Atsko · Outdoor Furniture Cushion Protectants
ATSKO SILICONE WATER-GUARD
Wait. Silicone water guard lacks PFAS transparency.
Atsko's silicone water-guard waterproofs surfaces without ingredient disclosure or PFAS statements. Silicone coatings sometimes incorporate fluorinated additives.
The better-graded swap
Crate and Barrel
20"x20" Soft Textured Indoor/Outdoor Throw Pillow
75/100 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-based water repellent coating
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.
Vague safety claims only
Uses vague language ("eco-friendly", "clean") without a specific PFAS statement.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
Volatile organic compounds (VOCs) from solvent carriers
Silicone water guards require hydrocarbon or alcohol solvents to apply; these off-gas during curing. No specific VOC concentration data is publicly available for this product, but exposure risk is highest in the first 48 hours post-application.
Heavy metals
Silicone polymers may include tin, platinum, or other catalytic metals in trace amounts; complete ingredient transparency is absent, so residual catalysts cannot be ruled out entirely.
Source, FDA ↗PFAS
Atsko does not provide full ingredient transparency or PFAS certification. Given the brand's historical involvement in water-repellent markets, the absence of a public PFAS commitment raises questions about legacy formulations or contractor manufacturing practices.
Source, ATSDR ↗What’s reassuring
Formaldehyde / VOCs
No evidence that Atsko Silicone Water-Guard contains formaldehyde resins or releasers. Silicone polymers do not require this class of preservative, though undisclosed additives remain possible.
Source, ATSDR ↗Flame retardants
Water-repellent coatings are not flame retardant treatments and typically do not contain brominated or chlorinated flame retardants. No public records suggest Atsko added these to this product.
Source, EPA ↗The full breakdown
What it's made of and why it matters
Atsko Silicone Water-Guard is a silicone-based hydrophobic coating designed to repel water from fabric and leather furniture without creating a plastic film. Silicone polymers themselves are generally considered low-toxicity and inert once cured, unlike some older solvent-based water repellents. However, the product requires solvent carriers (typically hydrocarbons or alcohols) for application, and these volatilize during and after treatment, creating indoor air quality concerns during the application window.
The brand's record and disclosure
Atsko is a long-established outdoor gear treatment manufacturer with a reputation for functional products, but the company has not publicly disclosed full ingredient lists or independent safety certifications for this product. No major recalls or documented health incidents specific to Silicone Water-Guard are on public record. The brand's silence on PFAS content in their water-repellent line is notable given that many competing formulas historically relied on fluorocarbon chains; Atsko's lack of transparency makes it impossible to confirm whether this silicone formula is truly PFAS-free or contains legacy contaminants.
How it compares in its category
Silicone-based repellents occupy a middle ground, lower concern than older wax-solvent blends or heavy fluorocarbon treatments, but less durable than modern Teflon-family coating coatings without PFOA. Most premium furniture brands now use PFAS-free water repellents with full ingredient disclosure. Atsko's lack of certification (e.g., Oeko-Tex, bluesign) and vague marketing around formulation puts it behind transparency leaders, though the silicone base itself is not inherently riskier than siloxane alternatives used by major furniture makers.
If you buy it
Apply in well-ventilated spaces (outdoors or with windows open) and allow 24-48 hours curing time before furniture contact to minimize inhalation of carrier solvents. Do not use on furniture in bedrooms or nurseries where air circulation is poor. Reapplication every 1-2 years may be needed as silicone water repellents degrade under UV and mechanical wear. Keep the product sealed and away from heat sources, as silicone formulas can off-gas VOCs if stored improperly.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Atsko has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Outdoor Furniture Cushion Protectants
Acadia Outdoor 61in Sofa Cushion
Polyester cushion cover; likely acrylic or polyester-blend upholstery
PFAS
Limited concern
Volatile organic compounds (VOCs) from coating or dyes
Limited concern
Coating degradation and microplastic shedding
High concern
Mildew and bacterial growth if moisture trapped
Moderate concern
Lower PFAS concern likely, but West Elm discloses nothing.
⚠Starting grade for this product type
West Elm
Acadia Lounge Chair Cushion
Polyester upholstery cushion cover
Heavy metals
Limited concern
Formaldehyde / VOCs
Limited concern
Microplastic shedding from synthetic fibers
Limited concern
Lower concern cushion, but West Elm provides no PFAS transparency.
⚠Starting grade for this product type
West Elm
Westport Slim Outdoor 68in Sofa Cushion
Polyester/cotton blend cushion cover, no specified water or stain treatment
Formaldehyde / VOCs
Limited concern
Microplastic shedding and degradation
Limited concern
Mold and bacterial growth if waterlogged
High concern
Lower PFAS concern. Standard outdoor cushion with no reported treatments flagging risk.
⚠Starting grade for this product type
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.