Skip to content 
Industrial Roof Waterproofing Specialists
Professional Waterproofing Solutions for Factories, Warehouses & Commercial Buildings
At Precision Flow Waterproofing, we specialise in large-scale industrial and commercial roof waterproofing throughout Gauteng and surrounding areas.
From ageing factory roofs and leaking roof sheeting to rusted fasteners, failing overlaps and deteriorated waterproofing systems, our team provides complete roof restoration and waterproofing solutions designed for demanding industrial environments.
Using Precision Liquid Rubber, professional high-pressure airless spray equipment and thorough roof preparation, we create a flexible, seamless waterproof coating that protects your roof against water penetration and harsh South African weather conditions.
Large roofs. Professional preparation. Long-term protection.
Industrial Waterproofing for Large Commercial Properties
Industrial roofs are constantly exposed to intense sunlight, temperature changes, heavy rainfall, wind and natural movement of the roof structure.
Over time, these conditions can cause:
-Rust and corrosion
-Leaking roof screws
-Failed washers and fasteners
-Cracked sealants
-Open roof-sheet overlaps
-Leaking ridge cappings
-Damaged flashings
-Deteriorated previous coatings
-Water penetration around vents and penetrations
-Loose or ageing roof sheets
Precision Flow provides a complete industrial waterproofing system instead of simply covering existing problems.
Our Industrial Waterproofing Process
1. Roof Inspection
Every project starts with an assessment of the roof.
We inspect the condition of the roof sheeting, fasteners, overlaps, flashings, ridge sections, penetrations and existing waterproofing to identify areas requiring attention.
For large industrial projects, the roof can be divided into sections so that preparation and coating can be carefully managed.
2. Roof Preparation
Good waterproofing starts with proper preparation.
Depending on the condition of the roof, preparation may include:
Removal of loose coatings
Loose, peeling or deteriorated material is removed before application.
Rust preparation
Corroded areas are mechanically prepared to remove loose rust and unstable material.
Cleaning
Dust, contaminants and loose material are removed to provide a suitable surface for coating.
Fastener inspection
Damaged, loose or severely corroded roof screws can be replaced where required.
3. Rust Treatment & Primer
Where required, exposed or prepared metal sections are treated before waterproofing.
A suitable primer system is applied to help protect the roof sheeting and create a strong foundation for the waterproofing system.
This is particularly important on older industrial roofs where corrosion has already started.
4. Waterproofing Critical Roof Areas
The majority of industrial roof leaks originate from joints and penetrations rather than the centre of the roof sheet.
We pay particular attention to:
Roof Sheet Overlaps
Horizontal and vertical sheet overlaps are sealed to prevent wind-driven rain from entering between roof sheets.
Roof Screws & Fasteners
Fasteners are individually inspected and waterproofed where necessary.
Ridge Cappings
Ridges and cappings are sealed to prevent water penetration during heavy rainfall.
Flashings
Wall flashings, side flashings and other vulnerable junctions are waterproofed.
Roof Penetrations
Pipes, ventilation systems, ducts and other roof penetrations are sealed carefully.
Problem Areas
Where additional reinforcement is required, waterproofing membrane can be incorporated into the liquid waterproofing system.
5. Precision Liquid Rubber Application
Once preparation and detailing have been completed, Precision Liquid Rubber is applied across the roof.
For large industrial roofs, we use professional high-pressure airless spraying equipment, allowing our teams to apply the coating efficiently and consistently across large roof areas.
The coating forms a flexible waterproof membrane across the roof surface.
Why Liquid Rubber is Ideal for Industrial Roofs
Industrial roofs expand during the heat of the day and contract as temperatures drop.
A waterproofing system must therefore be able to cope with movement.
Precision Liquid Rubber provides a flexible waterproof barrier designed to move with the roof while protecting vulnerable areas against water penetration.
Benefits include:
-Seamless waterproof protection
-Flexible coating
-Excellent coverage of complicated roof profiles
-Suitable for large roof areas
-Helps protect roof sheeting from weather exposure
-Can be applied using professional airless spray equipment
-Suitable for restoration of ageing industrial roofs
-Helps extend the usable lifespan of existing roofing
-Available in different colours
-Cost-effective alternative to premature roof replacement
Industrial Roof Restoration
A leaking industrial roof does not always need to be replaced.
In many cases, a properly prepared and restored roof can continue providing years of service.
Our restoration system can include:
Inspection → Rust preparation → Cleaning → Primer → Fastener repairs → Joint sealing → Membrane reinforcement → Precision Liquid Rubber coating
This allows businesses to restore existing roofing while avoiding the disruption and expense associated with completely replacing thousands of square metres of roof sheeting.
Suitable Roof Types
Our industrial waterproofing systems can be used on many common commercial and industrial roof types, including:
-IBR roof sheeting
-Corrugated metal roofing
-Bullnose factory roofs
-Chromadek roofing
-Galvanised roof sheeting
-Metal warehouse roofs
-Factory roofs
-Workshop roofs
-Agricultural and industrial buildings
-Commercial properties
-Large roof structures
Factory Roof Waterproofing
Factory roofs often cover thousands of square metres and can contain hundreds or thousands of roof screws, overlaps and joints.
A small failure can allow significant amounts of water into the building below.
Our industrial teams systematically work through each roof section, addressing vulnerable areas before applying the final waterproof coating.
This makes Precision Flow particularly suitable for large factory and industrial waterproofing projects.
Warehouse Roof Waterproofing
A leaking warehouse roof can damage:
-Stock
-Machinery
-Electrical equipment
-Packaging
-Finished products
-Ceilings
-Offices
-Flooring
Preventative waterproofing can help businesses address deterioration before minor roof problems become costly internal damage.
Large-Scale Commercial Waterproofing
Precision Flow has structured its industrial waterproofing service around the requirements of large projects.
Our approach allows multiple work teams to operate across large roof areas while following the same preparation and application system.
We are available for projects ranging from individual commercial buildings to large industrial complexes covering tens of thousands of square metres.
Precision Liquid Rubber
Flexible Protection for South African Conditions
Precision Liquid Rubber has been developed for professional waterproofing applications where flexibility, adhesion and long-term weather protection are important.
The system can be applied to appropriately prepared roof surfaces and provides a continuous waterproof coating across the substrate.
For industrial applications, the product can be sprayed using suitable professional airless equipment to achieve efficient application over large areas.
Up to 10-Year Waterproofing Warranty
Qualifying Precision Liquid Rubber installations can receive a 10-year waterproofing warranty, subject to the approved application specification, roof condition, maintenance requirements and keeping the roof suitably clean.
A project-specific warranty certificate can be issued upon successful completion of qualifying projects.
Why Choose Precision Flow?
Industrial Waterproofing Specialists
Our focus is increasingly centred on large industrial and commercial waterproofing projects.
Complete Roof Preparation
We believe the quality of the waterproofing system begins before the first coat is applied.
-Professional Airless -Application
-High-pressure airless spraying allows efficient coverage across large industrial roofs.
-Detailed Waterproofing
-Special attention is given to fasteners, overlaps, ridges, flashings and penetrations.
-Precision Liquid Rubber
-We use our own waterproofing system rather than relying solely on generic off-the-shelf coatings.
Large Project Capability
Our work methodology is designed to accommodate factories, warehouses and industrial sites with extensive roof areas.
South African Business
Precision Flow operates in South Africa and understands the demanding conditions experienced by industrial roofing in our climate.
Protect Your Factory Before the Next Storm
Water damage can quickly become considerably more expensive than preventative roof maintenance.
If your factory, warehouse or commercial property is showing signs of:
Rust • Roof leaks • Ageing waterproofing • Loose fasteners • Failed overlaps • Water stains • Deteriorated roof sheeting
contact Precision Flow for an industrial roof assessment.
Request an Industrial Waterproofing Quotation
Precision Flow Waterproofing
