Metal Roof Rust Treatment & Waterproof Repaint in Meyerton
Location: Meyerton, Gauteng
Service: Metal Roof Rust Treatment, Waterproofing & Repainting
Concealed-fix metal sheeting only stays weatherproof for as long as its coating holds, and this case study looks at a roof that had well and truly run out of protection. The original finish had faded to a dull, chalky grey, rust was bleeding out from the screw fixings and flashing joints, and the sheeting had stopped doing the one job a coating is there for. It’s a pattern SealAll Roof Contractors sees often on older metal roofs, and one that gets pricier to fix the longer it’s ignored.
The problem
Sun, hail and the Highveld’s swinging temperatures had steadily broken down the old paint system, leaving the panels streaky and worn. More seriously, several sections had active rust creeping out around the fixing points and side-laps. Corrosion like this doesn’t stay put — it works its way under the surrounding paint and into the steel itself, so any repaint that skips proper rust treatment and fixing protection is just a cosmetic fix waiting to fail.
The solution
As an approved SealPro applicator, SealAll Roof Contractors worked through a full rust-treatment and waterproofing sequence built specifically for profiled metal roofing, rather than painting straight over the problem:
- High-pressure clean and degrease. The full roof was pressure-washed and degreased to strip loose paint, chalk, dirt and oxidation back to a sound, coatable surface.
- Treat the rust. Every corroded section was mechanically prepared and treated with a rust converter to neutralise the active corrosion before it could spread further.
- Prime with SealPro Purple Prime. A dedicated metal primer was applied to key the topcoat to the bare steel and add a further barrier against future rust.
- Seal every fixing with SealPro ScrewSeal. Screw heads and lap joints are where metal roofs almost always start leaking and rusting, so each vulnerable point was individually sealed.
- Two coats of premium roof paint. The full roof was finished in two coats of a durable charcoal roof coating, restoring an even, weather-resistant surface from ridge to eaves.
The result
The transformation speaks for itself: a tired, rust-spotted roof reading dull grey from the ground is now a crisp, uniform charcoal finish, with the corrosion arrested and every fixing point sealed against future rust. Across roughly 275 m² of sheeting, the roof now carries a coating system built to handle years of sun, hail and summer storms, not just a fresh coat of paint over an unresolved problem underneath.
If your metal roof is fading, chalking or showing the first signs of rust bleeding from the screws, it’s far cheaper to treat and repaint it now than to replace the sheeting later. SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Meyerton and the greater Vaal region.
Related SealAll Roof Contractors services: roof waterproofing · roof coating and painting · roof maintenance across the Vaal Triangle.
Contact SealAll Roof Contractors for a free inspection and quote: 072 694 9243 · roofcontractors.co.za
#MetalRoofRepainting #Meyerton #VaalRoofing #SealProApplicator
Metal Roof Waterproofing & Painting in Sasolburg
Location: Sasolburg, Free State
Service: Metal Roof Rust Treatment, Waterproofing & Painting
Corrugated metal roofs take a beating from Highveld sun and summer hail, and once the paint layer starts to chalk and the joints start to lift, rust moves in fast. This case study walks through a typical metal roof rescue: a sheeting roof that had gone from faded and rusted to fully sealed, waterproofed and repainted.
The problem
The roof sheeting had faded to a patchy, chalky finish, with rust taking hold across several panels. The worst damage sat at the overlaps and screw lines, where old sealant had cracked and lifted and corrosion had eaten right through in places, leaving open holes and blistered metal. Left alone, those failed joints and rusted fixings are exactly where water finds its way into the roof structure. A low-pitch section of the roof also had old waterproofing that had worn thin and was no longer sealing reliably.
The solution
As an approved SealPro applicator, the crew followed a full remedial system rather than simply painting over the damage:
- High-pressure clean and degrease of the entire roof to strip chalking, dirt and loose material back to a sound surface.
- Rust treatment — corroded sections were wire-cleaned and treated with a rust converter to stop the corrosion spreading further.
- Prime the sheeting with a purpose-made metal primer to lock down the substrate and give the coating system something to grip.
- Seal the joints and screw lines — weak points were reinforced with a flexible sealant and stretch tape, and every fixing sealed so the overlaps and fasteners are fully watertight.
- Waterproof the low-pitch section with a reinforced membrane system — primer, flexible detailing at the joints, then a fibre-reinforced topcoat for a seamless, durable membrane.
- Paint the roof with two full coats of high-quality roof paint for a rich, even, UV-stable finish.
The result
The tired, rusted roof reads as a clean, uniform finish from ridge to eaves, with the joints and screw lines properly sealed underneath rather than just hidden. The low-pitch section is protected by a continuous waterproof membrane, and the whole roof is set up to handle Vaal-region weather for years to come. A cosmetic refresh and a genuine waterproofing upgrade in one project — the kind of job that keeps a metal roof watertight for another decade instead of just looking good for one season.
If your roof sheeting is showing the same warning signs — chalky paint, rust at the overlaps, sealant lifting at the screw lines — it’s worth having it inspected before the next heavy rain finds the gap. SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Sasolburg and the greater Vaal region.
Related SealAll Roof Contractors services: roof waterproofing · roof coating and painting · roof maintenance across the Vaal Triangle.
Contact SealAll Roof Contractors for a free inspection and quote: 072 694 9243 · roofcontractors.co.za
#MetalRoofWaterproofing #Sasolburg #VaalRoofing #SealProApplicator
Metal Roof Rust Treatment & Waterproof Repaint in Meyerton
Location: Meyerton, Gauteng
Service: Metal Roof Rust Treatment, Joint Waterproofing & Repainting
Corrugated metal sheeting is only as good as its coating, and this case study looks at a roof where that coating had well and truly failed. The paint film had worn through in patches, bare metal was exposed along the ribs and screw lines, and in several spots surface rust had eaten clean through the sheeting. It’s a familiar pattern on older metal roofs, and one that gets more expensive to put right the longer it sits.
The problem
Years of sun and rain had broken down the roof’s protective coating. Flaking paint left bare steel exposed along the ridges and fastener lines, and active corrosion had progressed far enough in places to open small holes straight through the sheet — direct paths for water into the roof space. The waterproofing on the joints and screw fixings had also broken down, turning every seam and fastener into a potential leak point. Corrosion like this doesn’t slow down on its own; a few rust spots left untreated becomes sheet replacement.
The solution
As an approved SealPro applicator, SealAll Roof Contractors worked through a full remedial sequence rather than painting over the damage:
- Clean and prep. The full roof area was washed down and flaking sections cleaned back by hand to expose sound, coatable metal.
- Treat the rust. A rust converter was applied to every corroded section to neutralise active corrosion before any coating went on.
- Reseal the joints and fixings. Waterproofing was renewed along the roof joints and screw lines, closing off the seams that were letting water through.
- Prime. Repaired and treated sections were primed to give the topcoat a stable, adhesive base and an extra barrier against future rust.
- Two coats of topcoat. The roof was finished in two full coats of a durable, UV-resistant roof paint for even, long-term coverage.
Running the rust conversion, joint waterproofing and topcoat as one connected system — not three separate patch jobs — is what keeps a repaint like this holding up for years rather than months.
The result
The roof went from a faded, rust-mottled surface with active leak points to a uniform, richly coated finish across every ridge and valley. The joints and screw lines are sealed, the corroded sections are treated and covered, and the sheeting now carries a fresh coating built to handle the next few years of Highveld sun and summer storms. It’s a straightforward job with a lasting payoff: a roof that looks sharp from the street and, more importantly, has stopped letting water in.
If your metal roof is showing flaking paint, rust at the fixings, or leaks along the joints, the same process can bring it back to a sealed, protected finish. SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Meyerton and the greater Vaal region.
Related SealAll Roof Contractors services: roof waterproofing · roof coating and painting · roof maintenance across the Vaal Triangle.
Contact SealAll Roof Contractors for a free inspection and quote: 072 694 9243 · roofcontractors.co.za
#MetalRoofMaintenance #Meyerton #VaalRoofing #SealProApplicator