How Does Master Flame Work on Fabrics and Textiles?
When it comes to fire safety, fabrics are often the first thing to ignite, and one of the hardest materials to protect. Curtains catch a stray flame, a costume brushes against a pyrotechnic effect, upholstery sits too close to a heat source. In all of these situations, the question is the same: how much time do you have before the fire spreads?
That's exactly what Master Flame is designed to address.
What It Works On
Master Flame is compatible with absorbent, natural-fiber materials; the kinds of textiles most commonly found in homes, venues, and productions. That includes cotton, wool, linen, silk, rayon, canvas, burlap, muslin, and felt, as well as natural-fiber blends used in clothing, costumes, curtains, drapes, upholstery, rugs, and theatrical soft goods. If the material has natural porosity and can take in liquid, it can take in Master Flame.
How It Works
Master Flame doesn't coat the surface of a fabric, it absorbs into it. Once applied, the formula binds within the fibers and creates a protective barrier that resists ignition and slows the spread of flames. Protection that lives inside the material rather than sitting on top of it is more durable, less likely to affect texture or appearance, and far more effective when a real fire event occurs.
What It Won't Work On
Because penetration is key to how Master Flame functions, it will not protect materials that resist absorption. Synthetic fabrics like polyester, nylon, acrylic, spandex, and polypropylene are engineered to repel moisture, which means they'll repel Master Flame just the same. The same goes for foam, vinyl, laminated fabrics, and anything that's been treated with a waterproofing agent.
A simple test: hold the material under water. If it absorbs readily, Master Flame can protect it. If water beads or runs off the surface, it won't.
Tested to NFPA 701 Standards
Master Flame has been independently tested and certified to NFPA 701, the nationally recognized standard for flame propagation of textiles and films. This test is the benchmark used by fire marshals, venue managers, event producers, and building code authorities across the country to determine whether a fabric treatment is actually doing its job.
The NFPA 701 test works by exposing treated fabric specimens to a controlled flame and measuring three things: how long the material continues to burn after the flame source is removed (afterflame), whether it produces flaming drips or debris that could ignite surrounding materials, and how much of the material is consumed. To pass, afterflame must extinguish within 2 seconds, there can be no flaming drip or debris, and average weight loss cannot exceed 40%.
Master Flame didn't just pass, it passed with exceptional results. Across all 10 specimens tested by SGS North America, afterflame was 0 seconds. There was zero flaming drip or debris. Average weight loss came in at just 24.9%, well below the 40% failure threshold, and flames never projected beyond the top of the specimen at any point during testing. Every single specimen passed every single criterion.
That's not a technicality, that's a clean sweep.
A Note on Washing and Reapplication
Master Flame is water-soluble by design, which keeps it safe, non-toxic, and easy to apply. The trade-off is that treated items exposed to washing or heavy moisture will lose their protection over time and will need to be retreated. For anything that gets laundered regularly, building reapplication into your routine is the best approach.
How Long Does It Last in a Fire Event?
One coat of Master Flame delivers up to 30 minutes of flame resistance. In a real fire scenario, 30 minutes is a significant window; enough time to suppress the source, evacuate, or contain the spread before it becomes unmanageable. For high-risk environments or materials in frequent proximity to flame, a second coat can be applied for added peace of mind.
The Bottom Line
If you're working with natural-fiber textiles in a setting where fire is a real concern, whether that's a stage production, a special event, or everyday home fire safety, Master Flame is a straightforward, proven solution. It's not just a claim. It's certified.
