint (Pretoria), SA Receiver of Revenue head office (Pretoria), SA Police head office (Pretoria) and SA Breweries head office (Alrode). The roots of the Flash Harry brand were established in 1975, and today incorporates a vast (and growing) range of products covering a broad scope of DIY waterproofing and damp proofing applications. In a nutshell, if there’s a leak, there’s a Flash Harry product that can fix it. The brand is distributed nationwide, and sold through over one thousand hardware and retail stores around Southern Africa, including the Jack’s Paint Group, Mica, Buco, Build It and DIY Depot. In Gauteng alone, the brand enjoys over 60% market share and is listed with all the major local and national chains. The full range comprises:

One Shot, Fibre Flex, Liquid Plastic, Liquid Plastic+, Fix-a-Leak, Frogskin Roof Paint, Drip Stop, Bitumen Mastic, Thermoflex, Alu-Coat Silver, Hypercrete, Squeeze n' Seal, Rust Stop, Vala Inthontsi, Roof Plasters, Alu-Flash Tape, Fast Flash Tape, Carport Cure, Bitucryl Primer, Plasters Pal, Sticka Block, Wonderfill, Stitch Bonded Polyester membrane, Polyfelt and Crackgon. The Damp Doctor range – Slurry Seal, Damp Sealer, Face Brick and Masonry sealer, Grout Sealer and Injector,

as well as several leading house brands.

REAL WATERPROOFING ADVICE.FREE ON WhatsApp, 24/7. 👌DON’T GUESS. ASK HARRY.
19/10/2026

REAL WATERPROOFING ADVICE.
FREE ON WhatsApp, 24/7. 👌

DON’T GUESS. ASK HARRY.

02/10/2026

REAL WATERPROOFING ADVICE.
NOW FREE ON WhatsApp, 24/7. 👌
DON’T GUESS. ASK HARRY.

Click on the WhatsApp icon at the bottom of this post or on the website for advice to solve your waterproofing problems: https://flashharry.co.za/

Made here. Trusted here. Proudly South African. 🇿🇦This Heritage Day, we celebrate the products, people and places that m...
24/09/2026

Made here. Trusted here. Proudly South African. 🇿🇦
This Heritage Day, we celebrate the products, people and places that make South Africa home.

Here’s to a South African original. Here’s to Flash Harry. ❤️💛💚💙

Address

6 Mission Road, Anderbolt
Boksburg
1459

Opening Hours

Monday 07:00 - 16:00
Tuesday 07:00 - 16:00
Wednesday 07:00 - 16:00
Thursday 07:00 - 16:00
Friday 07:00 - 15:00

Telephone

+27118922917

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