Mastrad · Silicone Cutting & Prep Boards
Craft Smart Silicone Craft Mat
Silicone craft mat carries minimal PFAS concern.
Gel-based silicone is inherently PFAS-free without Teflon-family coating coatings, and no safety issues are documented.
The safe swap
Norpro
Norpro Silicone Baking Mat
80/100 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
silicone (gel-based)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Silicone polymer leaching (low-molecular-weight oligomers)
Gel silicone can release trace cyclic oligomers into fatty foods at high heat. For typical craft use (moderate heat, brief contact), exposure is minimal; research on food safety limits is ongoing but current food-contact approvals suggest low real-world risk.
Thermal degradation and off-gassing
If overheated above manufacturer limits, silicone can emit odorous volatile compounds. Craft mats are rarely subject to extreme heat, but exposing to direct flame or oven temperatures above 450F may trigger off-gassing; this is avoidable with proper use.
Bacterial contamination and biofilm growth
Silicone's porous microstructure can harbor bacteria if not dried thoroughly between uses; this is a hygiene concern rather than a chemical hazard. Regular hot-water washing and air-drying mitigate risk effectively.
What’s reassuring
Safe base material
Made from ceramic, mineral, or natural fiber with no PFAS risk.
Heavy metals
No recalls or testing reports document heavy metals in Mastrad silicone mats. Silicone pigmentation is generally regulated; standard silicone food-contact products undergo migration testing, though public results for this specific product are unavailable.
Source: FDA ↗Coating or adhesive contamination from manufacturing
No public information suggests Mastrad uses problematic adhesives or release agents in production of these mats. Gel silicone is molded rather than coated, reducing contamination pathways compared to laminated products.
The full breakdown
What it's made of and why it matters
Craft Smart mats are gel-based silicone, a thermoset polymer that does not rely on chemical coatings to achieve its nonstick properties. Unlike traditional nonstick cookware (which uses Teflon-type coating), silicone's structure itself resists sticking and is inherently stable at moderate temperatures. Gel silicone typically contains no added Teflon-type coating, PFOA, or volatile hardeners that degrade over time, making it chemically simpler than comparable coated alternatives.
The brand's record and disclosure
Mastrad, a French kitchenware manufacturer, maintains minimal public disclosure on material sourcing or chemical testing for this product line. No safety recalls, certifications (FDA, BPA-free statements), or third-party testing results are readily available for the Craft Smart mat. The brand's silence on PFAS is typical of smaller cookware makers but does not indicate presence of concern; absence of marketing claims about safety does not imply hazard.
How it compares in its category
Silicone craft mats occupy a lower-risk niche than traditional aluminum, ceramic-coated, or Teflon-type coating nonstick cookware. They avoid the degradation-over-time problem of enamel or ceramic coatings and eliminate the fume-release risk of overheated Teflon-type coating. However, they are not typically used for high-heat cooking; craft mats are designed for baking, candy-making, and food prep at moderate temperatures where silicone excels.
If you buy it
Keep silicone mats away from sharp utensils and rough handling that can tear the surface, though tears pose no immediate chemical risk. Do not exceed 400-420F (the upper safe range for most gel silicones); check Mastrad's documentation for exact limits. Hand-wash or use dishwasher on low heat; silicone does not require special seasoning or conditioning. Replace if the surface becomes sticky or discolored, which may signal polymer degradation.
What we don’t know
- Basis
- Model estimate, 78% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Mastrad has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Silicone Cutting & Prep Boards
Silikomart
Silicone Grip Mat
silicone rubber grip mat, non-coated
Siloxane leaching (low-molecular-weight oligomers)
Limited concern
Microparticle shedding from grip surface
Limited concern
Mold or bacterial growth in surface texture
Limited concern
Low concern; silicone grip mats rarely contain PFAS.
⚠Risky category by default
Pyrex
Rockler Silicone Project Mat
silicone
Bacterial or mold growth if unmaintained
Limited concern
Migration of manufacturing residue or plasticizers
Limited concern
Silicone project mat carries low concern; no coating risk.
⚠Risky category by default
Pyrex
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borosilicate glass
Thermal shock fracture and cutting hazard
Moderate concern
Lid or handle coating hazards
Limited concern
Minimal concern. Pyrex borosilicate glass is inherently PFAS-free.
⚠Risky category by default
More silicone cutting & prep boards 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.