Gauteng’s Leading Waterproofing Companies
Waterproofing Companies Gauteng
Industrial, commercial and retail waterproofing solutions in Gauteng
Industrial, commercial, and retail waterproofing solutions across Johannesburg and Pretoria. Sicon Group – one of Gauteng’s most trusted waterproofing companies, delivering guaranteed results since 1999.
Waterproofing Services in Gauteng
Why Sicon Group
Not All Waterproofing Companies Are Equal
Trusted commercial and industrial waterproofing specialists in Gauteng
When a waterproofing failure hits your facility, the cost isn't just the repair — it's the operational downtime, stock damage, and structural deterioration that follows. Choosing the right waterproofing company in Gauteng is a critical decision.
Sicon Group has been one of Gauteng's most trusted waterproofing companies for over 25 years. We serve industrial parks, commercial office campuses, and retail centres across Johannesburg and Pretoria — providing comprehensive waterproofing solutions that are engineered to last.
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Our Services
Complete Waterproofing Solutions
As one of Gauteng’s specialist waterproofing companies, Sicon Group offers a full spectrum of waterproofing services — from assessment through to application and maintenance.
Flat Roof Waterproofing
Complete waterproofing solutions for flat and low-pitch roofs on industrial, commercial, and retail buildings. We diagnose existing failures and apply the correct system for your roof type and drainage layout.
Torch-On Membrane Systems
Bituminous torch-on waterproofing membranes applied to prepared substrates, providing a robust, seamless barrier. Ideal for high-traffic flat roofs, parking decks, and exposed industrial surfaces.
Liquid-Applied Waterproofing
Seamless, flexible liquid membranes are applied to complex roof geometries, penetrations, upstands, and areas where traditional membranes cannot achieve a perfect seal. Polyurethane and acrylic systems available.
Basement Waterproofing
Positive and negative-side waterproofing systems for basements, underground car parks, and substructure elements. We prevent water ingress at the source, protecting structural concrete from long-term deterioration.
Balcony & Podium Waterproofing
Specialist waterproofing for elevated slabs, balconies, terraces, and podium decks. We ensure correct falls, drainage, and edge detailing — critical for preventing long-term slab damage in commercial buildings.
Joints, Flashings & Gutters
Correctly detailed expansion joints, perimeter flashings, parapet cappings, and gutter systems are the most common waterproofing failure points. We repair, re-seal, or replace all these elements to manufacturer standard.
Sectors We Serve
Waterproofing for Every Commercial Sector
Sicon Group focuses exclusively on industrial, commercial, and retail waterproofing — we understand the demands and constraints of large-scale commercial buildings better than any residential contractor.
Industrial
Factories, warehouses, distribution centres, and manufacturing plants. Large-footprint flat roofs, complex drainage, and high-risk leaks require experienced contractors.
- Warehouses & distribution centres
- Factories & manufacturing plants
- Cold storage & logistics hubs
- Industrial parks across Gauteng
Commercial
Office parks, campuses, and mixed-use developments. Waterproofing failures disrupt tenants and impact property value.
- Office parks & campuses
- Multi-storey buildings
- Mixed-use developments
- Property portfolios
Retail
Shopping centres, malls, and big-box retail. We coordinate around trading hours to minimise disruption.
- Shopping centres & malls
- Strip malls
- Big-box retail stores
- Food courts & anchor tenants
How We Work
Our Waterproofing Process
A methodical, quality-controlled process is what separates professional waterproofing companies from the rest. Every Sicon Group project follows the same proven steps.
Free Site Assessment
Our specialist visits your site, inspects all problem areas, evaluates existing waterproofing, and identifies the root cause of any leaks or failures — at no charge and no obligation.
System Specification & Quotation
We specify the correct waterproofing system for your substrate, exposure, and budget — and provide a detailed, itemised written quotation with no hidden costs.
Surface Preparation
Correct preparation is everything in waterproofing. We clean, prime, repair cracks, clear drains, and prepare the substrate to ensure the waterproofing system bonds and performs as specified.
Waterproofing Application
Trained technicians apply the specified system to manufacturer’s tolerances. All joints, upstands, penetrations, and details receive special attention — the most common failure points in any waterproofing system.
Flood Test, Inspection & Sign-Off
Where applicable, a flood test is conducted before final sign-off. You receive all product data sheets, warranty certificates, and a recommended inspection schedule.
Every waterproofing project is completed to SANS specification and manufacturer requirements, ensuring your warranty remains valid and your building is fully protected.
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We Specify the Right System for Your Building
Not all waterproofing systems are the same. Sicon Group specifies the correct product based on your roof type, substrate condition, traffic exposure, and budget — never a one-size-fits-all approach.
We work with leading South African and international waterproofing product manufacturers to ensure all systems applied carry both workmanship and product warranties.
Torch-On Bituminous Membrane
SBS-modified bituminous membranes heat-welded to the substrate. Durable, proven, and ideal for flat roofs in Gauteng's hail-prone environment.
Polyurethane Liquid Membrane
Seamless, flexible two-component PU membranes for complex geometries, penetrations, and areas requiring UV-stable, trafficable surfaces.
Acrylic Waterproofing Coating
Water-based elastomeric coatings applied to IBR sheeting, concrete, and fibre cement — ideal for re-waterproofing as part of a roof restoration programme.
Cementitious Waterproofing
Crystalline and cementitious systems for basements, wet areas, and substructure elements where bonding to concrete is required.
Sheet Membrane Systems
Cold-applied self-adhesive and loose-laid sheet membranes for below-slab, podium, and green roof applications with protection board.
Service Area
Waterproofing Companies Across All of Gauteng
Sicon Group operates across the full Gauteng province — with active waterproofing teams deployed across Johannesburg, Pretoria, the East Rand, West Rand, and all key industrial corridors.
Our established local presence means faster response times, on-site flexibility, and no expensive out-of-area travel costs.
Client Feedback
What Gauteng Businesses Say
Sicon Group has built lasting relationships with industrial, commercial, and retail property owners and managers across Johannesburg and Pretoria.
We had a persistent flat roof leak in our warehouse in Kempton Park that had been unsuccessfully patched twice before. Sicon Group came in, identified the root cause immediately, and applied a full liquid membrane system. It's been completely dry through two rainy seasons. Excellent, professional company.
Sicon Group waterproofed three of our commercial office buildings in Midrand over an 18-month period. Their specification process was thorough, and the workmanship has been flawless. They're one of the few waterproofing companies that actually follow up after a project — highly recommended.
Our shopping centre in Pretoria North had severe leaking through the food court roof, impacting two anchor tenants. Sicon Group completed the full waterproofing scope over a weekend to avoid trading disruption. Zero leaks since. Their understanding of retail constraints sets them apart from other waterproofing companies.
Ready to Fix Your Waterproofing?
Get a free, no-obligation site assessment from one of Gauteng’s most trusted waterproofing companies.
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Quote
Contact Sicon Group for a free site assessment and waterproofing quotation. We work with industrial, commercial, and retail properties across Johannesburg and Pretoria.
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About Sicon Group
Sicon Group is a leading provider of professional industrial roofing, repair, maintenance and waterproofing services across Johannesburg, Pretoria and Gauteng. We combine expertise, quality materials and a client-first approach to deliver superior solutions.
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Contact Us
Email: dwain@sicongroup.co.za
Phone: 083 345 4649
Address: 119 Pretoria Road, Rynfield, Benoni, Gauteng