Flat Roof Slab Waterproofing & Drainage Repair in Vanderbijlpark
Location: Vanderbijlpark, Gauteng
Service: Flat Roof Slab Waterproofing with Outlet Repositioning
Flat concrete roof slabs are common on double-storey homes across the Vaal, and they work well — as long as water is draining off them, not pooling on them. On one recent case study, a large flat slab sitting directly above a bedroom and bathroom had two old drainage outlets positioned at a low point on the roof instead of the edge. Rather than shedding rainwater quickly, the slab was holding it, and a slow leak had started tracking down into the ceiling below during heavy Highveld storms.
The problem
From a distance, the roof looked fine — a smooth grey membrane with a tidy cable run across it. Up close, it told a different story. The original full-bore outlet had been let into the slab at a point that collected standing water rather than draining it, and years of ponding had worn straight through the surrounding waterproofing. Around the outlet, the membrane had cracked and lifted, leaving a dark, water-stained hole down into the substrate. Every rain event was pushing moisture past the failed seal and into the rooms below.
This is one of the most common — and most overlooked — causes of flat roof leaks: it’s rarely the membrane itself that fails first, it’s outlets and drainage points placed where water naturally collects instead of where it can escape.
The solution
Working as an approved SealPro applicator, the crew followed a sequence built to fix the drainage problem permanently rather than patch the symptom:
- Close and rescreed the old outlet. The failed full-bore outlet was sealed off and the surrounding slab rescreeded back to a sound, level surface, removing the low point that had been collecting water in the first place.
- Reposition drainage to the outer wall. Two new 80 mm outlets were installed on the outer wall, moving the discharge point to where water could shed efficiently instead of pooling in the middle of the roof.
- Prep and prime the full substrate. The entire slab — roughly 35 m² — was cleaned, degreased and primed to give the new waterproofing system a clean, stable base to bond to.
- Apply the ArmTec waterproofing system. A flat-slab ArmTec membrane was applied across the full area, reinforced at the new outlet points and roof edges where water movement is greatest.
The result
The slab now drains cleanly to the two new outer-wall outlets instead of pooling in the middle of the roof, and the ArmTec system leaves a durable, seamless waterproof layer with no weak points around the drainage. The rooms below are protected from the kind of slow leak that can go unnoticed for months, and the roof is finished with a clean, uniform coating built to handle a full Highveld storm season.
If your flat roof slab is showing similar signs — ponding water, a stained ceiling, or outlets that never seem to keep up with heavy rain — the fix is rarely the membrane alone. It’s usually the drainage layout underneath it.
SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Vanderbijlpark 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
#FlatRoofWaterproofing #Vanderbijlpark #VaalRoofing #SealProApplicator
Multi-Section Metal Roof Waterproofing in Vanderbijlpark
Location: Vanderbijlpark, Gauteng
Service: Multi-Section Metal Roof Waterproofing & Painting
This case study looks at a large corrugated IBR metal roof made up of several distinct sections — a solar panel roof, a flat waterproofed section, and a separate side roof — where years without maintenance had let rust take hold and an old membrane crack and fail. It walks through the process used to bring a roof like this back to a single, watertight system, and it’s the kind of job SealAll Roof Contractors handles regularly across the Vaal.
The problem: rust, failed seals and a cracked membrane
On the main IBR sections, the factory paint had worn through along the ridges and screw lines, exposing bare metal to rust that was spreading across large areas of sheeting. The overlaps and screw fixings were no longer sealed, leaving multiple points where water could get in during heavy rain. On the flat section of the roof, the old waterproofing membrane had cracked and crazed across its surface, with patchy repairs visible where previous leaks had been dealt with piecemeal instead of properly resolved. With solar panels already mounted on one section of sheeting, any further delay risked turning routine maintenance into a much bigger job around fixed installations.
The solution: a full-system metal roof restoration
As an approved SealPro applicator, SealAll Roof Contractors follows a proven sequence for jobs like this:
- High-pressure wash and degrease the roof sections to strip away chalking paint, grime and loose debris ahead of treatment.
- Rust conversion on all corroded sheeting, stopping the spread of corrosion before it can undermine the new coating.
- Waterproof every joint, overlap and screw line across the IBR sheeting with a hand-applied elastic waterproofing coating at each vulnerable fixing point.
- Re-waterproof the flat roof section with SealPro HyperFlex, embedding fibreglass reinforcing mesh into the coating across the full surface and up every upstand for a seamless, crack-bridging membrane.
- Prime the metal roof surface ahead of topcoating, giving the paint system a properly bonded base.
- Apply two coats of premium roof paint across the remaining sheeting, restoring a uniform, low-sheen finish.
The work is typically carried out over several visits, moving section by section so the waterproofing on any flat areas can cure fully before recoating, while the metal sheeting is treated and painted in parallel.
The result: one roof, not three ageing sections
The finished roof presents as a single, cohesive system instead of separately failing sections. The rusted screw lines and overlaps are sealed and repainted in a clean, uniform finish, any solar installation sits on a roof that’s properly protected around its mountings, and the flat section carries a fresh, fully reinforced waterproofing membrane in place of the cracked surface that was there before. It’s the kind of full-roof maintenance that closes off every entry point for water at once, rather than chasing leaks section by section as they appear.
Whether your metal roof is a single simple span or a multi-section system with solar panels and flat areas mixed in, the same process applies. SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Vanderbijlpark 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
#IBRRoofMaintenance #Vanderbijlpark #VaalRoofing #SealProApplicator
Tile Roof Prep, Ridge Waterproofing & Paint in Vanderbijlpark
Location: Vanderbijlpark, Gauteng
Service: Tile Roof Prep, Ridge Waterproofing & Painting
A tile roof’s colour coat is its first line of defence, and once that layer gives out, the tiles themselves start absorbing water instead of shedding it. That was the situation on this tiled roof, where years of sun exposure had stripped the original blue-green finish back to a chalky, faded shell and cracked open several sections of the ridge line. The owner brought in a SealPro-approved applicator to reseal the ridges, recoat the full tiled roof, and replace the ageing barge board edging while they were at it.
The problem
The protective top coat on the tiles had failed almost everywhere, leaving patches of bare, porous concrete exposed to the weather. Along the ridge, the cement fill between capping tiles had cracked and, in several spots, crumbled away completely, opening gaps at the highest point of the roof where wind-driven rain does the most damage. The existing colour had also faded and patched unevenly across the roof planes, so the home was losing both protection and kerb appeal at the same time. The over-tile barge boards running along the roof edge had weathered along with everything else and needed replacing rather than repainting.
The solution
As an approved SealPro applicator, the team worked through a full prep-and-recoat sequence rather than painting over the existing damage:
- Ridge repair first. The loose, cracked cement fill along every ridge run was raked out back to sound material, the substrate was prepped and primed, and the joints were rebuilt and waterproofed with a stretch-seal system — locking down the most vulnerable line on the roof before any paint went on.
- Full roof clean and prep. The entire tiled roof, main house and outbuilding sections alike, was high-pressure washed to strip years of chalking, algae and loose coating back to a stable surface that new paint could actually bond to.
- Two-coat repaint. With the roof clean, dry and sound, the team applied SealPro’s M22 Ultimo Roof Paint in Slate in two full coats, working with the tile profile and roof pitch to build an even, durable film from ridge to eaves.
- Barge board flashing. The old over-tile barge boards were stripped off and replaced with new flashings along the roof edge, finished to match the new roof colour and closing off the last exposed edge on the job.
The result
The roof went from a patchy, faded blue-green to a clean, uniform slate grey that reads sharp against surrounding red-tile roofs. The ridges are sealed and tidy, the new edge flashings finish the roofline properly, and the tiles are shedding water again instead of soaking it up. It’s the kind of job that does not just look better from the driveway — it takes a roof that was actively letting water in at the ridges and puts a proper stop to it.
SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Vanderbijlpark and the greater Vaal region.
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
#TileRoofPrepAndPaint #Vanderbijlpark #VaalRoofing #SealProApplicator
Commercial Roof Slab Waterproofing in Vanderbijlpark
Location: Vanderbijlpark, Gauteng
Service: Commercial Roof Slab Waterproofing with Trafficable Top Coat
A newly built commercial roof deck needed a full waterproofing system before it could be signed off for use. The flat concrete slab sat above a busy operational space, and with rooftop equipment, drainage outlets and regular foot traffic for maintenance, the roof had to be completely watertight from day one rather than patched up after the first leak appeared.
The problem
The slab was freshly cast, bare concrete: no membrane, no reinforcement at the movement joints, and no protective finish. Exposed slabs like this are vulnerable at every corner, parapet junction and construction joint, where hairline cracking and shrinkage movement are almost guaranteed once the structure starts to work under thermal expansion. Left untreated, water finds its way through these weak points and tracks down into the ceiling and equipment below — a serious risk on any commercial building. The client needed a durable, trafficable system that could handle regular access for servicing rooftop equipment without breaking down over time.
The solution
Working as an approved SealPro applicator, our team carried out the waterproofing in three stages:
- Prep and prime the substrate — the full slab was cleaned down to a sound, dry surface and primed to give the waterproofing system proper adhesion, with extra attention paid to the parapet corners and construction joints.
- Waterproof with the ArmTec system — a reinforced, fibreglass-mesh-backed waterproofing coating was applied across the entire slab and dressed up all abutments and joints, closing off the cracking and movement points that cause the most leaks on flat concrete roofs.
- Apply a trafficable top coat — a tough, walkable finishing coat was rolled over the cured membrane, giving the roof a durable surface that can take regular foot traffic for equipment access and maintenance without compromising the waterproofing underneath.
The result
The roof slab now has a fully sealed, seamless waterproofing membrane finished with a trafficable coating built for daily use. Every corner and joint that used to be a potential leak point is reinforced and protected, and the finish is tough enough for technicians to walk the roof safely for routine servicing. The result is a roof built to perform through Gauteng’s summer storms and winter temperature swings alike, backed by a proper waterproofing system rather than a quick fix.
Flat concrete roof slabs are common on commercial and industrial buildings throughout the Vaal, and the same weak points — bare joints, unprotected parapets, and constant foot traffic — show up again and again. If your roof slab needs proper waterproofing before problems start, or you’re already dealing with damp patches and leaks, SealAll Roof Contractors can assess it and recommend the right system for your building.
SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Vanderbijlpark 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 #Vanderbijlpark #VaalRoofing #SealProApplicator
Metal Roof Waterproofing & Painting in Vanderbijlpark
Location: Vanderbijlpark, Gauteng
Service: Metal Roof Waterproofing & Painting
Corrugated metal roofs take a beating from the Highveld sun, hail and seasonal rain, and sooner or later the factory coating starts to give up. This case study looks at a typical large corrugated metal roof where the old paint system had failed completely, and walks through the coating process used to bring it back to a fully protected, watertight finish.
The problem: a failing coating and creeping rust
Years of sun exposure, hail impact and seasonal rain had broken down the roof’s original coating. Across the sheeting, the old paint had blistered and lifted, and in the worst areas it had flaked away completely to reveal dull, oxidising metal underneath. Once bare steel is exposed like this, rust spreads quickly, working its way under the surrounding paint and along the overlaps and screw lines where water tends to sit. Left untreated, that kind of corrosion eats into the sheeting itself and eventually leads to leaks. A roof in this state needs more than a quick repaint — it needs proper preparation and a coating system that seals every vulnerable point and stops the rust in its tracks.
The solution: a full metal-roof coating system
As an approved SealPro applicator, SealAll Roof Contractors follows a proven sequence for restoring metal roofs like this one:
- Deep clean. The full roof area is high-pressure washed to strip loose paint, dirt and chalk, then degreased so the new system can bond to a sound surface.
- Rust treatment. Every rusted section is treated with a rust converter to neutralise corrosion and stabilise the bare metal before coating.
- Priming. The prepared sheeting is primed with a Purple Prime metal primer to lock down the surface and give the topcoats maximum adhesion.
- Sealing the weak points. Overlaps, joints and screw lines — the places where metal roofs almost always start leaking — are reinforced with StretchSeal, and the fasteners sealed so water can no longer track underneath.
- Two protective topcoats. Finally, two full coats of high-quality roof paint are applied across the entire roof, giving an even, hard-wearing, weatherproof finish.
The result: a protected roof that looks brand new
The transformation is dramatic. Tired, rust-streaked sheeting is replaced by a clean, uniform coat that looks factory-fresh from every angle. More importantly, the metal underneath is sealed against the weather, the rust is stopped, and the vulnerable joints and screw lines are watertight. The result is a roof that not only lifts the whole look of the property but stays protected against corrosion and leaks for years to come.
Whether your metal roof sheeting is fading, flaking or starting to rust, the same care and coating system can bring it back to life. SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Vanderbijlpark 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 #Vanderbijlpark #VaalRoofing #SealProApplicator
Tile Roof Ridge Waterproofing & Painting in Vanderbijlpark
Location: Vanderbijlpark, Gauteng
Service: Tile Roof Ridge Repair, Waterproofing & Painting
Here’s a recent tile roof project from the SealAll Roof Contractors team that shows what a properly sequenced ridge repair and repaint can do for a roof nearing the end of its protective life. The concrete tile roof had reached the point where the ridge line was failing and the paint system underneath it had given up entirely.
The problem
Along the ridge line, the bedding cement holding the ridge caps in place had cracked and, in several spots, had gone missing altogether — leaving ridge caps loose and unsealed at the highest, most exposed point of the roof. That’s exactly where rain finds its way in first once the cement lets go. Across the tile field itself, the original protective top coat had failed under years of sun exposure: the colour had UV-faded and chalked out, patches of bare concrete tile were left exposed to the weather, and algae and fungal growth had taken hold across large sections, dulling the tiles and holding moisture against the surface.
The SealAll solution
As an approved SealPro applicator, SealAll Roof Contractors worked through the roof in two coordinated stages rather than just patching the visible damage:
- Ridge repair. All damaged ridge caps were raked out to remove loose, failing cement and refilled with fresh fibre cement to rebuild a solid, even substrate.
- Ridge priming and waterproofing. The repaired ridges were prepped and primed, then sealed with the SealPro Stretch Seal waterproofing system to keep the ridge line watertight and flexible under thermal movement.
- Full roof pressure wash. The entire tile roof was high-pressure washed by hand to strip off dirt, loose material and surface grime ahead of painting.
- Algae and fungal treatment. A dedicated algae cleaner was applied across the tiles to kill off fungal growth and stop it returning under the new coating.
- Two-coat roof paint system. The full roof was painted in two coats of premium roof paint in a slate finish, rebuilding UV protection and giving the roof a uniform, modern look.
The result
The roof went from a faded, algae-marked finish with an unsealed ridge line to a crisp, uniform slate-grey coat from ridge to eave. With the ridge caps rebuilt and waterproofed and a fresh two-coat paint system locking out UV and moisture, the roof is both weatherproofed at its most vulnerable point and refreshed cosmetically — the kind of result that adds years of protection from a single, well-sequenced project.
SealAll Roof Contractors is an approved SealPro applicator serving Vereeniging, Vanderbijlpark and the greater Vaal region. If your tile roof has cracked or missing ridge cement, or the paint system has chalked and faded, it’s worth getting it inspected before the next heavy rain finds its way in.
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
#TileRoofWaterproofing #Vanderbijlpark #VaalRoofing #SealProApplicator