What is flat roofing?
Flat roofing is a roofing style where the roof surface is nearly level, with a slight slope for drainage. It is commonly used on commercial buildings, modern homes, or in areas with little rainfall. Flat roofs are typically covered with materials like TPO, PVC, or modified bitumen. They offer space for outdoor living areas, HVAC units, or solar panels but can be more prone to water pooling and leakage if not properly maintained.
Types of Flat Roofs
Thermoplastic Olefin (TPO)
TPO is a popular option, especially in Central Texas. It is a reflective single-ply membrane. It offers energy efficiency and durability. It resists weather damage, including UV exposure and high winds.
Ethylene Propylene Diene Monomer (EPDM)
EPDM is made of a durable synthetic rubber that is energy efficient. it can withstand Texas’ extreme temperatures, UV exposure and high winds.
Polyvinyl Chloride (PVC)
PVC is a strong, heat-welded material. It is durable, environmentally friendly, fire resistant and energy efficient.
PVC is commonly used across both residential and commercial roofs.
Modified Bitumen (Mod Bit)
Mod bit is an asphalt-based roofing material reinforced with polymers like fiberglass or polyester. It is flexible, energy-efficient, and highly durable – able to withstand extreme temperatures, high winds and heavy rains.
Built-Up Roofing (BUR)
BUR, or tar and gravel roofing, combines felt and bitumen in layers, sometimes topped with gravel to complete the roof. It is durable – withstanding extreme temperatures, heavy rain, and UV exposure – and often used for commercial buildings.
Ballast
Ballast roofing consists of a single layer waterproof member with a rock top roof. It is durable and can withstand high winds, hail, and UV exposure. In addition, it holds up well people walking on top of it.
How to know if a flat roof is right for you?
Budget
Flat roofs can be more affordable upfront but may require more frequent maintenance over time.
Climate
Withstands extreme temperatures and high winds. Requires proper drainage for areas with heavy precipitation.
Lifespan
On average, flat roofs last about 20 years. Materials, maintenance and weather conditions may affect lifespans of flat roofs.
Design
Flat roofs are ideal for additional outdoor space or solar panels. They are commonly used in commercial buildings.
Total Cost
The cost of flat roofs can vary depending on project size and materials used. Contact us for a quote.
What are the pros and cons of flat roofs?
Flat Roofing Advantages
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Additional Space
Flat roofs can be used for rooftop gardens, green space, patios, solar panels, or HVAC units.
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Easy to Maintain
Flat roofs are simple for technicians to access and repair.
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Aesthetic
Flat roofs are ideal for contemporary or industrial designs.
Flat Roofing Drawbacks
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Poor Drainage
Flat roofs are prone to water accumulation and leaks if not properly sloped.
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Maintenance
While offering a lower upfront cost, flat roofs require regular inspections and maintenance to avoid leaks and damage.
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Energy Efficiency
While the materials used for flat roofs are often energy efficient, flat roofs can have poor insulation unless it is addressed.