Roof Waterproofing Solutions

Proven Expertise in Commercial Roof Waterproofing
Reliance Roofing stands as a trusted leader in the roofing industry, backed by decades of hands-on experience and a dedication to excellence. Specializing in commercial roof waterproofing, we have earned a proven track record for delivering effective, durable, and innovative solutions tailored to each project's unique needs. Our extensive portfolio highlights our ability to handle complex challenges while consistently exceeding client expectations.
Our team of highly skilled professionals combines advanced techniques with premium-quality materials to ensure long-lasting protection for your commercial property. We understand that every roof is different, so we focus on providing customized solutions that address the specific requirements of your building, its location, and the local climate.
What is a Roof Waterproofing Service?
Roof waterproofing is essential to sealing roofs to prevent water from penetrating and causing structural damage. This vital procedure creates a robust barrier between your building and the elements, safeguarding it from the impacts of rain, snow, and fluctuating weather conditions. Beyond simply repelling water, proper roof waterproofing ensures long-term durability, prevents mold and fungus formation, and enhances your property's overall performance and lifespan.
The process typically involves applying specialized materials designed to make the roof water-resistant while allowing vapor to escape, preventing condensation and its damaging effects. Commonly used materials include waterproof membranes, elastomeric coatings, polyurethane, silicone, and PMMA.
Some advanced solutions, such as reflective white coatings, waterproof the roof and increase energy efficiency.
Why Roof Waterproofing is Essential for Commercial Properties
Roof waterproofing is vital in maintaining commercial properties' structural integrity and operational efficiency. Water leakage can lead to significant structural damage, weakening the building's framework and jeopardizing its safety over time. By creating a seamless barrier against moisture, waterproofing protects commercial buildings from costly repairs and potential interruptions to business operations caused by water damage.
In addition to safeguarding the structure, waterproofing enhances the building's energy efficiency. Properly sealed roofs reduce heat and moisture transfer, maintaining a consistent indoor climate. This reduces reliance on heating and cooling systems, leading to lower energy consumption and operational costs - an especially vital benefit for large commercial properties.
Ultimately, roof waterproofing prolongs the lifespan of roofing systems by shielding them from the wear and tear caused by water infiltration. This reduces long-term maintenance expenses and ensures the roof performs reliably for years. For commercial properties, where durability and cost-efficiency are key priorities, waterproofing is an indispensable service that protects the structure and the bottom line.
Signs That Your Roof Needs Waterproofing

Leaking Roof
Persistent leaks during or after rainfall are among the most obvious signs that your roof may require waterproofing. Water stains on ceilings or walls are telltale indicators of water infiltration, often caused by damaged or worn-out roofing materials.

Blistering on the Roof Surface
If you notice blistering or bubbling on your roof, it could signal trapped moisture beneath the roofing material. This occurs when water infiltrates and becomes trapped, causing deformities in the surface. These areas are weak points that increase the risk of membrane failure.

Ponding Water
Standing water on your roof more than 48 hours after a rainfall is a red flag. Known as ponding, this condition accelerates the deterioration of roofing materials and can lead to leaks and sagging. It's especially problematic on flat or low-slope roofs, where proper drainage is essential for maintaining integrity.

Cracks, Splits, or Gaps
Visible cracks, splits, or gaps in the roof's surface or at the joints are clear entry points for water. These damages are often caused by natural wear and tear, temperature fluctuations, or physical stress on the roof.

Increased Energy Bills
Unusually high energy bills could be a less obvious but critical sign of a roof needing waterproofing. Water penetration can damage insulation, making it harder to maintain stable indoor temperatures. As a result, heating and cooling systems work harder, driving up energy costs while reducing overall energy efficiency.
Roofing Systems Suitable for Roof Waterproofing

EPDM (Ethylene Propylene Diene Monomer)
A versatile synthetic rubber membrane designed for flat and low-slope roofs. EPDM is highly durable and excels at withstanding harsh weather and prolonged UV exposure. Its seamless application minimizes weak points where water could seep through.

TPO (Thermoplastic Olefin)
TPO is known for its energy-efficient reflective surface, which helps reduce cooling costs in commercial buildings. This material is tough against punctures, tears, and water infiltration. With its compatibility with advanced waterproofing systems, TPO is both cost-effective and eco-friendly.

PVC (Polyvinyl Chloride)
PVC roofing stands out for its superior chemical resistance, ideal for industrial or commercial environments. Heat-welded seams create a strong, watertight barrier that outperforms many other materials in preventing leaks. Its durability and performance make it a reliable option for flat roofing systems.

Built-Up Roofing (BUR)
BUR systems consist of alternating layers of bitumen and reinforcing fabrics, forming a thick, protective barrier against water. This time-tested method is particularly effective in heavy-duty applications and has proven reliability for decades in commercial settings.

Modified Bitumen Roofing
Modified bitumen combines traditional roofing techniques with modern polymer enhancements, resulting in a flexible and tough material. It performs exceptionally well in extreme weather conditions, providing dependable protection against water ingress while maintaining structural integrity.

Metal Roofing
Metal roofs are celebrated for their exceptional lifespan and resilience. When paired with advanced sealants and waterproof coatings, metal systems provide a highly effective solution for sloped roofs
Benefits of Working With Us
Tailored Solutions for Commercial Properties
Every commercial property has unique roofing requirements, and we excel at crafting customized strategies to meet them. From selecting the most suitable materials to addressing specific climate conditions and roof designs, we deliver solutions designed to enhance performance and durability
Premium Materials and Advanced Techniques
Reliance Roofing uses only industry-leading materials and state-of-the-art waterproofing technologies to deliver unmatched protection. Our expertise in modern techniques guarantees maximum durability and resilience, allowing your roof to withstand environmental challenges over the long term.
.avif)
Comprehensive Support from Start to Finish
From the initial inspection to ongoing maintenance, we provide end-to-end support to ensure your roof remains in optimal condition. Our detailed pre-service inspections identify specific vulnerabilities and guide our tailored approach. After the installation, we offer maintenance plans designed to preserve the integrity of your waterproofing system.

Why Roof Waterproofing Is a Smart Choice
- Water intrusion can lead to structural deterioration, mold growth, and expensive repairs. Waterproofing acts as a protective shield, preventing leaks and extending the life of your roof.
- A well-maintained, waterproofed roof adds significant value to commercial properties, providing future buyers with confidence in the property's durability and reducing concerns over potential issues.
- Modern waterproofing materials often include reflective properties that help regulate indoor temperatures, reducing energy consumption for cooling and heating.

Is It Too Late for Roof Waterproofing?
- Many property owners worry they've waited too long to waterproof their roofs, but even damaged roofs can often be salvaged with professional expertise.
- Visible leaks, sagging sections, persistent water pooling, or deteriorated roofing materials may indicate extensive damage. These issues are signals that action is needed to prevent further deterioration.
- A thorough inspection by roofing professionals can determine if waterproofing is still an option. In many cases, even roofs with moderate damage can be rehabilitated to prepare for effective waterproofing.
- For damaged roofs, the process begins with repairing compromised areas, such as patching leaks, reinforcing weak spots, or replacing worn sections. Once the roof is structurally sound, waterproofing materials and techniques can be applied to safeguard it against future challenges.
FAQs
What are the best roof waterproofing solutions for commercial properties?
The best solutions include EPDM for its durability, TPO for energy efficiency, PVC for chemical resistance, and built-up roofing for heavy-duty protection.
How does a roof waterproofing treatment work?
The process involves cleaning the roof, applying a waterproofing membrane or coating, and sealing all joints and edges to prevent water infiltration.
What is the most effective roof waterproofing material for flat roofs?
EPDM offers exceptional durability and flexibility, TPO excels in energy efficiency, and PVC provides superior chemical and fire resistance. The choice depends on budget, environmental conditions, and specific property needs.
What are the steps involved in waterproofing a roof?
The process begins with an inspection to assess the roof's condition. It is followed by selecting the appropriate material, applying it precisely, and ensuring proper sealing. Regular maintenance is the final step to maximize longevity.
How long does a roof waterproofing solution last?
The lifespan varies by material, with EPDM lasting up to 30 years, TPO and PVC around 20-25 years, and built-up roofing exceeding 20 years.