Elastomeric Roof Coating Guide

Elastomeric roof coatings are flexible, waterproof membranes that stretch with your roof. They're one of the most popular coating options for Florida's demanding climate.

What Is Elastomeric Coating?

"Elastomeric" means the coating has elastic properties:

• Stretches up to 300% without cracking
• Returns to original shape
• Bridges hairline cracks and gaps
• Creates seamless waterproof membrane

This flexibility is crucial in Florida where temperature swings cause constant expansion and contraction.

Types of Elastomeric Coatings

Acrylic Elastomeric

Water-based, most common type:

• Best for: Metal roofs, modified bitumen, most substrates
• Pros: Affordable, easy application, good reflectivity
• Cons: Not for ponding water, needs recoating sooner
• Lifespan: 5-10 years
• Cost: $1.50-$3 per sq ft

Silicone Elastomeric

Silicone coatings are also elastomeric:

• Best for: Flat roofs with ponding water
• Pros: Handles standing water, UV resistant
• Cons: Higher cost, attracts dirt
• Lifespan: 10-15 years
• Cost: $2.50-$5 per sq ft

Polyurethane Elastomeric

Polyurethane offers maximum durability:

• Best for: High-traffic areas, demanding environments
• Pros: Most durable, impact resistant
• Cons: Highest cost, requires topcoat
• Lifespan: 10-15 years
• Cost: $3-$6 per sq ft

Benefits of Elastomeric Coatings

Waterproofing

Creates seamless protection:

• No seams or joints to leak
• Bridges small cracks automatically
• Self-flashing around penetrations
• Repairs minor damage when properly applied

Energy Savings

White elastomeric coatings reflect heat:

• Up to 85% solar reflectance
• Roof surface 50-80°F cooler
• Reduces AC load significantly
• Can cut cooling costs 10-30%

Extends Roof Life

Protects underlying roof system:

• Shields from UV degradation
• Prevents thermal shock damage
• Adds 10-15 years to roof life
• Can be recoated multiple times

Best Applications

Elastomeric coatings work well on:

• Flat roofs of all types
• Metal roofs (residential and commercial)
• Modified bitumen and built-up roofs
• Concrete and masonry surfaces
• Mobile home roofs

Application Process

Proper application is critical:

1. Inspection: Assess roof condition
2. Repairs: Fix any damage first
3. Cleaning: Power wash thoroughly
4. Priming: If required for substrate
5. Seam treatment: Reinforce seams and penetrations
6. Coating: Apply 2+ coats at proper thickness
7. Curing: Allow proper dry time between coats

When Coating Isn't Enough

Elastomeric coating can't fix everything:

• Severely damaged or deteriorated roofs
• Saturated insulation underneath
• Structural problems
• Multiple layers of failed coatings

In these cases, replacement may be necessary.

Contact us for a roof coating assessment.