Performance Coatings
Performance Coatings: The Airless Spray-on System
On a large industrial roof, how a coating is applied matters just as much as what's in the tin. Sicon Group's airless spray-on system lays down a seamless, uniform performance coating across an entire roof — faster, more consistently, and into every rib, seam and detail that a brush or roller would struggle to reach.
What Is an Airless Spray-on Coating System?
Airless spraying pumps the coating at high pressure through a fine tip, atomising it into an even, controlled mist. Applied across a properly prepared roof, it builds up a seamless, monolithic membrane — one continuous layer with no brush joins, no roller laps and no weak seams for water to find.
That continuity is the whole point. A roof coating only performs as well as its weakest joint, and spray application removes the joints entirely — the membrane flows over the flat sheets, down into the corrugations, and around every fixing and penetration as one unbroken skin.
Why Spray Beats Brush and Roller on a Big Roof
For a house-sized area, a brush or roller is fine. For a factory or warehouse roof, the airless system wins on every measure:
- Seamless coverage — no brush lines or roller laps; the coating flows into ribs, seams and profiles as one skin
- Uniform film thickness — a consistent dry-film thickness across the whole roof, which is exactly what determines how long the coating lasts
- Speed — a large roof is coated dramatically faster, cutting the downtime and cost of the project
- Reaches the awkward areas — corrugations, flashings and penetrations get the same coverage as the open flat areas
- Cleaner finish, less waste — a controlled spray lays down an even, professional finish with minimal material lost
The Application Process
Preparation
The roof is cleaned, corrosion is treated and the surface is primed. Spray or not, adhesion is decided here — a coating over a dirty roof will lift, however well it's applied.
Detailing
Joints, laps, fixings and penetrations are reinforced first, so the most vulnerable points carry extra protection before the main coats go on.
Spray Application
The performance coating is sprayed in controlled passes to the specified dry-film thickness — as many coats as it takes to build the full, seamless membrane.
Curing & Sign-Off
The coating is left to cure properly, then inspected for coverage and thickness, and handed over with a workmanship guarantee.
What the Finished System Delivers
Applied correctly, an airless spray-on coating gives you:
- A seamless waterproofing membrane with no joins for water to exploit
- Reflective, cool-roof options that cut heat gain and ease the load on cooling
- Corrosion protection sealing the sheeting from the weather
- Flexibility to move with the roof's thermal expansion without cracking
- UV resistance built for the intensity of the Highveld sun
"A coating is only ever as good as its weakest joint. The airless spray-on system doesn't have joints — it lays one continuous membrane across the entire roof, which is exactly why it outlasts a brushed or rolled finish on a large industrial roof."
Coat Your Roof the Right Way
If your roof is due for a performance coating, the application method makes all the difference. Talk to Sicon Group about the airless spray-on system — nationwide.
Contact Sicon Group