GlobalTex · Artificial Turf & Grass
COLOURTREE Mastiff Artificial Grass Carpet
Skip until manufacturer discloses coating chemistry and PFAS status.
Artificial grass typically uses waterproofing and stain-resistant coatings on backing materials, which commonly contain PFAS. No public disclosure from GlobalTex on PFAS content or treatment chemicals.
The safe swap
Sportmaster
TrafficMaster Emerald Green Precut Turf Artificial Grass Rug
75/100 safety
Same rubric that flunked this product. The swap earned its C.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
polyethylene grass fibers with unspecified backing/adhesive coatings
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
furniture is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
COLOURTREE Mastiff uses polyethylene (PE) fibers for the grass pile, a common synthetic chosen for durability and UV resistance. The critical unknown is the backing and adhesive system, which typically contains polyurethane, latex, or epoxy resins that may off-gas volatile organic compounds (VOCs) or contain flame retardants. Without manufacturer disclosure of these coatings, chemical composition remains opaque, making full safety assessment impossible.
The brand's record and disclosure
GlobalTex maintains minimal public chemical transparency for this product line. No third-party certifications (e.g., FloorScore, Greenguard) are advertised. The brand does not publicly disclose PFAS testing, backing adhesive chemistry, or flame retardant use, which is atypical for brands competing on safety. This silence on ingredient sourcing is the primary barrier to confident recommendation.
How it compares in its category
Artificial grass carpets as a category carry standard flame retardant and VOC risks; COLOURTREE Mastiff offers no visible differentiation toward lower-emission construction. Premium competitors (e.g., certain FieldTurf or ForeverLawn products) often carry environmental certifications or published backing specifications. Budget artificial grass typically shares these disclosure gaps, so this product sits in a crowded middle tier without competitive safety clarity.
If you buy it
Ventilate heavily during and after installation; off-gassing is most intense in the first 48-72 hours. Keep away from direct heat sources and high-temperature surfaces, as PE fibers can degrade and release particles. Avoid use in enclosed, unventilated spaces (e.g., basement without airflow). Inspect the backing annually for adhesive breakdown or mold growth, especially in humid climates, and replace if degradation is visible.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Flame retardants (unconfirmed)
Synthetic grass backings commonly incorporate brominated or phosphorus-based flame retardants; GlobalTex does not disclose whether COLOURTREE Mastiff uses them. If present, they may leach or off-gas, particularly in high-temperature or humid conditions.
VOC off-gassing from adhesives and backing
Polyurethane and epoxy-based backing adhesives are routine in this product class and typically release VOCs during installation and early use. New carpet smell indicates active emissions; no independent testing of this specific product's VOC profile is publicly available.
Backing material degradation and leachables
Artificial grass backings can degrade over 5-10 years, especially in UV-exposed or humid environments, potentially releasing adhesive components or backing particles. Long-term leaching behavior of this product's unspecified adhesive is unknown.
Microplastic shedding
Polyethylene grass fibers shed microplastics over time, particularly under foot traffic or weathering. This is a known concern for artificial grass in general; no brand-specific data on shedding rate is available for COLOURTREE Mastiff.
Mold and bacterial growth in backing (maintenance-dependent)
Moisture retention in backing materials can support mold and bacterial colonies if not properly ventilated or drained. Risk is higher in high-humidity or poorly ventilated indoor installations.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Artificial Turf & Grass
Sportmaster
TrafficMaster Emerald Green Precut Turf Artificial Grass Rug
polypropylene turf backing, polyethylene grass fibers
Lower concern; no known PFAS-prone features, but brand disclosure absent.
⚠Risky category by default
Sportmaster
Multi Sport Turf
synthetic turf (polyethylene/polypropylene fibers, infill material unspecified)
Insufficient disclosure. Synthetic turf infill composition unknown.
⚠Risky category by default
Sportmaster
Artificial Landscaping Turf | 15ft Wide | | Artificial Turf, Synthetic Grass for Landscaping, Garden, Yards, Fields | In
polyethylene or polypropylene synthetic fibers, backing adhesive unspecified
No PFAS disclosure. Synthetic turf backing adhesives often contain PFAS; verify with seller.
⚠Risky category by default
More artificial turf & grass 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.