Kitchenaid · Pizza Stones & Baking Surfaces
Kitchenaid Wall Oven Baking Stone W10862028 20.50 x 15.75 x 1.50 Genuine OEM at Sears PartsDirect
Lower concern. Bare ceramic/stone baking stone, no nonstick coating.
Baking stones are typically uncoated ceramic or cordierite with no surface treatment, making them a lower PFAS concern than nonstick cookware. KitchenAid provides no PFAS disclosure, but the product category itself carries minimal risk.
We flunk more products than we pass. This one earned its grade. How we grade
Material
ceramic or stone, uncoated baking surface
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
cookware is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Thermal shock and fracture
Ceramic and stone materials are prone to cracking if subjected to rapid temperature changes (e.g., moving from oven to wet counter). This is a mechanical rather than chemical hazard but can create sharp edges.
Microparticle shedding
With prolonged use and abrasive cleaning, unglazed ceramic or stone surfaces may shed microscopic particles into food. Risk is minimal with gentle care and appropriate cleaning methods.
What’s reassuring
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
Lead
No glaze or enamel coating is applied to this bare baking stone surface, eliminating the risk of heavy metal leaching from glazes common in some imported ceramics.
Source: ATSDR ↗Aluminum leaching
Ceramic and stone baking stones do not leach aluminum. This hazard applies only to metal bakeware or aluminum-containing composite cookware.
Coating degradation or food contact degradation
No applied coating is present on a bare baking stone, so there is no degradation pathway. Material itself is chemically stable at typical kitchen use temperatures.
The full breakdown
What it's made of and why it matters
This KitchenAid baking stone is ceramic or cordierite-based stone, a fired mineral material without applied coatings or nonstick layers. Bare ceramic and stone are chemically inert at typical baking temperatures (up to 500F) and do not off-gas or leach synthetic chemicals. The material's primary risk profile involves thermal shock (cracking if exposed to rapid temperature swings) rather than chemical release.
The brand's record and disclosure
KitchenAid is owned by Whirlpool and maintains general product safety standards but does not publish detailed material safety disclosures or third-party certifications for baking stones. No recalls or chemical hazard complaints have been established for this specific OEM part. The brand's approach to cookware materials is typical for the appliance category: functional safety over transparency.
How it compares in its category
Uncoated ceramic or stone baking surfaces are among the safest cookware options available. They carry none of the Teflon-type coating (Teflon) fume risks, lead/cadmium glaze concerns, or aluminum leaching issues associated with coated or metal baking vessels. This design represents a low-risk, durable alternative to nonstick or glazed ceramic pans.
If you buy it
Allow the stone to heat gradually to prevent thermal shock cracking; avoid placing cold wet items on hot surfaces. Do not use abrasive scrubbers that may damage the material surface; hand wash with mild soap and water. Replace if the stone develops large cracks or chunks missing. Ceramic and stone baking surfaces typically last many years with proper handling.
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
- Kitchenaid has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Pizza Stones & Baking Surfaces
Nordic Ware
Pizza Stone Set
ceramic-coated stoneware pizza stone
Lead
Limited concern
Ceramic coating degradation and particle release
Limited concern
Thermal shock and structural failure
Moderate concern
Lower PFAS concern, ceramic material inherently avoids fluorochemicals.
⚠Risky category by default
More pizza stones & baking surfaces 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.