Flame-resistant uniforms by design prevent ignition when exposed to high heat or open flames. These uniforms can self-extinguish when exposed to fire in some cases. They can also provide thermal insulation, so the severity of a burn is significantly reduced if the uniform does catch fire. Because of these features, flame-resistant fabrics and uniforms are essential to worker safety in numerous fields. That protection isn't guaranteed for the life of a garment, though. This guide covers what FR fabrics are, how to choose them, and the FR clothing washing instructions that keep protection intact.
What Are Flame-Resistant Fabrics & Uniforms?
Flame-resistant fabrics and work uniforms are designed with materials that can do one or more of the following:
- Resist igniting when exposed to high heat or flame.
- Self-extinguish when exposed to heat or flame.
- Provide thermal insulation and reduce the severity of a burn if the uniform catches fire.
To achieve these properties, either the materials themselves are flame- resistant or a chemical has been applied to the uniform. Some fabrics like Nomex are inherently flame- resistant. This difference matters for care: inherent fibers have protection built in, while treated fabrics rely on a chemical finish that improper laundering can weaken. Learn more about flame retardant vs. flame resistant fabrics.
Flame-resistant uniforms may be appropriate for the following jobs and industries:
- Restaurants and hospitality: Any work environment where workers may be exposed to open flames may warrant flame-resistant uniforms.
- Oil industry: Workers in this industry are exposed to high heat and flames on a regular basis, and flash fires present an ongoing risk.
- Fire service professionals: Flame-resistant uniforms are mandatory in this industry for obvious reasons. Such materials have helped save the lives and well-being of countless firefighters.
- Factory or laboratory work: Any profession that involves mixing chemicals or using open flames to weld metals presents a risk of a flame igniting, so flame-resistant uniforms can help protect workers in such environments as well.
- Electrical and utility work: OSHA requires employers to protect workers exposed to electric arcs and flames with clothing that won't ignite or melt.
Types of Flame-Resistant Fabrics & Uniforms
FR uniforms and fabrics come in many types. Some of the most popular include the following:
- Kevlar: This material is used in law enforcement and is inherently resistant to flame ignition. Additionally, Kevlar is dense and strong, making it resistant to high impacts as well.
- Nomex: Nomex is also an inherently flame-resistant material that does not combust. It is commonly used in the firefighting industry and in the design of race car driver uniforms.
- Cotton-based fabrics: Cotton products like Ultrasoft and Indura are treated with flame-resistant chemicals that help prevent combustion from exposure to fire. These materials are useful in occupations that have a low to moderate risk of fire exposure, such as restaurant work. However, they are not adequate for occupations where there is a high risk of flame exposure, such as the fire service industry.
Because treated cotton fabrics depend on a chemical finish, they're the most sensitive to washing mistakes. Inherent fabrics keep their flame resistance for the life of the garment, but contamination and wear can still compromise them. Flame-resistant uniforms also come in a wide range of styles:
- Shirts
- Pants
- Overalls
- Chef’s aprons
- Vests and jackets
- Lab coats
Tips for Selecting Flame-Resistant Fabrics & Uniforms
When selecting a flame-resistant uniform, consider the particular risks and hazards that affect the profession or role in which the garments will be used. The type of material and level of flame resistance needed will vary based on specific occupational demands and risks.
Additionally, comfort is a factor that should not be overlooked. Workers who are uncomfortable on the job will ultimately be less productive and have lower job satisfaction, which can lead to negative impacts on the business.
Consider the following tips and recommendations when choosing a flame-resistant uniform or fabric for your employees:
- Understand the risks and hazards of your work environment. This will play an important role in determining the type of material and level of flame resistance needed.
- Check the relevant industry standards and regulations. At a minimum, you must ensure that your uniforms comply with industry regulations and any applicable laws in your profession.
- Don’t ignore worker comfort. Although meeting industry standards and regulations is a must, don’t forget that your workers will be happier and more productive if they are comfortable. Make sure to choose the best material you can afford because worker comfort will pay dividends in regard to productivity.
- Consider maintenance costs. Although cheaper materials may initially save money, they may also require more maintenance or be more easily damaged. Ensure that you read product reviews and consider the brand quality before purchasing a large quantity of uniforms for your workers. The maintenance associated with low-cost materials may ultimately make them more expensive than paying more up front for a better-quality uniform. A uniform cleaning service can help keep these costs consistent.
Alsco Uniforms offers a wide range of uniforms and uniform maintenance services to meet your needs, including flame-resistant uniforms. Our uniforms are made of materials that naturally resist burning. Reach out to us today to learn more about our offerings and how we can outfit your employees in the FR uniforms they need. We offer uniform rentals, ensuring that your employees’ uniforms are always in good shape.
Why FR clothing loses protection after repeated washing
Washing alone rarely strips flame resistance from a garment. Protection is lost when washing is done incorrectly, when contamination builds up, or when UV exposure and abrasion thin the fabric over time.
Harsh chemicals and fabric softeners
Chlorine bleach, hydrogen peroxide and other oxidizing agents break down FR finishes and weaken fibers. Fabric softeners, starches and soap residue from hard water leave a coating that can burn and mask the garment's flame resistance.
High heat
Very hot water and high dryer heat speed up fiber breakdown and cause shrinkage. A tight garment traps less insulating air, and shortened sleeves or pant legs can leave skin exposed.
Oil, grease and flammable contamination
Oil, fuel and grease left in the fabric can ignite, defeating the purpose of the garment. Home washers often can't fully remove heavy industrial soils, so residue builds up wash after wash.
FR clothing washing instructions
Always follow the manufacturer's care label first. These steps reflect the home laundering guidance in ASTM F2757:
- Wash FR garments separately to prevent flammable lint transfer and cross-contamination.
- Turn garments inside out to reduce surface abrasion.
- Pretreat oil and grease spots with a manufacturer-approved stain remover.
- Use a standard detergent, ideally in soft water. Never add chlorine bleach, hydrogen peroxide, fabric softener or starch.
- Wash at the temperature listed on the care label.
- Tumble dry on low or line dry out of direct sunlight, removing garments promptly to prevent shrinkage.
- Inspect each garment before it goes back into service.
How many times can FR clothing be washed?
No single wash count applies to every garment. Inherent FR fabrics stay flame resistant for life, and many treated fabrics are designed to last their usable life when laundered correctly. Industry standards build durability into testing: NFPA 2112 requires fabrics to meet flame resistance requirements after 100 launderings, and ASTM F1506 requires arc-rated fabrics to pass flammability testing after 25 washes. In practice, a garment's condition, not a wash count, determines when it should be retired. The wrong chemicals, high heat or heavy contamination shorten that lifespan, while controlled laundering helps extend it.
How to inspect FR clothing and know when to retire it
NFPA 70E calls for arc-rated clothing to be inspected before each use, and workers should be trained on what to look for. Remove a garment from service if you find:
- Holes, tears, burns or frayed seams.
- Thin or worn areas at elbows, knees and cuffs.
- Oil, grease or chemical stains that don't wash out.
- Shrinkage that makes the garment too tight or exposes skin.
- A missing or unreadable label showing the FR or arc rating.
- Repairs made with non-FR thread or fabric.
Small tears and seam failures can often be repaired, but only with FR thread and patches that match the garment's protection level, since standard materials create a weak point that can ignite. Garments with large damaged areas or embedded contamination should be replaced.
Industrial vs. home laundering for FR clothing
Home washing machines are built for everyday clothing, not industrial soils. Professional programs follow industrial laundering guidance like ASTM F1449, with controlled processes that are hard to replicate at home.
Factor | Home laundering | Industrial laundering |
|---|---|---|
Oil and grease removal | Often struggles with heavy soils | Formulated for industrial soils |
Water and chemistry | Depends on local water and products on hand | Controlled chemistry and water quality |
Wash and dry heat | Varies by machine | Monitored settings |
Inspection | Relies on each worker | Checked before returning to service |
Repairs and replacement | Handled by the worker or employer | Included in many rental programs |
Keeping FR uniforms protective with professional care
Flame-resistant clothing protects workers only when it's matched to the right hazards and cared for correctly. That means following the care label, avoiding bleach, softeners and high heat, removing flammable contamination and inspecting every garment before it goes back on the job.
Alsco Uniforms offers a wide range of uniforms and uniform maintenance services to meet your needs, including flame-resistant uniforms. Options include the Midweight Excel FR Work Pant, the iQ Series FR Mobility Coverall and other FR and hi-vis clothing. Our uniforms are made of materials that naturally resist burning. We offer uniform rentals, ensuring that your employees’ uniforms are always in good shape. With a rental program, laundering, repairs and inventory management are handled for you on a regular pickup and delivery schedule.
Alsco Uniforms is a global leader in commercial laundry, uniform rental, linen services, and facility services, trusted by businesses in 12 countries. With over a century of experience, we deliver clean, professional, and reliable service that helps your team show up ready, day after day.
Reach out to us today to learn more about our offerings and how we can outfit your employees in the FR uniforms they need.
References
Personal Protective Equipment (PPE): Flame-Resistant (FR) Clothing. (2023). United States Department of Labor.
Policy for Wearing of Flame-Resistant Clothing in Oil and Gas Drilling, Well Servicing/Workover, Well Abandonment, and Production-Related Operations. (November 2011). U.S. Department of the Interior.
Standard Guide for Industrial Laundering of Flame, Thermal, and Arc Resistant Clothing (ASTM F1449). ASTM International.
Standard Guide for Home Laundering Care and Maintenance of Flame, Thermal and Arc Resistant Clothing (ASTM F2757). ASTM International.
Standard Performance Specification for Flame Resistant and Electric Arc Rated Protective Clothing Worn by Workers Exposed to Flames and Electric Arcs (ASTM F1506). (2025). ASTM International.
NFPA 2112: Standard on Flame-Resistant Clothing for Protection of Industrial Personnel Against Short-Duration Thermal Exposures from Fire. National Fire Protection Association.
NFPA 70E: Standard for Electrical Safety in the Workplace. National Fire Protection Association.
Updated October 2026.