Master Flame® Long-Term Flame Retardant
Protect wood, fabric, drywall, and other absorbent materials with Master Flame®, a Class A flame retardant designed to slow flame spread and enhance your home's wildfire protection. Professionally applied by Embershield, it adds another layer of defense to your complete home hardening strategy.
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Build a Stronger Defense Against Wildfires
Every layer of protection plays an important role in reducing wildfire risks. Let our certified home hardening experts assess your property and create a customized protection plan using proven Class A fire-rated solutions.
Master Flame - Class "A" Fire Retardant
Master Flame is an environmentally friendly, universal Class “A” Flame Retardant intended for use on woods, fabrics, and other absorbent materials. When properly applied, Master Flame creates a thermal insulation barrier that prevents dangerous flames from spreading and inhibits the development of toxic smoke.
NOTE: Master Flame is not compatible with waterproof materials or polymer materials as Master Flame is not able to penetrate the cellular structure.

Common Questions
Frequently Asked Questions
What is Master Flame®?
Master Flame® is a Class A, water-based flame retardant that penetrates absorbent materials to help reduce flame spread and inhibit toxic smoke development.
What materials can Master Flame® be applied to?
It is designed for absorbent materials such as wood, drywall, fabrics, hay, burlap, and untreated lumber. It is not intended for waterproof or polymer-based materials.
Does Master Flame® prevent fires?
No. Master Flame® is designed to slow flame spread and improve fire resistance, providing valuable time during a fire event. It should be used as one part of a complete home hardening strategy.
Is Master Flame® environmentally friendly?
Yes. Master Flame® features a water-based, non-toxic formula that is environmentally friendly when used as directed.
Why choose professional application?
Professional application helps ensure proper coverage, material compatibility, and optimal performance for long-lasting fire protection.
Why Choose Master Flame®?
Master Flame® is a water-based, environmentally friendly Class A flame retardant that penetrates absorbent materials to help reduce flame spread and smoke development. It's an effective solution for strengthening your home's wildfire resilience.
Class A Rated
Meets recognized fire safety standards to help reduce flame spread on treated surfaces.
Deep Protection
Penetrates absorbent materials to provide long-lasting fire resistance and dependable protection.
Non-Toxic Formula
Water-based, eco-friendly formula designed for safe application on compatible materials.
Easy Application
Professionally applied for even coverage and dependable long-term performance.
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Who We Protect
Protecting Homes & Properties Across California
From residential homes to commercial properties, Embershield delivers customized fire hardening solutions designed to reduce wildfire risks and improve long-term property resilience.
Residential Homes
Protect your home with customized fire hardening solutions that improve safety, reduce wildfire risks, and strengthen overall resilience.
Mountain Homes
Safeguard remote homes with fire-resistant upgrades designed to withstand ember attacks and reduce wildfire-related damage.
HOA Communities
Support safer neighborhoods with community-focused wildfire protection strategies and comprehensive home hardening solutions.
Luxury Homes
Preserve premium properties using advanced fire protection upgrades that enhance safety without compromising appearance.
Rental Properties
Protect your investment with durable fire hardening improvements that help reduce risks and improve long-term property value.
Commercial Buildings
Strengthen commercial properties with reliable wildfire protection solutions that enhance safety and reduce potential damage.
Strengthen Your Home with Proven Flame Protection
Add another layer of wildfire defense with professionally applied Master Flame® Long-Term Flame Retardant. Contact Embershield today to learn how this Class A flame retardant can help improve your home's fire resistance as part of a complete home hardening plan.

