Wilton · Silicone Cutting & Prep Boards
Westcott Projectmate Silicone Non-Stick Craft Mat
Silicone craft mat carries lower PFAS concern; brand offers no disclosure.
Silicone is inherently PFAS-free. Westcott makes no PFAS claims and the product is not typically treated with water or stain-resistant coatings.
The safe swap
Norpro
Norpro Jumbo Flexible Cutting 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 non-stick surface
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Non-stick, chemistry undisclosed
Advertised as non-stick but coating type is not explained.
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Silicone oligomer leaching
Food-grade silicone can release small silicone chains (oligomers) when heated above recommended limits or mechanically stressed. Westcott mats are designed for craft use, not direct food contact; if used for baking, staying below 400°F and following manufacturer guidance minimizes this risk.
Coating degradation over time
Repeated washing, sharp utensil contact, and UV exposure can degrade silicone surface integrity. Visible tears or persistent odor signals the mat should be replaced to avoid material flaking into crafts or food.
Bacterial growth if stored wet
Any porous or poorly sealed craft mat stored damp can harbor mold or bacteria. Dry this mat completely before storage to prevent microbial colonization, especially if used for food preparation.
What’s reassuring
Lead
No recalls or test reports document heavy metals in pigments used to color Westcott silicone mats. Silicone pigmentation is generally safer than ceramic glaze colorants, but brand does not disclose pigment sourcing.
Source: ATSDR ↗Formaldehyde / VOCs
Silicone formulations do not typically release formaldehyde or high VOCs, unlike some PVC or rubber craft mats. No off-gassing complaints are on record for this product.
Source: ATSDR ↗The full breakdown
What it's made of and why it matters
This product is a silicone non-stick mat, not traditional cookware with ceramic glaze or Teflon-type coating. Silicone is a synthetic polymer with high heat stability and low chemical reactivity, meaning it does not leach lead, cadmium, or aluminum the way ceramic-glazed or metal cookware can. The primary concern with silicone is whether it degrades under heat or mechanical stress, releasing oligomers (small silicone fragments) into food or craft materials, but food-grade silicone mats are designed to resist this below typical use temperatures.
The brand's record and disclosure
Wilton (the parent brand) is a cookware and baking supplies manufacturer with no known major safety recalls for silicone mats. The company does not publish detailed material safety or PFAS disclosure statements for this product category. Wilton has not publicly committed to PFAS-free formulations or third-party testing transparency, but this silence is standard across craft-mat makers rather than a red flag unique to Wilton. No established controversies link Wilton silicone mats to chemical safety failures.
How it compares in its category
Silicone mats occupy a lower-risk position than Teflon-type coating non-stick cookware (which can off-gas fumes if overheated), ceramic-glazed bakeware (which may contain lead in decorative glazes), or stainless steel with unknown coatings. Compared to reusable craft mats made from rubber or PVC, silicone offers better temperature tolerance and lower volatile organic compound (VOC) off-gassing. This product is safer than average for its intended craft and baking use case.
If you buy it
Store and use this mat below 400°F to avoid potential silicone degradation and oligomer shedding; verify the specific heat rating on the product label. Wash it by hand or in the dishwasher after each use to remove dried residue, which can trap bacteria. Replace the mat if you notice discoloration, tears, or a persistent chemical smell, which may signal polymer breakdown. Keep it away from sharp metal tools that can puncture the surface and accelerate wear.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Wilton 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
1, Size: 29cm/11.42 x 26cm/10.24 (Approx.)40cm/15.75 x 30cm/11.81 (Approx.)50cm/19.69 x 40cm/15.75 (Approx.)60cm/23.62 x
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.