What is an Elastomeric Roof Coating?

Understanding the benefits and applications of elastomeric roof protection systems for long-lasting durability and energy efficiency.

Elastomeric roof coatings are advanced protective systems that have revolutionized roof maintenance and restoration. These high-performance coatings create a seamless, rubber-like membrane over your existing roof surface, providing exceptional waterproofing, UV protection, and energy efficiency benefits.

The term "elastomeric" comes from "elastic" and "polymer," describing the coating's unique ability to stretch and return to its original shape. This flexibility allows elastomeric coatings to expand and contract with temperature changes without cracking or peeling, making them ideal for the demanding conditions roofs face year-round.

Key Characteristics

Exceptional Flexibility

Can stretch up to 300-600% of its original size and return to normal without damage, accommodating building movement and thermal expansion.

Seamless Waterproofing

Forms a continuous membrane with no seams or joints, creating a completely waterproof barrier that prevents leaks and moisture infiltration.

Superior UV Reflection

High-quality elastomeric coatings reflect up to 85-90% of UV rays, protecting the roof substrate and significantly reducing cooling costs.

Long-Lasting Durability

Properly applied elastomeric coatings can last 10-15 years or more, providing excellent long-term value and protection for your roof investment.

Composition and Chemistry

Elastomeric roof coatings are formulated from advanced polymer chemistry, typically using one of several base materials:

Acrylic Elastomeric Coatings

Water-based formulations that offer excellent UV resistance, breathability, and environmental friendliness. Ideal for most climates and roof types.

• Easy cleanup with water
• Low VOC emissions
• Excellent color retention

Silicone Elastomeric Coatings

Premium formulations with superior water resistance and weathering characteristics. Excellent for ponding water situations.

• Outstanding resistance to ponding water
• Maintains flexibility in extreme temperatures
• Self-cleaning properties

Polyurethane Elastomeric Coatings

High-performance coatings known for exceptional durability and impact resistance. Often used in high-traffic applications.

• Superior abrasion resistance
• Excellent adhesion properties
• High tensile strength

Major Benefits of Elastomeric Roof Coatings

Energy Cost Reduction

White or light-colored elastomeric roof coatings can reduce roof surface temperatures by 50-80°F compared to dark, uncoated roofs. This dramatic temperature reduction translates to:

• 20-40% reduction in cooling costs during summer months
• Decreased HVAC system wear and extended equipment life
• Improved indoor comfort and temperature consistency
• Potential rebates and incentives from energy companies

Cost-Effective Roof Restoration

Elastomeric coatings offer a fraction of the cost of complete roof replacement while extending roof life significantly:

• Typical cost is 15-30% of complete roof replacement
• Extends roof life by 10-15 years when properly maintained
• Avoids tear-off and disposal costs
• Minimal business disruption during application

Environmental Sustainability

Elastomeric coatings contribute to environmental protection and sustainability goals:

• Reduces landfill waste by avoiding roof tear-offs
• Lowers carbon footprint through reduced energy consumption
• Many formulations are low-VOC or zero-VOC
• Contributes to LEED certification points

Comprehensive Protection

Elastomeric coatings provide multi-faceted protection against various threats:

• Waterproofing prevents leaks and water damage
• UV protection prevents substrate degradation
• Resistance to mold, mildew, and algae growth
• Protection against thermal shock and cycling

Ideal Applications

Elastomeric roof coatings are versatile and can be applied to various roof types and situations:

Roof Types

✓ Metal roofs (galvanized steel, aluminum)
✓ Built-up roofing (BUR) systems
✓ Modified bitumen roofs
✓ Single-ply membranes (TPO, EPDM)
✓ Concrete and masonry surfaces
✓ Spray polyurethane foam (SPF)

Building Types

✓ Commercial buildings and warehouses
✓ Industrial facilities and manufacturing
✓ Multi-family residential complexes
✓ Schools and institutional buildings
✓ Retail centers and strip malls
✓ Single-family homes with flat or low-slope roofs

Application Process Overview

Surface Preparation

Clean and repair the existing roof, removing all dirt, debris, and loose material. Address any damage or defects.

Primer Application (If Required)

Apply appropriate primer based on roof substrate type to ensure proper adhesion of the elastomeric coating.

Base Coat Application

Apply the first coat of elastomeric coating at the specified thickness using roller, brush, or spray equipment.

Topcoat Application

Apply one or more additional coats to achieve the recommended total thickness and optimal performance.

Curing and Inspection

Allow proper cure time and conduct thorough inspection to ensure complete coverage and quality results.

Note: For detailed application instructions, see our step-by-step application guide.

Maintenance and Care

While elastomeric coatings are highly durable, proper maintenance ensures maximum longevity and performance:

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Inspect roof twice annually (spring and fall) for damage or wear

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Remove debris, leaves, and standing water promptly

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Clean surface annually with mild detergent and water

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Address minor damage immediately to prevent larger problems

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Plan for recoating every 10-15 years depending on climate and conditions

The Bottom Line

Elastomeric roof coatings represent one of the most cost-effective and sustainable solutions for roof protection and restoration. Their unique combination of flexibility, waterproofing capabilities, UV reflection, and longevity makes them an excellent choice for building owners looking to extend roof life while reducing energy costs.

Whether you're managing a commercial building, maintaining an industrial facility, or protecting your home, elastomeric roof coatings offer proven performance backed by decades of successful applications. When properly selected, applied, and maintained, these advanced coating systems deliver exceptional value and peace of mind for years to come.