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:

1. High-pressure wash and degrease the roof sections to strip away chalking paint, grime and loose debris ahead of treatment.
2. Rust conversion on all corroded sheeting, stopping the spread of corrosion before it can undermine the new coating.
3. Waterproof every joint, overlap and screw line across the IBR sheeting with a hand-applied elastic waterproofing coating at each vulnerable fixing point.
4. 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.
5. Prime the metal roof surface ahead of topcoating, giving the paint system a properly bonded base.
6. 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

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