What Class A Fire Rated Actually Means
If a builder, architect or inspector has told you a wall finish needs to be Class A, here is what that means in plain terms — and what it does not mean.
The short version
Class A is the top result of a standard test called ASTM E84. It measures two things about how a material's surface behaves in a fire:
- Flame-spread index — how fast fire travels across the surface
- Smoke-developed index — how much smoke it produces
To be Class A, a material must score 0 to 25 for flame spread and 0 to 450 for smoke. Class B is 26 to 75 flame spread. Class C is 76 to 200.
The test runs the material as a ceiling in a 24-foot tunnel with gas burners at one end, and measures how far the flame travels over ten minutes.
What Class A does not mean
This is the part that gets people into trouble.
It does not mean fireproof. Class A materials burn. The rating describes how the surface behaves relative to other materials, not whether it survives a fire.
It does not mean non-combustible. That is a different standard entirely — ASTM E136 — and no polyurethane panel meets it.
It does not mean you can put it next to a flame. Fireplace and stove clearances are set by the appliance manufacturer and local code, and they apply regardless of the panel's rating.
If someone selling you cladding implies Class A means fireproof, be careful about what else they are implying.
When you actually need it
Most residential interior walls do not require a rated finish. Class A tends to come up in:
- Commercial interiors — restaurants, hotels, offices, retail
- Corridors and exit routes, where codes are stricter than for rooms
- Multi-family housing, especially shared spaces
- Anywhere an architect has specified it, whether or not code demands it
If you are covering a feature wall in your own living room, you probably do not need it. If a contractor or inspector has asked, you do — and you will likely be asked for the test report.
Where Tritan BP stands
Some of our collections are Class A and some are not, and it comes down to where they are made. We split manufacturing between two facilities based on demand, and the material used in one of them carries the Class A rating.
The rated list, by collection and color, is on our fire and compliance page. Every product page also names its own rating where it has one, and says nothing where it does not.
We publish the list rather than a blanket claim, because a blanket claim is how someone ends up specifying a panel that has not been tested.
If the color you want is not on the list
Most of our range can be produced in a Class A version to order.
There is an upcharge and a lead time, and it needs quoting per project. But it means you are not forced to change the look of a wall to meet a specification.
Call or text 866-771-2345 and tell us the collection, the color and the square footage. We will come back with a price and a lead time.
Getting the paperwork
Specifiers and inspectors usually want the test report itself, not a line on a website.
Ours is available on request. Email support@tritanbp.com with the collection and color and we will send it.
A word on honesty here
Fire ratings are the one claim in this industry where being loose with the truth has consequences beyond a refund.
We have been through every page of our own site to make sure what we say about fire matches what has actually been tested, collection by collection and color by color. Where a product is not rated, we say nothing rather than implying something.
If you are comparing suppliers, it is a fair question to ask any of them: which specific products are rated, and can I see the report?
Questions
Call or text 866-771-2345 — Monday to Friday, 8:30 AM to 5:00 PM ET
support@tritanbp.com
If you are working to a specification and are not sure what it requires, send it to us. We have been doing this for twenty-five years and we would rather help you get it right than sell you the wrong panel.