Single-ply roofing systems are a popular and efficient option for commercial buildings. Known for their durability, energy efficiency, and ease of installation, they are designed to provide long-lasting protection with minimal maintenance. Whether you’re looking for a cost-effective solution or enhanced energy savings, single-ply roofs offer a versatile choice for businesses.

At SCR Inc., we bring over 25 years of experience to single-ply roofing installations in the Dallas-Fort Worth area. As experts in residential and commercial roofing, we install your single-ply roof to the highest standards, delivering optimal performance and long-term value for your property.

 

Call SCR Inc. at 972-839-6834 for Single-ply roofing services!

 

What is Single-Ply Roofing?

Single-ply roofing refers to a roofing system made from large sheets of flexible, synthetic material, typically composed of thermoplastics (like TPO or PVC) or thermosets (like EPDM). These sheets are manufactured in a factory to ensure uniformity and are then rolled out and adhered or mechanically fastened to the roof’s surface.

Structure: Each sheet is a single, uniform layer (hence “single-ply”), unlike multi-layered systems like built-up roofing (BUR).

Purpose: They act as a protective waterproof barrier over flat or low-sloped roofs, preventing water infiltration while offering insulation.

 

Types of Single-Ply Roofing Systems

Single-ply roofing systems are made from different materials, each with unique characteristics that make them suitable for various applications. Below are the three most common types: TPO, EPDM, and PVC.

1. TPO Roofing

• Characteristics and Advantages
  Thermoplastic Polyolefin (TPO) roofing is a single-ply membrane composed of polypropylene and ethylene-propylene rubber polymers. It is known for its heat-reflective properties and flexibility. TPO roofing is typically white or light-colored, which helps reduce the heat absorbed by the building. This reflective quality contributes to lower cooling costs.
• Common Applications and Uses
  TPO is frequently used in commercial applications, particularly for flat or low-sloped roofs. Its resistance to ultraviolet (UV) radiation, ozone, and chemicals makes it suitable for areas with intense sunlight or exposure to harsh environments.
• Energy Efficiency and Cost-Effectiveness
  TPO’s reflective surface helps lower cooling energy costs, especially in warmer climates. It also offers a cost-effective solution compared to other single-ply roofing options, balancing performance and affordability. TPO’s ease of installation can also contribute to lower overall project costs.

2. EPDM Roofing

• Characteristics and Advantages
  EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber material recognized for its outstanding durability and flexibility. It is highly resistant to extreme weather conditions, including heat, cold, and UV radiation. EPDM membranes are typically black, although white options are available.
• Durability and Lifespan
  EPDM is recognized for its long lifespan, often lasting 25 to 30 years when properly installed and maintained. It is highly resistant to tears, punctures, and impacts, making it an ideal choice for roofs exposed to potential physical damage.
• Cost Considerations
  While EPDM is typically more affordable than other single-ply roofing materials like PVC, its installation costs can vary depending on the complexity of the roof design. However, its longevity and low maintenance needs often make it a cost-effective option in the long term.

3. PVC Roofing

• Characteristics and Advantages
  PVC (Polyvinyl Chloride) is a durable, thermoplastic membrane known for its superior strength and chemical resistance. A thermoplastic membrane is a material made with a synthetic substance that softens when heated and rehardens when cooled. It is typically white or light-colored, offering excellent reflectivity. PVC is resistant to grease, oils, and chemicals, which makes it ideal for roofing applications in environments where chemical exposure is common.
• Strength and Resistance to Chemicals
  PVC’s resistance to chemical exposure makes it a top choice for industries like food processing, manufacturing, and pharmaceutical facilities. The material is also highly punctured-resistant, making it ideal for high-traffic roof areas.
• Best Use Cases and Longevity
  PVC is especially beneficial in areas prone to chemical spills or high heat. Its resistance to weathering and UV radiation ensures long-term protection. When properly installed, PVC roofing systems can last up to 30 years, offering reliable performance in demanding environments.

 

Maintenance Tips for Single-Ply Roofing

 

Conduct Routine Inspections

Regular inspections allow for early wear and tear detection, helping avoid expensive repairs. It is crucial to inspect the roof at least twice a year and after major weather events.

How to Spot Potential Issues Early?

• Check for cracks and punctures: Inspect the membrane for visible damage, especially near seams, flashing, and around vents or HVAC units.
• Look for blisters or bubbles. These can indicate trapped moisture that, if not addressed, may lead to larger issues.
• Assess seam integrity: Ensure that seams remain intact and free of degradation.

 

 Clean and Remove Debris

Debris buildup can block drains and lead to water pooling on the roof, which increases the risk of leaks. Regular cleaning keeps drainage systems clear and prevents water damage.

Safe Practices for Cleaning Roofs

• Use non-abrasive tools: Soft brooms or leaf blowers are ideal for removing debris without damaging the membrane.
• Avoid harsh chemicals: Use mild cleaning solutions that won’t break down the roofing material.
• Ensure proper drainage: Check and clear gutters and drainpipes regularly to avoid clogs that could result in water buildup.

 

 Address Repairs Promptly

Small tears or punctures should be repaired promptly to prevent water infiltration. Apply a roof patch or sealant to cover the damaged area, ensuring it adheres well.

 

Pros of Single-Ply Roofing

 

1. Energy Efficiency

• Reflective and Retentive Membranes
  Single-ply membranes have distinct thermal properties that contribute to energy efficiency. Reflective membranes, like TPO and PVC, are designed to reflect sunlight and solar radiation away from the building. This reduces heat absorption, lowering the need for air conditioning and reducing cooling costs, especially in warmer climates. In contrast, retentive membranes, such as EPDM, absorb heat during the day and release it at night, helping maintain warmth in cooler climates and reducing heating costs.
• Applications Based on Climate
  Reflective membranes are ideal for buildings in hot climates, as they help prevent excessive heat buildup, contributing to a cooler indoor environment. Retentive membranes are better suited for cold climates, where retaining heat is important for energy savings.

2. Durability and Longevity

• Weather Resistance
  Single-ply roofing systems are built to withstand extreme weather conditions. They resist damage from UV radiation, high winds, and heavy rains. These membranes are built to last, typically enduring for 20 to 30 years. The exact lifespan depends on the material used and the level of maintenance.
• Low Maintenance Requirements
  The simple design of single-ply systems with fewer seams results in a roof requiring less maintenance. This reduces the frequency and cost of inspections and repairs, providing long-term value to the building owner. 

3. Cost-Effectiveness

• Installation Costs vs. Long-Term Savings
  Single-ply roofing systems are generally more affordable to install than traditional multi-layer systems. The installation process is faster, reducing labor costs and minimizing business disruptions. Over the long term, single-ply roofs offer savings through energy efficiency, reduced maintenance, and a longer lifespan.
• Extended Roof Life and Reduced Energy Costs
  Single-ply systems’ durability and energy-saving properties help lower operational costs over time. Their reflective or heat-retentive properties contribute to reduced energy consumption, while their longevity ensures fewer roof replacements, saving money in the long run.

4. Quick Installation Process

• Efficient Installation
  Due to its simplified application, single-ply roofing is quicker to install than traditional roofing methods. The lightweight nature of single-ply materials also speeds up the installation process, reducing labor costs and minimizing downtime for businesses.
• Minimized Disruption to Business Operations
  Faster installation ensures minimal disruption to daily business activities. The quicker process allows businesses to return to normal operations as soon as possible, making single-ply roofing an attractive choice for commercial properties.

5. Seamless Application

One key advantage of single-ply roofing is its seamless application. Fewer seams reduce the risk of leaks and water infiltration, providing superior waterproofing and protecting the building from water damage.

6. Lightweight

• Less Burden on Building Structure
  Single-ply membranes are much lighter compared to traditional roofing systems. This reduces the load on the building’s structure, which is especially important for older buildings or those with structural limitations.
• Easier to Handle During Installation
  Due to their lightweight nature, single-ply materials are easier to transport and install, reducing labor costs and speeding up the installation process.

 

 Cons of Single-Ply Roofing

While single-ply roofing has many benefits, it also has some drawbacks, including susceptibility to punctures and a shorter lifespan than multi-ply systems.

1. Vulnerability to Punctures

Single-ply membranes are more prone to punctures, especially from foot traffic or sharp objects. To prevent puncture damage, use walkways and ensure proper maintenance.

2. Shorter Lifespan Compared to Multi-Ply Systems

Single-ply roofs typically last 20-30 years, while multi-ply systems can last longer, up to 40 years. Regular maintenance and repairs can extend the life of a single-ply roof and ensure optimal performance.

 

Installation of Single-Ply Roofing

 

 1 – Preparation of the Roof Deck

• Cleaning the Roof Surface
  Before any installation begins, the roof deck must be thoroughly cleaned. This involves removing debris, dust, or old roofing material that may interfere with the new membrane’s adhesion. A clean surface ensures that the membrane adheres properly, preventing future issues.
• Inspection of the Roof Deck
  The roof deck should be inspected for any damage or weaknesses. Any areas with structural damage must be repaired before the membrane is applied. This is critical to ensure a stable base for the new roof.

2 – Installation of Insulation (if Required)

In some cases, insulation is added before the membrane. Options include rigid foam or spray foam insulation. The insulation choice depends on the building’s thermal needs and local climate.

a: Rigid Foam Insulation

Rigid foam insulation, typically made from polystyrene, polyisocyanurate, or polyurethane, provides high thermal resistance (R-value). It is durable, moisture-resistant, and lightweight, making it a reliable option for energy efficiency in commercial buildings.

Rigid foam insulation is ideal for flat or low-slope roofs in commercial buildings, especially in colder climates, where superior thermal resistance is needed. It works well with single-ply membranes like TPO or EPDM.

b: Spray Foam Insulation

Spray foam insulation expands on application, sealing gaps and offering superior air and moisture barriers. It provides high thermal performance and eliminates the need for separate vapor barriers.

Spray foam requires specialized equipment for application and curing. It is sprayed directly onto the roof deck and covered with a single-ply membrane. Proper surface preparation and even application are essential for optimal performance.

Insulation boards are typically secured using adhesive, mechanical fasteners, or a combination. Proper insulation installation improves energy efficiency and ensures the stability of the roofing system.

 3 – Laying the Membrane

• Unrolling the Membrane
  The single-ply membrane, typically made of TPO, PVC, or EPDM, is unrolled across the roof. It is important to ensure that the membrane is aligned properly to avoid wrinkles or uneven surfaces.
• Cutting and Fitting the Membrane
  The membrane should be cut to fit the specific dimensions of the roof. Special attention is given to areas around vents, skylights, and other penetrations to ensure a tight and secure fit.

 4 – Making Her Secure

• Mechanical Fastening or Adhering
  Depending on the type of single-ply membrane and the roofing system, the membrane can be secured using mechanical fasteners or adhesives. Mechanical fastening involves attaching the membrane with screws or plates, while adhesive is used to bond the membrane directly to the substrate.
• Sealing the Seams
  Seams must be properly sealed after the membrane is secured to prevent leaks. Depending on the material, this can be done using heat welding, adhesives, or tape. Properly sealed seams are essential for preventing water penetration.

 5 – Installing Flashings

Flashings are installed around roof penetrations such as vents, pipes, and HVAC units. They ensure that these areas are properly sealed and protected from water infiltration, which is critical for maintaining the integrity of the roof system.

 6 – Final Inspection

Once the roof is fully installed, a final inspection is conducted to ensure the membrane is appropriately adhered to and sealed. We address any weak spots or potential issues before completing the work.

Finally, the roof is tested for waterproofing by applying water or inspecting for leaks. This step confirms the roof’s ability to protect the building from water damage.

 

Is a Single-Ply Roofing System the Right Choice for Your Commercial Building?

Single-ply roofing systems may be suitable in many cases, but it’s important to consider specific circumstances before deciding. 

• Climate – The local climate is crucial in determining the right roofing material. Single-ply membranes like TPO and PVC are most beneficial in warmer climates due to their reflective properties, which reduce heat absorption. In contrast, EPDM suits colder regions better, where retaining heat is more beneficial.
• Building Structure and Roof Pitch – Single-ply roofing systems are ideal for flat or low-slope roofs, which allow water to pool. If your building has a steep-pitched roof, other roofing materials may be a better option due to their ability to handle water runoff effectively.

 

Choose SCR Inc. for Your Single-Ply Roofing Needs in DFW

At SCR Inc., we specialize in installing, maintaining, and repairing single-ply roofing systems. With over 25 years of experience in the roofing industry, we offer high-quality solutions tailored to your building’s needs. 

Whether you’re looking for energy-efficient roofing, fast installation, or long-term durability, our team ensures a seamless and professional experience. 

Contact us today at 972-839-6834 to learn more about our Single-Ply Roofing services.

 

FAQs

 

What is the minimum fall for a single-ply roof?

The minimum fall for a single-ply roof is typically 1:80, or a 1.25% slope. This ensures proper water drainage, preventing pooling and potential water damage. The exact slope may vary depending on local building codes and manufacturer recommendations.

Is single-ply roofing any good?

Yes, single-ply roofing is a highly effective and cost-efficient solution for commercial buildings. It offers quick installation, energy efficiency, and minimal maintenance. It is especially suitable for flat or low-slope roofs and provides long-lasting protection when properly installed.

What is the life expectancy of a single-ply roof?

The life expectancy of a single-ply roof typically ranges from 20 to 30 years, depending on the material used (such as TPO, PVC, or EPDM), installation quality, and maintenance. 

Can you walk on a single-ply roof?

Yes, you can walk on a single-ply roof, but it is essential to take precautions. Excessive foot traffic or sharp objects can damage the membrane. Designated walkways or protective materials should be used for safety and to prevent damage. Always follow manufacturer guidelines for safe use.