Roofing & Waterproofing

Protect What Matters Most

Your roof is one of the most critical elements of any building. At Rouberto Building Materials, we stock a comprehensive range of roofing materials, waterproofing products and drainage solutions to keep structures watertight, weatherproof and long-lasting. From corrugated steel sheeting and IBR roofing to liquid waterproofing membranes and bitumen systems, we have what contractors and homeowners need for new roofs, re-roofing projects and remedial waterproofing repairs.

Our team can help you specify the right product for your roof type, pitch and exposure conditions. We deliver across Randburg and surrounding areas.

Products we offer

Corrugated Iron Sheeting

Classic corrugated galvanised steel or Chromadek-coated roofing sheets in standard and custom lengths. Suitable for domestic outbuildings, carports, agricultural buildings and re-roofing. Colour options available in Chromadek finish.

IBR (Inverted Box Rib) Sheeting

IBR profile steel roofing offers greater strength and a cleaner architectural appearance than corrugated. Widely used for residential and light commercial roofing. Available in galvanised and Chromadek finishes.

Polycarbonate Roofing Sheets

Clear, tinted and opal polycarbonate sheeting for carports, patios, verandas, skylights and covered walkways. Available in corrugated, IBR and flat (multiwall) profiles.

Roof Tiles & Accessories

Concrete and clay roof tiles in a range of profiles and colours, together with ridge tiles, hip tiles, valley tiles and tile adhesive for tiled roof installations and repairs.

Roof Screws & Fixings

Self-drilling roofing screws with neoprene washers in standard sizes for fixing corrugated and IBR sheeting. Colour-matched options available for Chromadek installations.

Gutters, Downpipes & Fascia

uPVC and aluminium half-round and square gutters, downpipes, gutter brackets, union joints, end caps and rainwater outlet connections for residential and commercial drainage systems.

Liquid Waterproofing Membranes

Brush and roller-applied bitumen-based and elastomeric liquid waterproofing for flat roofs, parapet walls, balconies, wet areas and below-ground waterproofing applications.

Torch-on Bitumen Waterproofing

APP-modified bitumen membrane for torch-on application on flat and low-pitched roofs. Provides a durable, long-lasting waterproofing layer when correctly applied by a competent contractor.

Flashings & Waterproofing Tape

Lead-free aluminium and butyl rubber flashings for roof-to-wall junctions, penetrations and parapet details. Self-adhesive waterproofing tape for joint sealing and minor repairs.

Brands we stock

Frequently Asked Questions

What is the difference between IBR and corrugated roofing?

Corrugated roofing has a wavy profile — a series of rounded ridges and valleys — and has been used in South Africa for generations. It is cost-effective and widely available. IBR (Inverted Box Rib) roofing has a more angular, box-shaped profile with flat pans between the ribs, giving it greater rigidity and a more contemporary look. IBR can generally span further between purlins than equivalent-gauge corrugated sheeting, and it is the more popular choice for residential and commercial applications. Both are available in galvanised steel and Chromadek colour-coated finishes.

How do I waterproof a flat roof?

Flat roof waterproofing depends on the substrate, the condition of the existing surface and the budget. Common approaches include: torch-on bitumen membrane (the most common and durable system for new flat roofs), liquid-applied elastomeric or bitumen coatings (cost-effective for smaller areas and remedial work), and self-adhesive waterproofing membranes. Proper surface preparation is critical for any waterproofing system to perform correctly. For roofs with existing drainage and structural issues, these should be addressed before applying any waterproofing. Our team can help you identify the right system for your specific situation.

What causes roof leaks and how do I fix them?

The most common causes of roof leaks are: failed or deteriorated flashings at wall junctions, chimneys and penetrations; cracked or slipped roof tiles; corroded roofing screws or failed screw holes; failed waterproofing on flat roofs or parapet walls; and blocked gutters causing water overflow and backing up under the roof sheeting. The first step is always to identify the actual source of the leak, which is not always directly above where the water appears inside. Our team can advise you on the right repair product once you’ve identified the cause.

How long does a steel roof last?

The lifespan of a steel roof depends on the finish, the environment and the maintenance it receives. Galvanised steel roofing typically lasts 20–30 years depending on the zinc coating mass and exposure to coastal or industrial environments. Chromadek (pre-painted Galvalume or galvanised steel) has a factory-applied paint finish that significantly extends durability — properly maintained Chromadek roofs commonly last 30–50 years. Regular maintenance, including cleaning gutters, repairing damaged fixings promptly and painting when the coating begins to deteriorate, is the most effective way to extend the life of any steel roof.

Planning a Roofing or Waterproofing Project?

Our team can help you spec the right products, calculate quantities and arrange delivery to your site.

Visit us in Fontainebleau, WhatsApp us or request a quote online.