Natural stone countertops are porous and can absorb liquids, causing staining or unhygienic conditions. Most manufacturers recommend that granite and other stone countertops be sealed with a penetrating sealer before their first use, and regularly thereafter. These sealants contain fluoropolymers which are made from persistent and highly toxic compounds. 1
Specify countertops that do not need to be sealed after installation, such as engineered stone, cultured marble, or solid surfacing. 2
Avoid products marketed as antimicrobial and claiming or implying a health benefit. 2
Prefer products with full disclosure of content through Health Product Declarations (HPDs) – check the Mindful Materials Library! 2