ASTM D6083
Liquid Applied Acrylic Coating Used in Roofing
Last updated: March 28, 2026
Overview
ASTM D6083/D6083M is the standard specification for liquid-applied acrylic coatings used in roofing. It sets the minimum performance requirements that an acrylic elastomeric roof coating must meet to be considered compliant. The current revision is D6083/D6083M-24, maintained under ASTM Committee D08 on Roofing and Waterproofing.
Manufacturers, architects, and spec writers reference D6083 when specifying acrylic roof coatings for commercial and residential projects. If you are buying or specifying an elastomeric roof coating, this is the standard that tells you whether the product can actually perform on a roof long-term.
Quick reference: D6083 covers acrylic coatings only. For silicone roof coatings, see ASTM D6694. For polyurethane roof coatings, see ASTM D6947. Each chemistry has its own standard with different test requirements.
Key Requirements
D6083 defines minimum performance thresholds across several test categories. A product must pass all of these to claim conformance.
| Property | Requirement | Test Method |
|---|---|---|
| Tensile Strength | 200 psi minimum | ASTM D412 |
| Elongation | 100% minimum | ASTM D412 |
| Permeance | 12 perms maximum | ASTM E96 |
| Accelerated Weathering | 2,000 hours minimum | ASTM G154 or G155 |
| Low-Temperature Flexibility | Pass at -10 F | ASTM D522 |
| Dirt Pickup | 15% reflectance loss maximum | D6083 procedure |
| Volume Solids | 50% minimum | D6083 procedure |
What These Numbers Mean in Practice
The tensile strength and elongation requirements ensure the coating can stretch and recover as the roof expands and contracts through temperature cycles without cracking. A coating with higher elongation handles more thermal movement.
The permeance limit (12 perms max) means the coating resists water penetration while still allowing some vapor transmission. This is important because a completely impermeable coating can trap moisture in the roof assembly.
The 2,000-hour accelerated weathering test simulates years of UV exposure. Products that pass this retain their flexibility and reflectivity after prolonged sun exposure.
Watch out: D6083 sets minimum thresholds. Premium products often exceed these by a wide margin. For example, a high-quality acrylic coating might have 400% elongation vs. the 100% minimum. Check the Technical Data Sheet for actual tested values, not just "meets D6083."
How It's Used
D6083 shows up in three main ways in the roofing industry:
Spec Writers and Architects
When writing a roof coating specification for a commercial project, the spec writer will reference D6083 as the baseline. A typical spec line reads something like "Acrylic roof coating shall comply with ASTM D6083." This ensures that any product submitted for the job meets a known performance floor.
Manufacturers
Coating manufacturers test their products to D6083 and publish the results on the Technical Data Sheet (TDS). A compliant product will state "Meets ASTM D6083" and list the individual test results. Some manufacturers also pursue third-party testing through labs to provide independent verification.
Contractors and Building Owners
If you are hiring a contractor to coat your roof, or you are the contractor selecting a product, D6083 gives you a way to compare products on a level playing field. You can pull the TDS from two competing products and compare their D6083 test results side by side. For a detailed walkthrough of the application process, see our guide on applying elastomeric roof coating.
Tip: When reviewing a TDS, look at the actual tested values, not just pass/fail. A product with 350 psi tensile and 300% elongation will generally outperform one that barely clears the 200 psi / 100% minimums.
Frequently Asked Questions
Does my roof coating need to meet D6083?
It depends on the project. Many commercial roofing specifications require D6083 compliance, so if you are working on a spec job, it is likely required. For residential DIY projects, there is no code requirement to use a D6083-compliant product, but choosing one gives you confidence the coating has been tested to a recognized standard.
How do I check if a product meets D6083?
Look at the product's Technical Data Sheet (TDS), which is usually available on the manufacturer's website or by request. Compliant products will list "ASTM D6083" or "Meets ASTM D6083" along with specific test results for tensile strength, elongation, permeance, and weathering. If the TDS does not mention D6083, the product has not been tested to this standard.
What's the difference between D6083 and D6694?
D6083 covers acrylic roof coatings and D6694 covers silicone roof coatings. They are different chemistries with different performance characteristics. Acrylics are water-based, typically less expensive, and work well in moderate climates. Silicones handle ponding water better and resist UV without degrading, but cost more. Each standard has test requirements tailored to its coating type.
Does D6083 cover all types of roof coatings?
No. D6083 is specific to acrylic coatings. Silicone coatings fall under D6694, polyurethane coatings under D6947, and asphalt emulsion coatings under D1227. Make sure you are referencing the correct standard for the coating chemistry you are using.
