Silicone Roof Coating in Toms River, NJ
Silicone roof coating is one of the most cost-effective options available for commercial property owners who need to extend the service life of an aging low-slope roof without the expense and disruption of full replacement. Applied over a sound existing roof membrane, silicone coating restores waterproofing performance, dramatically improves solar reflectance, and protects the underlying membrane from UV degradation — delivering measurable value at a fraction of replacement cost. Toms River Roofing Contractor applies silicone roof coating systems to commercial roofs throughout Ocean County, NJ, using premium-grade silicone products that perform in coastal UV environments and carry manufacturer warranties of 10–15 years.
What Is Silicone Roof Coating?
Silicone roof coating is a solvent- or water-based liquid silicone polymer formulation applied to an existing commercial roof membrane to form a continuous, flexible waterproofing layer over the existing surface. When applied at the specified thickness and cured, silicone forms a rubber-like coating that is:
- Fully waterproof and ponding-water tolerant
- Highly reflective (SRI 100+) when white-pigmented
- UV-stable — silicone does not degrade or lose reflectance under prolonged UV exposure the way acrylics and urethanes do
- Flexible across a wide temperature range (approximately -60°F to 300°F)
- Resistant to biological growth (algae, mold) in humid coastal environments
Silicone is unique among roof coating chemistries for its tolerance of ponding water. Acrylic elastomeric coatings soften and degrade under prolonged water immersion. Silicone retains its performance properties indefinitely in ponding water conditions — a critical advantage for flat commercial roofs where positive drainage is difficult to achieve consistently.
Candidate Substrates: Where Silicone Coating Applies
Silicone roof coating is appropriate over the following substrates when they are in sound condition:
Modified Bitumen Roofing — One of the most common silicone coating applications. Aging modified bitumen cap sheets lose granule coverage and UV protection over time. Silicone coating over a sound modified bitumen substrate extends the roof life by 10–15 years and improves reflectance from approximately 0.10 (dark granule) to 0.80+ (white silicone).
Built-Up Roofing (BUR) — Silicone can be applied over cleaned, sound aggregate-surfaced BUR. The existing aggregate must be removed or pressure-washed before coating. Silicone primer is typically required for adhesion to asphalt surfaces.
Spray Polyurethane Foam (SPF) — Silicone is the standard and preferred coating for SPF roofing systems. When the original silicone coating on an SPF roof reaches the end of its service life, a fresh coat of silicone is applied over the existing foam — renewing the system without replacing the foam substrate.
Single-Ply Membranes (EPDM, TPO, PVC) — Silicone can be applied over aging single-ply membranes to extend service life and improve energy performance, using manufacturer-approved primers for adhesion.
Metal Roofing — Silicone coating over metal panels provides corrosion protection, improves reflectance, and seals lap joint sealant failures. Particularly relevant for older exposed-fastener metal roofs in Ocean County's salt-air environment.
Is My Roof a Candidate for Coating?
Silicone coating is not appropriate for every roof. The existing membrane must be structurally sound to serve as a substrate. Key disqualifying conditions include:
- Significant embedded moisture in the insulation (wet insulation below the membrane cannot be corrected by a surface coating)
- Widespread membrane delamination, blistering, or severe shrinkage
- Structural deck damage
- Accumulated moisture greater than 25% of total roof area (see thermal imaging)
Before recommending silicone coating, we conduct a thorough roof assessment including visual inspection, core sampling, and thermal imaging where warranted. If the existing roof is not a sound coating candidate, we will tell you — and explain why replacement is the more appropriate solution.
When coating is appropriate, however, it offers compelling value compared to replacement: 30–70% of replacement cost for a system that delivers 10–15 additional years of service and warranty coverage.
Silicone Coating vs. Acrylic Elastomeric Coating: Key Differences
Both silicone and acrylic elastomeric coatings are promoted for commercial roof restoration. The differences are meaningful:
Ponding Water Tolerance — Silicone is rated for permanent ponding water exposure. Acrylic coatings are not — prolonged water immersion causes re-emulsification, surface softening, and premature degradation. For any flat roof where ponding occurs (the majority of commercial flat roofs), silicone is the more appropriate specification.
UV Stability — Silicone maintains its reflectance and performance properties indefinitely under UV exposure. Acrylic coatings can chalk, yellow, and lose reflectance over time.
Cost — Silicone costs more per gallon than acrylic elastomeric coating. For roofs with ponding water, this premium is justified by significantly longer in-service performance.
Adhesion to Silicone — Silicone surfaces are notoriously difficult to adhere to with anything other than silicone. If a silicone-coated roof is re-coated in the future, it must be re-coated with silicone. This is not a problem in practice — silicone re-coatability is easy and cost-effective — but it is a commitment.
The Coating Application Process
Surface Preparation
Surface preparation is the most critical step and the most frequent cause of coating system failure when it is inadequately performed. Our preparation protocol includes:
- Pressure washing (3,000–4,000 psi) to remove dirt, biological growth, and loose surface materials
- Application of bleach or biocide solution to eliminate algae, mold, and mildew
- Surface drying verification before coating — moisture content testing at multiple locations
- Repair of all seam failures, flashing separations, punctures, and open laps before coating is applied — coating over unsealed defects is not a repair strategy
Primer Application (Where Required)
Many substrates require a system-specific primer to ensure silicone adhesion. Asphalt surfaces (modified bitumen, BUR), metal surfaces, and certain single-ply membranes require primer. We apply primer per manufacturer requirements, including appropriate flash-off time before topcoat application.
Silicone Application
Silicone is applied by spray, roller, or brush depending on application area and substrate conditions. Application is typically two coats — a base coat and a finish coat — to achieve the specified dry film thickness. Our standard commercial specification is 20–32 mils dry film thickness. Thicker applications (30–40 mils) are required for 15-year manufacturer warranty programs.
Documentation and Warranty Registration
Upon project completion, we register the manufacturer warranty, provide all project documentation, and schedule the first-year inspection.
Energy Savings from White Silicone Coating
For a commercial building in Ocean County, NJ, converting a dark-surfaced modified bitumen or BUR roof to a white silicone coating can reduce annual cooling energy consumption meaningfully. The reduction depends on building size, occupancy, HVAC system, and insulation levels, but for single-story commercial buildings with high roof area relative to floor area, silicone coating projects can generate annual electricity savings that partially offset the coating's installed cost over the warranty period.
New Jersey utilities and the New Jersey Clean Energy Program have periodically offered incentives for cool roof installations. We recommend checking current program availability with your utility provider.
Call 732-831-7434 to schedule a silicone roof coating assessment for your Ocean County commercial building.