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Professional Roof Waterproofing Services in Randburg & Johannesburg

Don’t let a leaking roof damage your property. Damp King provides professional roof waterproofing for all roof types with a 10-year guarantee. From concrete roofs to tiles and IBR sheeting – we fix them all.

Waterproof Your Roof Today Get A Tailored Quote
roof waterproofing
  • All roof types covered
  • 10-year written guarantee
  • Same-day emergency service
  • FREE roof assessment
I’ll never forget the call I got from a homeowner in Lonehill three Novembers ago. Golf ball-sized hail had just torn through the area, and by the time she reached us, water was already pooling in her main bedroom. She’d placed every bucket and towel she owned across the ceiling, but the damage was spreading to her wooden floors. This is what roof waterproofing looks like in Randburg and nearby areas. When storms hit, they hit hard. How quickly you respond can mean the difference between a simple repair and a R50,000 insurance claim.
 
I’m writing this because I’ve seen too many property owners in Sandton, Roodepoort, and Midrand put off waterproofing until it turns into a crisis. The same thing happens every year: winter passes without maintenance, then summer storms hit, and suddenly everyone needs emergency repairs at once. We’ve handled roof waterproofing in the northern suburbs for thirty years, and the most important lesson is simple. Water doesn’t negotiate. Once it gets through your roof, it will continue to find that weak spot until you properly fix it.
 
Whether you’re dealing with immediate storm damage or you’re smart enough to waterproof before the next rainy season begins, the fundamentals remain the same. Your roof requires protection tailored to Johannesburg’s climate patterns, installed by contractors who understand both the technical requirements and the necessary insurance documentation in case of issues.
services

Our Roof Waterproofing Services

Concrete Roof Waterproofing

  • Derbigum Torch-On waterproofing systems
  • Approved Derbigum applicators
  • Made for South African conditions
  • 10-year guarantee with 2-yearly service
  • Professional membrane installation
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roof waterproofing

IBR & Corrugated Roof Repairs

  • Re-sealing joints and nail points
  • Polystyrene and hardboard waterproofing
  • Shutter board torch-on applications
  • Complete leak detection and repair
  • Rust treatment and prevention
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roof waterproofing

Tiled Roof Waterproofing

  • Individual tile roof assessment
  • Broken tile replacement
  • Ridge capping repairs
  • Gutter and down pipe solutions
  • Complete tile roof restoration
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Why Choose Our Roof Waterproofing

30+ Years of Roof Waterproofing Excellence

Since 1994, Damp King has been the trusted damp proofing specialists for Randburg, Johannesburg and Pretoria. We’re a family business that puts quality and customer satisfaction first.

Ready to solve your damp problems?

Call 011 792 6575 for your free assessment today.

  • APPROVED APPLICATORS: We're approved Derbigum torch-on applicators
  • QUALITY MATERIALS: Using only the best South African-made products
  • 10-YEAR GUARANTEE: Written guarantee on all torch-on waterproofing
  • EMERGENCY SERVICE: Same-day service available for urgent leaks
  • ALL ROOF TYPES: Concrete, metal, tiles - we waterproof them all
one stop solution for all your roofing problems

Storm Damage Assessment and Emergency Waterproofing

When hail hits Sandton or Bryanston, a quick fix is not enough. We answer emergency calls during business hours and offer same-day assessments in Randburg and nearby areas. We start by carefully documenting the damage, since your insurance claim relies on having accurate records right away.
 
We photograph every compromised section, measure the affected areas, and provide detailed reports that insurance adjusters actually accept. This documentation approach has helped dozens of property owners in Midrand and Roodepoort successfully claim for storm damage that other contractors missed or poorly recorded. The difference between a R15,000 repair you pay yourself and a R15,000 claim your insurer covers often comes down to how well the initial damage assessment was handled.
SERVICE

Concrete Roofs

Concrete roofs are particularly susceptible to water damage in South African weather conditions. Our Derbigum Torch-On systems provide:

  • UV-stable polymer modified bitumen membrane
  • Dual reinforced polyester core construction
  • Excellent tensile strength and elasticity
  • Temperature stability and weather resistance
  • 10-year guarantee with maintenance program
Concrete roofs in the northern suburbs face unique challenges. In Johannesburg, hot days and cool nights cause roofs to expand and contract, which can crack regular waterproofing. That’s why we use Derbigum torch-on systems, made in South Africa, for these conditions.
 
We use the Derbigum Special Polyester 4mm membrane. It costs more than some options, but it holds up in highveld weather. Its strong design withstands both sun and temperature changes without cracking. We’ve seen many cheaper waterproofing jobs fail within two years because the wrong products were used for our climate.
 
Our concrete roof waterproofing costs between R250 and R500 per square metre, depending on the roof’s condition and how easy it is to access. This price covers surface preparation, primer, and the full torch-on membrane installation. We also offer a 10-year guarantee on all concrete roof work, as long as we do a service check every two years.
roof waterproofing
SERVICE

IBR and Corrugated Roof Waterproofing

Metal roofs develop leaks at joints, screws, and through rust damage. We provide:

  • Complete leak detection using advanced equipment
  • Re-sealing of all joints and penetrations
  • Rust treatment and protective coatings
  • Insulation upgrades where required
  • Gutter and downpipe repairs10-year guarantee with maintenance program
Metal roofs tend to leak in the same places, such as around screws, at seams, and where valleys meet. After working on many IBR and corrugated roofs in Roodepoort’s industrial areas, we know which sealants last and which ones give way after the first heavy rain.
 
Depending on the damage extent, we might reseal joints and fasteners, apply polystyrene boarding with torch-on waterproofing, or install shutter board systems. The method depends on whether you’re dealing with isolated leaks or widespread corrosion. We walk you through the options with transparent pricing before starting any work.
roof waterproofing
SERVICE

Tiled Roof Waterproofing

Tile roofs require specialised knowledge and techniques:

  • Individual tile assessment and replacement
  • Ridge capping repairs and re-bedding
  • Valley waterproofing and lead work
  • Gutter cleaning and repair services
  • Complete tile roof restoration services
Tiled roofs don’t leak the same way as concrete roofs. Water can get in through cracked tiles, worn underlays, or problems with flashing near chimneys and valleys. We look at each tiled roof on its own, since every situation is different. Sometimes the tiles are still in good shape, but the waterproof layer underneath has worn out. In other cases, we need to replace broken tiles and reseal ridge capping that has moved after years of wind.
 
Property managers in Randburg’s commercial areas like our approach to tiled roofs because we can usually work on one section at a time, which means tenants in the rest of the building are not disturbed. We plan our work around your business hours and give you clear timelines, so you can let people know exactly when we’ll be working above them.

Local Experience That Actually Matters

We’ve been waterproofing roofs in the northern suburbs since 1995. Over the past 30 years, we’ve seen how Johannesburg’s weather affects roofs, figured out which products last in the highveld, and learned firsthand which shortcuts lead to problems down the line. We’re approved Derbigum applicators and belong to the right industry bodies, but what really counts is the experience we’ve gained from years of roofing in Randburg, Sandton, and nearby areas.

When the huge hailstorm hit Sandton and Midrand on November 13, 2023, we got dozens of emergency calls. We spent the whole week checking damage, covering damaged roofs, and helping property owners start their insurance claims before more rain could make things worse. That’s what it’s like working here: you need contractors who show up when storms hit, not just ones who take bookings when the weather is good.

Customer Results from Your Area

Dave Robertson in Randburg spent five years and a lot of money with three different contractors trying to fix his damp problem. When he found us seven years ago, we solved it for good. Selma Shipman in Weltevredenpark had worked with a company that used surface sealants that wore off quickly and never fixed her rising damp. We took a different approach with her building, and the waterproofing has lasted.Stories like these are common. Many clients come to us after other contractors have left jobs unfinished, done poor work, or changed their prices after starting. We see this happen so often that we understand why property owners here are skeptical about waterproofing.

We keep things simple. You get clear pricing before we begin, written guarantees when the job is done, and insurance documents that really help if you need to claim. We also service our waterproofing every two years as part of our guarantee, because it's cheaper to prevent problems than to fix them in an emergency.

need any help ?

Get Your Free Roof Assessment

We offer free roof assessments in Randburg, Sandton, Roodepoort, and Midrand. If you have storm damage or want to prepare for the rainy season, we’ll check your roof, explain what needs to be done, and give you clear pricing. Costs range from R250 to R500 per square metre, depending on your roof’s type and condition. Emergency waterproofing services are available during business hours. Insurance claims assistance is included with all major repairs.

Contact Damp King today:

  • Call us for immediate assistance
  • Request a free assessment online
  • All damp proofing work comes with a 10-year guarantee

We’re based in Randburg and cover all surrounding areas. If you’ve got damp walls, peeling plaster, or that musty smell that won’t go away, we can help.

the best roofing service in Randburg

Founded in 1994 as damp proofing specialists, we’ve spent three decades solving the roof leaks, waterproofing failures, and moisture problems that keep Randburg property owners awake at night. No disappearing mid-job. No surprise costs. Just honest work that actually lasts.
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Contact info
  • Unit 38 Graphite Park, Fabriek Street, Strijdom Park, Randburg
  • 011 792 6575
  • 083 626 1174
  • quotes@dampking.co.za
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