How to Clean FR Coveralls: A Guide for Oil Sands Workers

Why FR Coveralls Are Different From Regular Workwear

FR coveralls are not just heavy-duty work clothes. They are personal protective equipment engineered to self-extinguish when exposed to flame or arc flash. The protection comes either from the fiber itself (inherent-FR, like Nomex aramid) or from a chemical treatment applied to the fabric surface (treated-FR, like most cotton-nylon blends).

Both types have vulnerabilities. Treated-FR fabrics carry their protection on the surface of the fiber — if you use bleach, you chemically destroy those flame-retardant compounds. Inherent-FR fabrics like Nomex are more resilient, but bleach degrades the molecular structure of the aramid fiber over repeated washings. Neither type can have its FR protection restored once it is lost.

This is why the care label is a safety instruction, not a suggestion.

The Three Things That Destroy FR Protection

1. Bleach

Chlorine bleach and oxidizing bleaches permanently break down flame-retardant chemistry in treated-FR fabrics. For inherent-FR fabrics like Nomex, repeated bleach exposure degrades the fiber's tensile strength and FR properties. There is no way to restore protection once it is destroyed. If someone told you to soak your coveralls in bleach to get them clean — that is incorrect advice that turns your PPE into a hazard.

2. Fabric Softener and Dryer Sheets

Fabric softener works by depositing a thin, waxy coating on fibers. That coating makes fabric feel softer. It also makes it more flammable. A fabric softener residue on an FR coverall can prevent the fabric from self-extinguishing and introduce a fire hazard into what is supposed to be protective clothing. Dryer sheets function the same way. Both are prohibited by virtually every FR garment manufacturer's care instructions.

3. Wrong Water Temperature or Drying Temperature

FR garments often have specific water temperature limits. Exceeding them — particularly for treated-FR fabrics — can accelerate the degradation of the FR chemistry or cause dimensional changes that affect how the coverall fits and moves. High heat from residential dryers is also a concern; commercial equipment with controlled temperature settings handles this more consistently.

Can You Wash FR Coveralls at Home?

Technically, a home wash in cold or warm water with no bleach and no softener, using a standard non-biological detergent, is better than using bleach. But home laundering has limitations:

• Detergent residue: Consumer detergents may leave residue that is not tested for compatibility with FR chemistry. Over many washes, accumulation can occur.
• Cross-contamination: Washing FR coveralls with regular laundry — particularly items that have been treated with fabric softener — can transfer softener residue.
• Temperature consistency: Home water heaters vary. Consistent temperature control is easier with commercial equipment.
• No inspection: Most workers do not inspect seams, closures, reflective tape, and fabric condition after every wash. At a professional cleaner, inspection is part of the process.

Many oil sands employers specify that FR garments must be cleaned by a professional laundry service as part of their PPE program. Alberta's OHS Code Part 18 sets requirements for protective clothing in hazardous workplaces. If your employer has this requirement, home laundering may not be compliant regardless of technique.

What Professional FR Cleaning Looks Like

At Sunshine Dry Cleaners, every FR coverall goes through the following:

1. Condition inspection on arrival. We check seams, zippers, reflective tape, and fabric integrity before the garment enters the cleaning process. If we see damage that should be flagged before cleaning — we flag it.
2. Care label review. We read the care label for every garment. Nomex, Westex, Bulwark, and Carhartt FR each have specific requirements. We apply the appropriate water temperature and handling for the fabric type.
3. FR-compatible pre-treatment. Soil pre-treatment uses spotters that are compatible with FR fabric. No bleach at any step.
4. Commercial wash with FR-approved detergent. We use commercial detergents formulated for FR garment maintenance — not consumer detergents and not softener.
5. Controlled drying. Temperature-controlled drying appropriate for the fabric type.
6. Final inspection. After cleaning, we verify zipper and closure function, check reflective tape condition, and confirm no damage was introduced. We will tell you if something needs attention before the coverall goes back into service.

When to Retire an FR Coverall

Cleaning does not extend a coverall's service life indefinitely. Retire a garment when you observe:

• Holes, rips, or thinning areas in the protective fabric
• Fraying or separating seams, particularly at stress points
• Missing or peeling reflective tape (tape is part of the safety system)
• Zippers or closures that no longer function correctly
• Suspected chemical contamination with fuel, oil, or solvents that cannot be fully removed
• Any failure in your employer's PPE inspection criteria

Minor fading is normal and does not indicate loss of FR protection in inherent-FR fabrics. But if a treated-FR garment is heavily faded, it may have been through enough degradation cycles that FR protection warrants verification. When in doubt, consult your safety officer.

FR Brands We Clean in Fort McMurray

We handle all major FR and arc-rated workwear brands used on Suncor, Syncrude, CNRL, Imperial Oil, MEG Energy, and Cenovus sites: Nomex (DuPont), Westex UltraSoft and FR-7A, Bulwark, Carhartt FR, Tyndale, National Safety Apparel (NSA), Lakeland Pyrolon, and Portwest FR. Drop off at our Eagle Ridge location on Loutit Rd — no appointment needed. Standard turnaround is 2–3 business days.