Concrete Roof Slab Waterproofing in Meyerton
Location: Meyerton, Gauteng
Service: Concrete Roof Slab Waterproofing (ArmTec HyperFlex System)
Flat concrete roof slabs are common on homes, blocks of flats and commercial buildings around Meyerton, and every one of them eventually reaches the end of its waterproofing life. In this case study, the roof slab had cracked along shrinkage joints, the surface coating had delaminated and worn away, and the building below was no longer protected from water. The owner brought in SealAll Roof Contractors to strip the roof back, repair every movement point and install a full reinforced waterproofing membrane over the entire slab.
As an approved SealPro applicator, SealAll Roof Contractors installs the complete SealPro ArmTec HyperFlex waterproofing system — the correct primer, crack reinforcement, embedded mesh and topcoat, applied in the correct sequence, so the finished membrane bridges movement instead of splitting open again.
The problem: a cracked, delaminated concrete roof slab
Flat concrete roofs live or die on their ability to move without cracking. On slabs like this one, the concrete opens up along shrinkage cracks and construction joints over time, and the original surface coating delaminates and weathers away. Debris and standing water collect on the roof, and every crack becomes a direct path for water into the ceilings and structure below. Left untreated, a failed slab leads to damp, spalling concrete, rusting reinforcement and ongoing interior damage.
The solution: the SealPro ArmTec reinforced membrane system
Our waterproofing team worked through the proven SealPro ArmTec sequence for concrete slabs:
- Clean and prepare — the full slab was cleared of debris, loose material and standing water, then cleaned back to a sound, stable surface.
- Prime — the slab was primed with Penetrar, SealPro’s deep-penetrating primer, to bind the concrete and lock down porosity before any waterproofing layer went on.
- Reinforce the cracks and joints — every crack, delaminated joint and movement point was treated with Flex and StretchSeal membrane, sealing and bridging the roof’s weakest points first.
- ArmTec mesh membrane — a coat of HyperFlex was applied and ArmTec reinforcing mesh was rolled into it across the full surface, then encapsulated with a second HyperFlex coat, creating one continuous reinforced membrane that flexes with the slab instead of cracking with it.
- Topcoat — the system was finished with HydroSeal HF waterproof topcoat, delivering a clean, seamless, UV-resistant surface across the entire roof.
The result: a fully sealed, seamless flat roof
The finished slab is now a single, continuous waterproof membrane — no exposed cracks, no open joints and a clean, uniform finish from edge to edge. The building is protected against Highveld summer storms, and the reinforced ArmTec system is built to move with the structure for the long term. Every SealAll Roof Contractors project is backed by our workmanship guarantee and a warranty certificate on completion.
SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Meyerton and the greater Vaal region, installing genuine SealPro ArmTec waterproofing systems for concrete roof slabs, flat roofs and crack repair.
Related SealAll Roof Contractors services: concrete slab waterproofing · roof waterproofing · torch-on alternative waterproofing across the Vaal Triangle.
Contact SealAll Roof Contractors for a free inspection and quote: 072 694 9243 · roofcontractors.co.za
#RoofSlabWaterproofing #Meyerton #VaalRoofing #SealProApplicator
Tile Roof Ridge Waterproofing & 2-Coat Repaint in Meyerton
Location: Meyerton, Gauteng
Service: Tile Roof Ridge Waterproofing & 2-Coat Roof Paint
This double-storey tile roof case study shows what happens when ridge maintenance gets skipped for years. Loose ridge cement, weathered tiles, and a build-up of grime had spread across every roof plane, and the homeowner eventually brought in a specialist crew to rake out, waterproof, and repaint the entire roof system.
The problem
Up close, the tiles told the story: patches of lichen and moss, dust and pollen baked into the surface, and ridge lines where the old pointing cement had cracked and started lifting away from the tiles. Loose ridge cement is more than cosmetic — once it lets go, water tracks straight down through the ridge line and into the roof structure. With no reinforcement or waterproofing membrane over the ridges, every rainy season was pushing the problem further along.
The solution
The applicator on this job is an approved SealPro applicator, and the ridge system installed followed SealPro’s specified sequence rather than a generic patch-and-paint approach:
- Prep and pressure wash — the full roof area was high-pressure washed to strip dust, lichen, and loose material back to a clean, sound tile surface, ready to accept coating.
- Rake out and re-bed the ridges — every loose or cracked section of ridge cement across all 26 ridge runs was raked out and filled with fresh fibre cement, giving the ridge caps a solid, stable base again.
- Prime the substrate — the repaired ridges were primed to promote proper adhesion before waterproofing, so the membrane bonds correctly to the cementitious surface instead of sitting loose on top of it.
- Waterproof with SealPro’s Stretch Seal System — a flexible, reinforced waterproofing membrane was applied continuously along every ridge, bridging the joints between tiles and cement so water can no longer track in at the weak points.
- Seal the flashing details — the chimney flashing and a small adjoining slab section, both common leak points where different roof surfaces meet, were waterproofed with the same detail-strip system.
- Two coats of roof paint — once the waterproofing and repairs had cured, the roof was finished with two coats of roof paint in Slate, refreshing the whole roof’s appearance and adding a further UV-resistant, weatherproof layer over the tiles.
The result
The ridge network across every roof plane is now fully re-bedded and waterproofed with a continuous, flexible membrane instead of relying on aging pointing cement — the single biggest source of tile roof leaks. The chimney and slab flashing details are sealed the same way, closing off the other classic entry points for water. With the roof properly prepped, primed, and finished in two coats of Slate roof paint, the homeowner is left with a roof that’s watertight at every ridge and flashing join, and looking sharp from the street for years to come.
If your tile roof ridges haven’t been checked in a few years, or you’re seeing loose cement or moss build-up along the ridge caps, it’s worth having them inspected before the next storm season.
Related SealAll Roof Contractors services: weatherproof roof tiles · roof waterproofing · roof coating and painting across the Vaal Triangle.
Contact SealAll Roof Contractors for a free inspection and quote: 072 694 9243 · roofcontractors.co.za
SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Meyerton and the greater Vaal region.
#TileRoofWaterproofing #Meyerton #VaalRoofing #SealProApplicator
Concrete Roof Slab Waterproofing in Meyerton
Location: Meyerton, Gauteng
Service: Concrete Roof Slab Waterproofing (ArmTec HyperFlex System)
When a flat concrete roof slab starts to leak, the damage rarely stays on the roof. It works its way down through the ceiling and shows up on the walls of the rooms below. That is the pattern behind almost every slab call-out SealAll Roof Contractors handles across the Vaal: old waterproofing that has reached the end of its life and needs a full remedial overhaul rather than another patch.
The problem
On a typical failing slab, the existing waterproofing membrane has delaminated and cracked across large sections of the roof. Years of sun exposure, thermal movement and standing water lift the old coating away from the concrete, leaving weathered, spalling surfaces and open cracks at the joints and parapet junctions. Water tracks under the failed membrane and into the structure, with damp showing up on interior walls and around window and door reveals in the rooms below. Every affected area of the slab, from bedrooms to sculleries, garages and chimney upstands, tends to show the same tired, failing coating.
The SealAll Roof Contractors solution
As an approved SealPro applicator, SealAll Roof Contractors strips the project back to sound substrate and rebuilds the waterproofing as a single monolithic system:
- Prepare and prime. Every square metre of the slab is cleaned back, loose material removed and the concrete primed with Penetrar to lock down the surface and give the new system a solid key.
- Reinforce the weak points. Cracks, delaminated joints and parapet junctions are bridged with StretchSeal membrane, sealing the exact spots where movement has opened the old coating.
- Install the ArmTec system. A HyperFlex base coat is applied and ArmTec reinforcing mesh embedded into it, then over-coated to create a seamless, fully bonded and elastic waterproof layer across the whole slab.
- Seal the details. Roof vents, pipe penetrations and parapet upstands are carefully worked in so there are no gaps left for water to find.
- Top coat and protect. The system is finished with HydroSeal HF and sealed with a clear protective coat, leaving a clean, UV-stable grey surface that reflects heat and sheds water.
The result
The roof ends up with a continuous, flexible waterproofing skin that moves with the building instead of cracking against it. Valleys drain cleanly, penetrations stay sealed and interior damp problems are cut off at their source. Backed by a workmanship guarantee and SealPro’s manufacturer warranty, a slab treated this way is set up for many dry seasons ahead.
If your flat roof or concrete slab is leaking, delaminating or staining the ceilings below, the sooner it is assessed the less it costs to fix. SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Meyerton and the greater Vaal region.
Related SealAll Roof Contractors services: concrete slab waterproofing · roof waterproofing · torch-on alternative waterproofing across the Vaal Triangle.
Contact SealAll Roof Contractors for a free inspection and quote: 072 694 9243 · roofcontractors.co.za
#RoofSlabWaterproofing #Meyerton #VaalRoofing #SealProApplicator
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 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
Tile Roof Leak Repair & Waterproofing in Meyerton
Location: Meyerton, Gauteng
Service: Tile Roof Leak Sealing & Waterproofing
Here’s a recent tile roof leak repair that shows how much damage a single overlooked junction can cause. The property had a concrete tile roof that stepped down into a lower IBR sheeting section — a common layout on homes with a split roofline. Every time it rained hard, water found its way back under the tiles instead of running off, and damp patches kept appearing on the ceiling below.
The problem beneath the tiles
From ground level the roof looked fine. Up close, the picture was different: the first line of concrete tiles was overhanging directly onto the lower IBR sheeting, right where the pitch dropped below the 17.5° minimum that concrete tiles need to shed water properly. At that low-pitch transition, the flute gaps between the tiles, the gutter line, and the overlaps had all filled up with leaves and windblown debris over time. Instead of draining away, rainwater was sitting against the substrate and working its way backward under the tile courses — exactly the kind of slow, hidden leak that only shows up as a stain once it has already tracked through the ceiling board.
The solution
Rather than stripping the whole roof, the applicator ran a targeted remedial sequence focused on the actual point of failure:
- Remove the overhang — the first line of concrete tiles overhanging onto the IBR sheeting below the 17.5° pitch line was lifted and removed, exposing the transition where water had been collecting.
- Clear and inspect — the flute gaps and the channel between the IBR sheeting and the second line of tiles were cleared of built-up debris so the substrate could be properly assessed.
- Close the flute gaps — the open flutes in the concrete tiles were sealed closed to stop water and debris re-entering the same channels.
- Seal the transition — the junction between the IBR sheeting and the second line of tiles was sealed as one continuous, watertight run.
- Reinstate and finish — the tiles were reset and the repaired section finished flush with the surrounding roofline.
Because the roof geometry itself was working against drainage at that low-pitch section, the fix concentrated on sealing and redirecting water at the junction rather than trying to fight the pitch.
The result
The tile-to-sheeting junction is now sealed and debris-free, closing off the path water was using to get under the tiles. The repair addressed the root cause — an under-pitched overlap collecting water and organic matter — rather than just patching the visible symptom, giving the client a durable fix at the exact point the leak started.
If your tile roof has a similar step-down into a lower sheeting section, or you’re getting damp patches with no obvious cause, it’s worth having that junction inspected before the next heavy rain.
Related SealAll Roof Contractors services: weatherproof roof tiles · roof waterproofing · roof coating and painting across the Vaal Triangle.
Contact SealAll Roof Contractors for a free inspection and quote: 072 694 9243 · roofcontractors.co.za
SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Meyerton and the greater Vaal region.
#TileRoofRepair #Meyerton #VaalRoofing #SealProApplicator