Flame Retardants

Rosco Flamex

Completely reformulated to address this wide range of modern materials and to satisfy the broad spectrum of Fire Marshall regulations, Rosco has introduced six new Flamex products. Similar to the original Rosco Flamex range, each of the six new flame retardants is keyed to a specific family of materials and designed for ease of use and to maximize the effective protective treatment.

Rosco Flamex

These advanced new flame retardant materials have been tested and certified according to the appropriate standards by NFPA, ANSI and ASTM and have certificates of approval from the California Fire Marshall and NYC Fire Department.

To order Rosco Flamex, or to answer your specific questions regarding flame retardant treatments, call us at 1-800-243-4950.

Choosing a Flame Retardant

Product Replaces Features  
Roscoflamex NF -
Natural Fiber Flame Retardant
  • Pre mixed, do not dilute
  • No oily residue
  • Very low odor
  • Less likely to bleed through backdrops
Registered with CA & NYC Fire Marshall
Roscoflamex SF -
Synthetic Fiber Flame Retardant
  • Treats a wider variety of synthetic fabrics
  • No powder residue
Registered with CA & NYC Fire Marshall
Roscoflamex DF -
Delicate Fabric Flame Retardant
  • For delicate fabrics with soft drape
  • For fabrics prone to spotting or stiffening
  • For fabrics prone to powdering
Registered with CA & NYC Fire Marshall
Roscoflamex PC -
Paper & Cardboard Flame Retardant
  • Best for paper and unwaxed cardboard
  • Less likely to yellow paper
  • Perfects for Props artisans and "junk" sets
Registered with CA & NYC Fire Marshall
Roscoflamex WD -
Raw Wood Penetrating Flame Retardant
  • Non-yellowing
  • Raw wood can be painted or stained after treatment
  • ASTM E84 - Class B
Registered with CA Fire Marshall
Roscoflamex PA -
Paint Additive Flame Retardant
  • Compatible with most latex or vinyl paints
  • (test before using)
  • ASTM E84 - Class A
  • ANSI 255 Class 1
Registered with CA & NYC Fire Marshall

Flame Retardants vs Fireproofing

Flame Retardants do not prevent ignition and burning, however successfully treated materials will not sustain a flame on their own. A piece of scenery treated with flame retardant may burn while a source of flame is held in contact with it. However, once the source of flame is removed, properly treated materials will self-extinguish.

Treat & Test

Treated materials should be tested after an 1) initial treatment, 2) after cleaning and 3) periodically as prescribed by the flame retardant manufacturer. To test a material, hold a flame source to the lower edge of a small sample for 10 - 15 seconds, and then remove it. A properly flame retardant material will self-extinguish after a few seconds.

Many flame retardant products are water-soluble and are removed or weakened by laundering and wet conditions. Some are unaffected by dry cleaning, however they should always be retested after cleaning.

Application Methods/ Textiles

Immersion - The most efficient method of impregnating fibers is to immerse unpainted fabric.

Brushing on - Brushing the flame retardant on is less efficient, but generally successful if done thoroughly. It is sometimes necessary to brush on to both sides of the fabric.

Spraying on - Spraying on is also less efficient, but generally successful if done thoroughly and if before and after weighing of the fabric is done to determine that an adequate quantity of the retardant has been absorbed. A substantial portion of sprayed retardant is wasted as it falls to the floor.


Application of a flame retardant may alter the characteristics of some fabrics. See the manufacturer's notes for more information. Some fabrics may contain starch added by the manufacturer and will require laundering and drying prior to treatment.

Application Methods/ Hard Scenery

Penetration - Retardant is applied to a material that will allow adequate penetration. This is usually only applicable where immersion is possible.

Coating - Retardant is applied as a protective coating by brush, roller or sprayer. The coating must be complete and meet manufacturers thickness requirements.


Local regulations regarding fire safety and flame retardants vary widely. You should always check and understand the regulations applicable to your location.

To insure your safety and the successful application of the product, read and follow the manufacturer's instructions.

More Information

You can get more information about Flame Retardant standards and testing by visiting the ANSI (American National Standards Institute) website - http://www.ansi.org and the NFPA (National Fire Protection Association) website - http://www.nfpa.org

To order Rosco Flamex, or to answer your specific questions regarding flame retardant treatments, call us at 1-800-243-4950.

Most orders for in-stock items, placed before noon, are shipped same-day.

Limelight Productions, Inc.
1-800-243-4950 (toll free)

tel 1-413-243-4950
fax 1-413-243-4993
M-F, 9A-5P (est)

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