This anti graffiti coating FAQ answers the questions property managers, municipalities, and facility owners ask most often. It covers SI-COAT 528AG directly, and it also covers general anti-graffiti coating questions relevant across South Africa. Use it as a technical reference before specifying a graffiti protection system.
SI-COAT 528AG Anti-Graffiti Coating FAQ
What is SI-COAT 528AG anti-graffiti coating?
SI-COAT 528AG is a single-component, room-temperature vulcanising silicone coating. Furthermore, CSL Silicones manufactures it as a permanent, non-sacrificial graffiti protection system. The coating chemically bonds to the host surface. As a result, it remains in place through repeated graffiti removal cycles.
How does SI-COAT 528AG remove graffiti?
Cold water pressure washing at 1,200 psi removes fresh graffiti from a SI-COAT 528AG surface. The process requires no chemical solvents. Consequently, contractors avoid the ongoing chemical costs that sacrificial systems demand.
What happens if graffiti sits for more than 10 days?
A warm water pressure wash handles graffiti left in place for over 10 days. In rare cases involving specialty paints cured for extended periods, a biodegradable surfactant with a cleaning pad lifts the remaining pigment. Immediate rinsing then completes the removal.
Is SI-COAT 528AG permanent or sacrificial?
SI-COAT 528AG is permanent and non-sacrificial. Unlike sacrificial coatings, it does not wash away with the graffiti during removal. Therefore, the surface never needs reapplication after a cleaning cycle.
What surfaces can SI-COAT 528AG protect?
SI-COAT 528AG bonds to metal, concrete, brick, stone, wood, fiberglass, and most pre-existing coatings. In addition, it suits a wide range of infrastructure and building types across South Africa.
Does SI-COAT 528AG require a primer?
Most substrates do not need a primer before application. The coating bonds directly to the host surface. However, contractors should still confirm substrate condition before application begins.
Does SI-COAT 528AG require abrasive blasting?
No. SI-COAT 528AG bonds chemically to the surface, so abrasive blasting is not necessary before application. Therefore, this reduces preparation time and cost on large infrastructure projects.
How long does SI-COAT 528AG take to cure?
The coating becomes tack-free after 80 minutes. Full physical characteristics develop over 7 days. As a result, surfaces return to service quickly while the coating continues to harden.
What is the VOC content of SI-COAT 528AG?
SI-COAT 528AG contains 70 grams per litre of VOCs. This figure meets California SCAQMD standards, a global benchmark for low-VOC coatings. Consequently, the product suits environmentally sensitive applications.
How much coverage does SI-COAT 528AG provide?
Coverage ranges from 4.0 to 7.2 square metres per litre, depending on dry film thickness. Furthermore, volume solids sit at 92 percent, so the coating spreads efficiently across large surfaces.
Can SI-COAT 528AG withstand extreme temperatures?
Yes. The coating maintains stability between minus 60 and plus 200 degrees Celsius. Therefore, it performs reliably in both coastal and inland South African climates.
Does SI-COAT 528AG fade or discolour over time?
CSL Silicones tests every colour to 5,000 hours of accelerated UV weathering. This testing confirms long-term colour stability. Facility owners can therefore rely on consistent appearance for years.
How is SI-COAT 528AG applied?
Airless spray application suits large areas such as bridges, walls, and transport infrastructure. Brush or roller application works for smaller areas, though multiple coats may be needed to reach the correct dry film thickness.
What is the shelf life of SI-COAT 528AG?
The product carries a 12-month shelf life from the date of manufacture. Additionally, storage below 32 degrees Celsius in the original, unopened container preserves this shelf life.
General Anti-Graffiti Coating Questions
What is anti-graffiti coating?
Anti-graffiti coating is a protective layer applied to a surface to prevent paint, ink, and marker from bonding permanently. However, coatings fall into two categories: sacrificial and permanent. Each category behaves differently during removal.
Does anti-graffiti coating actually work?
Yes, when specifiers choose the correct system for the application. A permanent coating like SI-COAT 528AG allows repeated graffiti removal without reapplication. A sacrificial coating, by contrast, requires renewal after every cleaning cycle.
What is the difference between permanent and sacrificial anti-graffiti coatings?
Sacrificial coatings wash away with the graffiti during removal, so contractors must reapply them after every incident. Permanent coatings like SI-COAT 528AG remain bonded to the surface. This difference drives long-term cost and maintenance planning.
How is graffiti normally removed without a protective coating?
Unprotected surfaces typically need chemical solvents, abrasive blasting, or repainting to remove graffiti. Moreover, these methods often damage the underlying substrate. In addition, they demand repeated labour and material spend every time graffiti reappears.
Is graffiti illegal in South Africa?
Yes. South African law classifies graffiti as malicious damage to property, a criminal offence. Despite this, enforcement remains difficult across large infrastructure networks, which is why physical protection matters.
Why do municipalities need anti-graffiti protection?
Municipalities manage large surface areas across transport, civic, and public infrastructure. For instance, PRASA alone has absorbed over R7.64 billion in theft and vandalism losses across five years. Consequently, protective coatings reduce the ongoing burden of graffiti removal on already stretched budgets.
Can anti-graffiti coating protect heritage buildings?
Yes, provided the coating suits the substrate and finish requirements. SI-COAT 528AG applies to stone, brick, and masonry commonly found on heritage structures. A semi-gloss finish preserves the visual character of the original surface.
Where can facility managers buy anti-graffiti coating in South Africa?
TSS supplies SI-COAT 528AG as the exclusive Sub-Saharan Africa distributor for CSL Silicones. Contact TSS directly for product specifications, coverage calculations, and application guidance across South Africa, Zambia, DRC, Tanzania, and Namibia.
For technical specifications, coverage calculations, or a project quote, contact TSS directly at /contact-us/. Additional product background sits on the SI-COAT 528AG FAQ page at /faq/.
Proud distributors of CSL Silicones.
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