Flash Harry DIY Waterproofing

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.

17/03/2026

Waterproofing Problem? Ask Harry on WhatsApp - Instant advice. Real Solutions. Tried, Tested, Trusted since 1975.

25/11/2025

☔ Rainy Weather? Let’s Keep the Leaks Out!

With rain expected all week, now’s the time to make sure your home is ready.

🔧 Quick Waterproofing Checks:
• Look for cracked tiles or loose flashings on your roof.
• Clear gutters and downpipes — blockages cause most leaks.
• Seal any cracks or gaps with quality products like Flash Harry DIY Waterproofing.
• Check around windows and exterior walls for spots where water can sneak in.

Stay dry this week — and visit Rouberto for all your waterproofing essentials! 💪☔

📞 011 793 1141
💬 WhatsApp: 082 938 8528
🌐 www.rouberto.co.za

13/11/2025
04/11/2025

Flash Harry Liquid Plastic Plus + is a thick, heavy duty, high build, membrane free, fibre reinforced, rubberised waterproofing formula that forms a seamles...

21/10/2025

Protect your home from leaks with Flash Harry waterproofing products, available at Hot Pot Paints Springs. From roof sealers to damp-proofing, we have everything you need to keep your property dry and damage-free.
Trust the brand that South Africans rely on for waterproofing excellence.

011 362 3071https://f.mtr.cool/kqnwcyrjaa 12th Street, Springs/admin@hotpotsprings.co.za

19/10/2025
Roof Leak? Peel, Stick and Waterproof Instantly! Fast-Flash is an instant, self-adhesive, highly flexible Waterproofing ...
16/10/2025

Roof Leak? Peel, Stick and Waterproof Instantly!

Fast-Flash is an instant, self-adhesive, highly flexible Waterproofing membrane. See just how easily it's done.

Flash Harry Fast Flash is a ready to use, highly flexible, self-adhesive roll of INSTANT waterproofing membrane suitable for all roofing details such as flas...

08/10/2025

🐸✨ Strong enough to protect your roof. Cool enough to be called Frog Skin.
Our Frog Skin Roof Paint is built tough against the elements – and it’s in stock, right here with us.

✔️ Long-lasting finish
✔️ Weather protection
✔️ Easy application

📍 Whitehouse Lighting & Electrical, Trichardt
📞 017 631 1464

And we have a winner! Congratulations to Oranje Mica Paint & Hardware Upington, who walk away with a R5000.00 product vo...
08/10/2025

And we have a winner! Congratulations to Oranje Mica Paint & Hardware Upington, who walk away with a R5000.00 product voucher for Flash Harry DIY Waterproofing products. Thank you for your support and for joining in on the fun!

08/10/2025

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

Website

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