Why EPDM Rubber Surfaces Show Whitening?How FieldsMaster Resolve This Problem
FieldsMaster EPDM granules are premium synthetic rubber particles known for UV resistance, durability, vibrant colors, and environmental safety. They are widely used in running tracks, playground surfaces, sports courts, and swimming pool/water play areas.
Despite high quality, whitening or discoloration can occur due to environmental exposure, construction conditions, or improper maintenance. Understanding EPDM granules whitening causes and solutions ensures long-lasting aesthetics and performance.
Explore more about our products: EPDM Granules| PU binder/Binder.
How to Identify Whitening Causes
Whitening on FieldsMaster EPDM granules can be classified as:
1.Removable whitening: Filler migration or cement efflorescence.
2.Permanent whitening: Rubber aging, color fading, or chlorine/oxidation in water areas.
3.Water-soluble whitening: Sea salt crystallization or detergent residue.
4.Construction-period whitening: Polyurethane binder reaction with moisture.
Consult FieldsMaster technical support for uncertain cases.
Causes and Professional Solutions
Filler Migration & Cement Efflorescence：Migration of fillers or alkaline substances from concrete.
Solutions:
•Use FieldsMaster EPDM granules for sports tracks.
•Apply sealants/topcoats.
•stall EPDM at least one month after concrete curing or acid wash concrete (8%-10% oxalic/hydrochloric acid).
•Improve waterproofing; apply primer if needed.
•Clean efflorescence with specialized detergent.
2.Rubber Aging ：UV and oxidation break molecular chains, causing hardening.
Solutions:
•Use UV resistant FieldsMaster EPDM granules.
•Apply sealants/topcoats for longevity.
3.Color Fading：Caused by insufficient UV stabilizers or low-quality pigments.
Solutions:
•Use FieldsMaster EPDM playground surface granules with high lightfastness.
•Restore with topcoat applications.
4.Chlorine/Oxidation in Water Areas：Continuous contact with chlorinated/oxidizing water.
Solutions:
•Use proper drainage; avoid long-term immersion.
•Use chlorine-resistant PU binder
•with FieldsMaster EPDM granules for swimming pool areas.
•Rinse after use; minor damage: topcoat, major: resurfacing.
5.Sea Salt & Detergent ：High-salt or detergent exposure causes white residues.
Solutions:
•Rinse with fresh water; clean with neutral detergent.
6.Polyurethane Moisture Reaction：PU binder reacts with water during construction.
Solutions:
•Control environment, grind, and recoat if needed.
Preventive Measures
•Use UV resistant FieldsMaster EPDM granules with anti-aging additives.
•Employ high-quality PU binders.
•Inspect and clean regularly; see Maintenance & Cleaning Guide.
•Apply protective topcoats for long-lasting color.
Application Areas
Why Choose FieldsMaster EPDM Granules
•100% virgin rubber, no recycled material
•Automotive-grade pigments, UV resistant
•20+ standard colors, customizable
•Technical support for installation and maintenance
•Integrated supply: EPDM granules + PU binder
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