Arhaus · Outdoor Furniture Cushion Protectants
Arhaus Water Repellent Outdoor Core Insert
Avoid until Arhaus reveals water-repellent treatment composition.
Arhaus doesn't publicly state what chemicals protect this outdoor insert from water. Water-repellent outdoor products frequently contain PFAS, so ask the brand for complete chemical details.
The better-graded swap
Ethan Allen
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75/100 safety
Same rubric that flunked this product. The swap earned Excellent.
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Material
Water-repellent treated outdoor cushion insert core
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
PFAS
Industry standard for outdoor water repellents is still PFAS-based Teflon-family coating (PFOA, PFOS alternatives). Arhaus' silence on treatment chemistry and lack of PFAS-free certification strongly suggests PFAS use. These compounds persist indefinitely in the environment and accumulate in human blood.
Source, ATSDR ↗Volatile organic compounds (VOC) off-gassing
Polyurethane foam cores and solvent-based water-repellent treatments can release VOCs, especially when new or in warm weather. No certifications or off-gassing limits are published for this product. Off-gassing is typically highest in the first few weeks of use.
Coating degradation and microparticle shedding
Water-repellent coatings on outdoor foams degrade over 1-3 seasons in UV and moisture. As the coating breaks down, particles and the underlying foam material can shed into contact with skin. Arhaus provides no guidance on product lifespan or replacement indicators.
Heavy metals
If the foam core includes flame retardants (common in cushion foams for safety compliance), some formulations historically contained antimony or other heavy metals, though modern foams often use halogen-free alternatives. Arhaus does not specify the flame retardant chemistry.
Source, FDA ↗Mold and bacterial growth if moisture trapped
Outdoor cushions that are water-repellent on the surface but not fully sealed can trap moisture inside the foam, creating conditions for mold and mildew growth. This is a maintenance and hygiene issue more than a direct toxicity hazard, but it limits product lifespan.
The full breakdown
What it's made of and why it matters
This is a cushion insert core treated with a water-repellent finish, most likely a polyurethane foam or polyester blend base. The repellent coating is the critical unknown, Arhaus has not disclosed whether this uses PFAS-based durable water repellents (the industry standard for outdoor durability) or PFAS-free alternatives. Without that information, you cannot assess whether you are bringing persistent forever chemicals into contact with outdoor seating where you or children may sit for hours.
The brand's record and disclosure
Arhaus maintains a luxury positioning but has shown minimal transparency on chemical composition of outdoor textiles and cushion treatments. No published certifications (Oeko-Tex, GOTS, or PFAS-free claims) appear on product documentation. The brand's silence on water-repellent treatment chemistry is a red flag in an era when competitors increasingly disclose or certify PFAS alternatives. This passive approach suggests either PFAS use or lack of investment in alternative chemistry.
How it compares in its category
Outdoor cushion inserts in the premium category typically either use PFAS-based repellents (fast-drying, durable) or increasingly, alternatives like wax coatings or polyurethane systems without fluorine, according to manufacturers. Brands like Sunbrella and some Restoration Hardware products have moved toward disclosed water repellents or PFAS-free certifications. Arhaus' refusal to disclose puts it behind transparency leaders, making direct comparison difficult but suggesting the company has not prioritized this issue.
If you buy it
Do not use indoors or in high-traffic areas where cushion deterioration could release microparticles. Store in a dry location to minimize repeat water exposure that could degrade the repellent coating and increase leaching risk. Replace if the surface becomes sticky, discolored, or peeling, as coating breakdown accelerates chemical release. Before purchase, contact Arhaus directly and ask for the MSDS of the water-repellent treatment; if they refuse or say it's proprietary, that is confirmation to walk away.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Arhaus has made none
Formulations change between production runs, so check the current label. How we grade.
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More outdoor furniture cushion protectants 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.