Waterproofing services that stop leaks for good.
26 years sealing commercial, industrial and retail buildings across Pretoria and Johannesburg. Guaranteed work, insured teams, and a free on-site assessment within 24 hours.
- 10-year workmanship warranty
- Public liability insured
- SANS-compliant systems
Gauteng’s most trusted waterproofing contractors.
Since 1999, Sicon Group has waterproofed warehouses, factories, shopping centres, schools and office parks across Pretoria and Johannesburg. We pair industry-leading materials with skilled, in-house teams so every project is delivered on time, on spec, and backed by a written guarantee.
- Commercial, industrial and retail only
- SANS 10400 and SANS 10021 compliant systems
- In-house teams, no subcontracted labour
- Detailed photo reports on every project
Complete waterproofing services for every building.
From flat-roof membranes to basement tanking, we deliver a watertight envelope across every surface of your property.
Flat roof waterproofing
Liquid-applied and torch-on membrane systems for concrete and IBR flat roofs. Seamless, UV-stable, fully bonded.
Metal roof waterproofing
Rust treatment, joint sealing and elastomeric overcoat systems that stop leaks at every screw, lap and ridge.
Balcony & parking deck
Trafficable polyurethane systems that protect concrete decks while staying slip-resistant under heavy footfall.
Basement & below-ground
Negative and positive-side tanking using cementitious crystalline systems for dry, defect-free basements.
Damp-proofing & walls
Rising-damp injections, plaster repair and silane-siloxane wall coatings to keep external walls dry year-round.
Leak detection & repair
Camera, smoke and electronic leak detection followed by targeted repair. We find the source, not just the symptom.
Trusted across every commercial sector.
From warehouse roofs to retail centres, we deliver the same engineered systems and written guarantees across every Gauteng industry.
Warehouses
Large-span IBR and concrete roofs sealed without disrupting daily logistics.
Factories
Chemical-resistant systems engineered for production environments.
Retail centres
Phased, after-hours scheduling so trading and tenants stay unaffected.
Office parks
Multi-block estates serviced with one site supervisor and one guarantee.
Schools & campuses
Holiday-scheduled installs that protect classrooms, halls and labs.
Healthcare
Low-VOC, low-odour systems suitable for hospitals and clinics in use.
A look at our work in Gauteng.
Selected commercial waterproofing installations from across Pretoria and Johannesburg.
Why Gauteng’s biggest brands keep calling Sicon.
Written guarantee
Every project ships with a 5 to 10 year written workmanship guarantee, backed by Sicon as a company.
In-house teams
300+ trained Sicon technicians on the payroll. No labour brokers, no fly-by-night subcontractors.
Engineered systems
Specifications built around your building, not a one-size-fits-all roll of bitumen from the hardware store.
Fast response
Free on-site assessment within 24 hours and emergency leak callouts the same day across Gauteng.
Four steps from leak to guarantee.
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01
Free assessment
We visit the site within 24 hours, inspect every detail and identify the true source of the problem.
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02
Detailed quote
Clear, itemised proposal with the exact system, materials and warranty period. No surprises.
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03
Expert installation
Sicon’s in-house team installs the agreed system to spec with daily site reports and photos.
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04
Written guarantee
Final flood test, sign-off and a signed multi-year guarantee handed over with the project file.
Servicing all of Gauteng from Pretoria to Johannesburg.
Active project teams across the province with daily routes through Centurion, Midrand, Sandton, Randburg and the East Rand.
Pretoria
- Centurion
- Pretoria East
- Hatfield
- Menlyn
- Rosslyn
- Silverton
Johannesburg
- Sandton
- Randburg
- Roodepoort
- Fourways
- Rosebank
- Midrand
East Rand
- Kempton Park
- Edenvale
- Boksburg
- Benoni
- Germiston
- OR Tambo precinct
Trusted by property managers across Gauteng.
Sicon waterproofed our entire Pretoria warehouse roof during the rainy season without a single delay. Five years later and still bone dry.
Professional from quote to handover. The team in Johannesburg cleaned up perfectly every day. Best waterproofing contractor we have used.
Their leak detection found a problem two other contractors had missed. Quoted fairly, fixed it once, and gave us a written guarantee.
Common questions about our waterproofing services.
How long does a waterproofing project take?
Most commercial roofs are completed in 3 to 10 working days depending on size, system and weather. We provide a written programme with the quote.
What guarantee do you offer?
Sicon issues a written workmanship guarantee of 5 to 10 years depending on the system specified, in addition to the manufacturer’s material warranty.
Do you work during the rainy season?
Yes. We plan work around weather forecasts and use rapid-set systems so your building stays operational and watertight throughout the project.
Do you only service commercial buildings?
Yes. Sicon focuses exclusively on commercial, industrial and retail properties across Pretoria and Johannesburg.
How quickly can you start?
Free site assessment within 24 hours. Approved projects can usually start within 5 to 7 working days, sooner for emergencies.
Get your free waterproofing quote.
Tell us about your building. We respond within one working day with a free on-site assessment and a clear, itemised quote.