What types of roofs do you waterproof in Cape Town?

Sealtek Cape waterproofs concrete and clay tile roofs, metal roofing systems (IBR, corrugated iron, Chromadek, galvanised steel), flat concrete slabs, and asbestos roofs across the Western Cape.

How much can I save with roof waterproofing vs roof replacement?

Professional liquid roof waterproofing by Sealtek Cape can save property owners up to 70% compared to full roof replacement, while significantly extending the life of the existing roof.

Do you offer a guarantee on roof waterproofing work?

Yes. Sealtek Cape provides a 5-year written guarantee covering both materials and workmanship on all roof waterproofing applications performed by Sealtek Accredited Applicators.

Do you provide emergency roof leak repairs?

Yes. Sealtek Cape offers rapid response emergency leak repair services to address urgent roof leak problems throughout the Western Cape.

Are your waterproofing products suitable for South African conditions?

Yes. Sealtek products are locally manufactured and specifically formulated for South African conditions, including superior UV protection for the intense solar radiation and heavy winter rains experienced in the Western Cape.

Roof Waterproofing Cape Town and Western Cape

You know something isn't right with your roof. Maybe it's a damp patch on the ceiling that gets worse when it rains. Maybe the paint is bubbling in a room that was fine last year. Or maybe you've already had someone out to "fix" it and the problem came back.

We understand how frustrating that is. The uncertainty of not knowing how bad the damage really is, and the worry about who you can trust to do the work properly.

Sealtek Cape has accredited waterproofing contractors in your area who specialise in the climate and conditions where you live. They use locally manufactured Sealtek products designed specifically for South African weather, and their work is backed by a 5-year written guarantee covering both materials and workmanship.

Roof Waterproofing Services

We apply liquid waterproofing systems to roofs using paint-on, roll-on, and airless spray techniques. Liquid systems create a seamless coating with no joints or seams, which means no weak points where water can get through.

This works across every common roof type in the Western Cape: concrete and clay tiles, metal sheeting (IBR, corrugated iron, Chromadek), concrete slabs and flat roofs, and asbestos roofing.

Every project starts with an on-site assessment. We look at the roof, identify the problem, and recommend the right Sealtek product for your specific roof type and conditions. We don’t quote from photographs. We need to see it first.

What Our Roof Waterproofing Services Cover

Leak detection and repair

Finding where water is actually getting in, not just where it shows up inside

Complete roof waterproofing

Full liquid membrane application for roofs that need comprehensive protection

Roof restoration

Bringing an aging roof back to a weatherproof condition through proper preparation and coating

Preventative maintenance

Scheduled inspections to catch issues early and keep your guarantee valid

Clients include

Every Roof Type Needs a Different Approach

Not every roof leaks for the same reason, and not every roof needs the same product. Here’s what we do for each type:

Concrete and Clay Tile Roofs

Tiles crack, shift, and lose their pointing over time. When they do, water gets underneath. We apply Sealtek Roof Renew to create a secondary moisture barrier beneath the tile layer, so even if individual tiles fail, the roof stays protected. The flexible membrane accommodates the natural movement of tiles without cracking.

Metal Roofs: IBR, Corrugated Iron, Chromadek

Metal roofs corrode. Fasteners rust, rubber washers degrade, and lap joints lose their seal. We treat corrosion with Sealtek MetalCoat rust inhibitor, then apply HydroFlex waterproofing over the top. HydroFlex accommodates the thermal expansion and contraction that metal roofs go through every day, which is what causes rigid coatings to fail.

Concrete Slab and Flat Roofs

Flat roofs are difficult because water doesn’t run off. It sits. Ponding water finds every hairline crack and failed joint. We use the Armtek System with HydroFlex coating, which provides the flexibility to bridge cracks as the concrete moves with temperature changes. The seamless application means there are no joints for water to exploit.

Asbestos Roofs

Asbestos roofing can’t just be treated with any product. It needs safe encapsulation that seals the fibres whilst waterproofing the surface. We use AsbestosFlex, which is specifically formulated for asbestos. This extends the roof’s serviceable life without the cost and regulatory complexity of removal.

Let’s Get Your Roof Sorted

If you’re dealing with a roof that leaks, a coating that’s failing, or you just want to protect your property before the next rainy season, get in touch. We’ll connect you with an accredited contractor who knows your area and can assess what your roof actually needs.

Why Accredited Contractors Make the Difference

Waterproofing products are only as good as the people applying them. Surface preparation, primer selection, application thickness, and curing conditions all determine whether a system performs for years or fails within months.

Sealtek Accredited Applicators are trained on every product in the Sealtek range. They know which primer suits which substrate, how to prepare different roof surfaces, and how to apply liquid systems correctly using spray, roller, or brush techniques. That training is what backs the 5-year written guarantee. It covers both the materials and the workmanship.

What you get with Sealtek Cape Services

What to Expect When You Contact Us

Step 1: You get in touch

Call, email, or use the form on this page. Tell us what you’re seeing: the leak, the damp, the concern. We’ll connect the accredited contractor in your area with you

Step 2: On-site assessment

Your local contractor visits the property, conducts an inspection , and identifies the problem. This is where the right product and approach get determined, not before.

Step 3: A quote based on what we've seen

The quote reflects the actual problem, actual conditions, and actual work required. No guesswork.

Step 4: Professional application

The accredited contractor carries out the work using the specified Sealtek products and techniques. The 5-year written guarantee applies from completion.