Mohawk SmartStrand Silk Luxuriant Space 3M17 Residential Carpet
Higher concern carpet with undisclosed stain treatment chemistry.
This nylon carpet has a proprietary stain and soil-resistant treatment. water-repellent coating treatments in carpets have historically used PFAS. Mohawk has no PFAS statement on record and the treatment chemistry is not stated.
The better-graded swap
Daltile
Daltile Flooring
75/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Nylon carpet with stain/soil treatment (proprietary)
Brand disclosure
Vague / clean-washing claims
Lab data
No public lab test
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
What Mohawk SmartStrand Silk Luxuriant Carpet is made of, ingredients and materials
Mohawk SmartStrand Silk is a nylon 6 fiber carpet with a proprietary stain and soil resistance treatment applied during manufacturing. Nylon itself is chemically stable and non-toxic when intact, but the stain treatment formulation is not publicly disclosed, raising questions about what substances are embedded in the fibers. The 'Silk' designation refers to fiber texture, not content. Heat and mechanical wear can degrade both the nylon polymer and the treatment layer over the carpet's lifetime.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Vague safety claims only
Uses vague language ("eco-friendly", "clean") without a specific PFAS statement.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
Undisclosed stain treatment composition (likely fluorochemicals)
Mohawk does not publicly name the active ingredients in SmartStrand's soil-resist coating. Industry practice and PFAS prevalence in legacy carpet treatments suggest fluorochemicals are probable, but Mohawk's silence prevents confirmation. This compounds the separate PFAS grade of 'poor' already assigned.
Formaldehyde / VOCs
Nylon carpet backing, latex adhesives, and treatment resins can off-gas formaldehyde and other VOCs, especially in the first 48-72 hours post-installation. Mohawk does not publish formaldehyde test results for this specific SKU, so risk level is inferred from material class rather than measured data.
Source, ATSDR ↗Flame retardants
Residential carpets often contain flame retardants in backing or treatment layers to meet safety standards, but Mohawk does not disclose which additives are used in SmartStrand Silk. Brominated or chlorinated flame retardants are less likely in modern formulations, but this cannot be verified without testing.
Source, EPA ↗Microparticle and dust accumulation from fiber shedding and treatment degradation
All nylon carpets shed microscopic fibers over time, and aged stain treatment coatings can fragment into dust particles. This is inherent to the product class and manageable through regular vacuuming with HEPA filters, but not eliminable.
What’s reassuring
Lead
No recalls or testing data link Mohawk SmartStrand to lead, cadmium, or other heavy metals in dyes. Modern carpet dyes are subject to supplier oversight, but independent verification for this product is not publicly available.
Source, ATSDR ↗How is this PFAS grade calculated?
The brand's record and disclosure
Mohawk Industries is one of the largest carpet manufacturers but has a mixed transparency record. The company does not openly disclose whether its stain treatments contain PFAS, fluorochemicals, or other restricted substances in product specifications or safety documentation. Mohawk has pursued some sustainability certifications (like Cradle to Cradle) but these do not necessarily exclude legacy fluorochemical treatments. No major recalls or substantiated health complaints specific to this product line are on record, but the opacity around treatment chemistry is a red flag for informed buyers.
How it compares in its category
Most residential nylon carpets include factory-applied stain treatments; SmartStrand is mid-to-premium tier and competes with brands like Shaw and Stainmaster, which have similarly vague treatment disclosures. Natural fiber carpets (wool, jute) avoid synthetic treatments but cost significantly more and offer less stain resistance. Carpets explicitly labeled PFAS-free or treated with non-fluorochemical alternatives exist but are less common in mass retail. SmartStrand's trade-off is convenience and affordability versus chemical transparency.
If you buy it
Ensure good ventilation during and for 48-72 hours after installation to minimize off-gassing from adhesives and treatment chemicals. Use a HEPA-filter vacuum weekly to reduce dust and surface particulates; professional extraction cleaning every 12-18 months may help remove accumulated treatment residues. Avoid steam cleaning at temperatures above 212F, which can degrade the nylon and potentially mobilize treatment compounds. Do not install in bedrooms of infants or in homes with immunocompromised members until you are confident about off-gassing cessation.
What is not known about PFAS in this product?
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Mohawk claims it without specifics
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Mohawk SmartStrand Silk Luxuriant Space 3M17 Residential Carpet?
- wool plaid, Axminster weave
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
4 hazards checked on this product, all on its full breakdown.
- polyester fiber, untreated
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
4 hazards checked on this product, all on its full breakdown.
- Ceramic tile, porcelain, or stone composite
- We found no PFAS statement from the brand
- Volatile Organic Compounds (VOCs) from installation adhesives and grout
4 hazards checked on this product, all on its full breakdown.
More carpets & rugs grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.