Flame-Resistant vs. Flame-Retardant Treatments: What the Difference Really Means for Your Commercial Space

If you've ever spec'd artificial greenery for a hotel lobby, hospital corridor or government building, you've probably seen the terms "flame resistant" and "flame retardant" used interchangeably. The labels are not always used consistently, so for commercial artificial greenery, the practical distinction is whether the fire-retardant property is incorporated during manufacturing or applied afterward as a topical treatment.

Here's the short version: built-in IFR protection is part of the foliage material, while a topical treatment sits on its surface. That manufacturing difference can affect cleaning, maintenance and documentation.

What Is a Topically Treated Flame-Retardant Product?

Some artificial greenery receives a post-manufacturing fire-retardant spray or soak. In these products, the fire-retardant treatment is a topical finish rather than part of the foliage material.

A topical treatment can be appropriate for some applications. Depending on its formulation and care instructions, however, cleaning or washing may reduce the treatment, and some products can leave surface residue.

If documentation or periodic review is required for a project, confirm whether a topically treated product needs reapplication or retesting after cleaning or over time.

What Is IFR and Why Does the Manufacturing Method Matter?

For our documented IFR polyester and polyethylene foliage groups, the fire-retardant additive is incorporated into the material during manufacturing rather than applied afterward. It will not wash away or leave the oily surface residue associated with some topical applications. IFR does not mean nonflammable; it describes how the fire-retardant property is incorporated.

That is the practical distinction: built-in IFR protection versus a post-applied surface treatment. Because fire-safety terminology is not always used consistently, the applicable test report matters more than the label alone.

For facilities and procurement teams, built-in IFR foliage simplifies routine care because cleaning does not remove a topical coating. The applicable fire-test documentation is tied to the foliage-material group.

IFR Lineup at Silks Are Forever

Documentation depends on the foliage material. Our documented polyester foliage group has an ASTM E84 report with Class A results, including a Flame Spread Index of 0 and Smoke Developed Index of 130. The NFPA 701 Method 1 report for our documented polyethylene (LDPE) foliage group concludes that the tested material passed. Both documented groups have current California State Fire Marshal Fabric Registration under Health and Safety Code Section 13115. These documents are shared by foliage-material group rather than issued separately for every SKU and are available upon request after purchase. Products with "IFR PVC" in the title do not have a material-specific fire-test report.

The IFR line covers the full spectrum of what commercial designers typically need:

• IFR Trees: Large-format statement trees for lobbies, atriums, and common areas
• IFR Tropical Plants & Trees: Tropical varieties that work in hospitality and resort interiors
• IFR Plants & Greenery: Tabletop and floor-level greenery for offices, healthcare spaces, and retail environments
• IFR Garland: For decorative installations, seasonal displays, and architectural accents
• IFR Flowers: Floral accents and arrangements for event spaces, guest rooms, and reception areas

If you want a broader look at why commercial buyers are making the switch, the 7 Benefits of Fire-Retardant Plants post covers the business case well.

Frequently Asked Questions: Flame Resistant vs. Flame Retardant

Do IFR artificial plants still need to pass a fire marshal inspection, or does the IFR rating automatically satisfy code?

IFR identifies how the fire-retardant property is incorporated into the foliage material. Our documented polyester foliage group has an ASTM E84 report with Class A results, and the NFPA 701 Method 1 report for our documented polyethylene foliage group concludes that the tested material passed. Both documented groups have current California State Fire Marshal registration. A reviewer may use those shared documents or request a product sample for an on-site field evaluation.

Can IFR artificial plants be used outdoors, or is the rating only relevant for interior commercial spaces?

The IFR designation addresses flammability, not weatherproofing. Those are separate product properties. Most IFR artificial plants are for interior use, and Silks Are Forever recommends checking individual product listings for outdoor suitability. If you need both fire-retardant performance and outdoor durability, look for products rated for exterior use in addition to their IFR designation.

What fire-test documentation should I look for when purchasing IFR artificial plants?

Ask for documentation matching the product's foliage material. Our documented polyester foliage group has an ASTM E84 report with Class A results, while the NFPA 701 Method 1 report for our documented polyethylene foliage group concludes that the tested material passed. Both documented groups have current California State Fire Marshal Fabric Registration. Reports are shared by foliage-material group rather than issued separately for every SKU and are available upon request after purchase. Products with "IFR PVC" in the title do not have a material-specific fire-test report.