Think Twice Before Choosing Acrylic Over Silicone Coatings
Are you weighing restoration options for your commercial roof — and trying to decide between silicone and acrylic coatings? At West Roofing Systems, we've helped hundreds of building owners navigate this exact decision. In this article, you'll learn the key differences between acrylic and silicone coatings, when each performs best, and why your contractor's expertise may matter more than the product itself.
Key Differences Between Acrylic and Silicone Roof Coatings
The most important distinction is solids content — how much of the product remains on your roof after it dries. Acrylic coatings are typically around 55% solids, meaning roughly 45% evaporates during curing. High-solids silicone coatings are typically 95% solids, so nearly everything you apply stays on the roof. To reach the same dry film thickness that silicone achieves in a single coat, acrylic may require two, three, or even four coats — meaning more labor and more material.
When Acrylic Roof Coatings Might Cost More Over Time
Acrylic coatings are commonly marketed as more affordable — and in terms of initial material cost, that's often true. But in regions with heavy rainfall, snow loads, or flat roofs with standing water, acrylic coatings may require frequent recoats. Missing a recoat deadline will void the manufacturer's warranty, and each recoat typically costs around 50% of the original installation. Over a 20-year span, these costs can surpass the investment of going with silicone from the start.
When Acrylic Roof Coatings Are a Good Fit
Acrylic can be a smart, cost-effective choice in the right environment — specifically dry, warm regions with minimal snow or ponding water, where the roof has proper slope and drainage. Some newer high-build acrylics are closing the gap in thickness and durability, making them viable in select applications. The key takeaway: acrylic isn't a bad product — it's just not the best solution for every roof.
Why Choosing the Right Contractor Matters
The product you choose is only as good as the contractor who applies it. A knowledgeable contractor will assess your roof's condition, slope, insulation, and drainage, then determine which coating makes the most sense. At West Roofing Systems, we make recommendations based on your building's actual needs — not what's easiest or cheapest to sell.
Making the Right Choice for Your Roof
Silicone coatings typically deliver better long-term performance on flat or low-slope roofs in wet or snowy climates. Acrylic may be suitable for buildings in dry, warm climates with good drainage. The right decision depends on your building's climate, roof slope and condition, budget, and the experience of the contractor you hire.