{"hq_id":"hq-p-hom-000244","name":"Concrete Sealer and Epoxy Garage Floor Coating (VOC, BPA in Epoxy)","category":{"primary":"household","secondary":"renovation","tags":["concrete sealer","epoxy","garage floor","VOC","BPA","polyurea","coating"]},"product_tier":"HOM","overall_risk_level":"moderate","description":"Concrete sealers and garage floor coatings are high-VOC applications in semi-enclosed spaces. Epoxy coatings contain BPA-based BADGE and amine hardener (skin sensitizer). Solvent-based sealers: VOC 400-700 g/L. Water-based epoxy: 50-100 g/L but reduced durability. Polyurea/polyaspartic: low-VOC, fast-cure alternative. Garage ventilation is typically poor — door open is essential.","synthesis":{"derived_risk_level":"low","synthesis_confidence":0.5,"synthesis_method":"compound_composition","context_used":"human_adult","context_source":"product_users","exposure_modifier":1.1,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":1,"compounds_total":1,"synthesis_date":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"sensitive_populations":"DIY applicators (poor ventilation, no PPE), amine-sensitized individuals","overall_risk":"moderate","primary_concerns":["Solvent-based sealers: VOC 400-700 g/L in poorly ventilated garage","Epoxy amine hardener: skin and respiratory sensitizer","BPA/BADGE in epoxy resin","Garage ventilation typically inadequate"],"exposure_routes":"Inhalation (VOC vapors, amine fumes); dermal (epoxy contact)"},"exposure":{"routes":["inhalation","dermal"],"contact_types":["inhalation","skin_prolonged"],"users":["adult"],"duration":"hours","frequency":"event-based","scenarios":["Solvent-based sealer in garage (VOC 400-700 g/L, poor ventilation)","Two-part epoxy mixing (amine hardener skin sensitization)","BPA/BADGE exposure during mixing and application","Polyurea spray: isocyanate during application"],"notes":"Epoxy amine hardener: contact dermatitis in 1-3% of exposed workers, respiratory sensitization. Water-based epoxy: VOC 50-100 g/L, reduced performance in freeze-thaw. Polyurea: 1-day install, UV-stable, but contains isocyanate. DIY kits (Rust-Oleum): same chemical concerns during application."},"consumer_guidance":{"usage_warning":"Garage door FULLY OPEN + exhaust fan during and for 24-48 hours after. Nitrile gloves and safety glasses for all epoxy work. N95 with OV cartridge for solvent-based products. Avoid skin contact with amine hardener (sensitization is permanent).","safer_alternatives":["Water-based epoxy (VOC 50-100 g/L)","Polyaspartic coating (low VOC, 1-day cure)","Penetrating concrete sealer (silane/siloxane — low VOC, no film)","Professional application with proper ventilation"]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA -- California","regulation":"SCAQMD Rule 1113 — Architectural Coatings VOC Limits","citation":"SCAQMD Rule 1113","requirements":"Concrete sealers: 100-700 g/L depending on type. Strictest architectural coating VOC regulation in US.","compliance_status":null,"effective_date":null,"enforcing_agency":"SCAQMD","penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"Uncured epoxy: hazardous waste. Cured: inert, regular waste.","hazardous_waste":true,"expected_lifespan":"5-15_years"},"formulation":{"form":"varies","key_ingredients":[],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000005","compound_name":null,"role":"epoxy_resin_base","typical_concentration":"60-80% of resin component"}],"identifiers":{"common_names":["concrete sealer and epoxy garage floor coating (voc, bpa in epoxy)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"SC Johnson","manufacturer":"SC Johnson","market_position":"mass_market","notable":"Household product conglomerate"},{"brand":"Clorox","manufacturer":"Clorox","market_position":"mass_market","notable":"Household cleaning market leader"},{"brand":"3M","manufacturer":"3M","market_position":"mass_market","notable":"Home safety and maintenance products"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"SCAQMD Rule 1113 — Architectural Coatings VOC Limits","jurisdiction":"USA -- California","citation":"SCAQMD Rule 1113","id":"src_b9f43c26"},{"type":"regulatory","citation":"EFSA. Statement of EFSA on the co-formulant POE-tallowamine. EFSA Journal 2015;13(11):4303.","url":"https://www.efsa.europa.eu/en/efsajournal/pub/4303","date":"2015-11-12","id":"efsa_statement_2015","inherited_from_compound":"hq-c-org-000005"},{"type":"regulatory","citation":"EU Standing Committee on Plants, Animals, Food and Feed. Vote to prohibit POE-tallowamine in glyphosate formulations.","date":"2016-07","effective":"2016-07-22","id":"eu_poea_ban_2016","inherited_from_compound":"hq-c-org-000005"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:29:10.638Z"}}