For Exterior Applications:
Cleaning: Pressure wash once a year (up to 3000 PSI) is recommended to ensure minimal accumulation of sediment and moss. If moss is growing, pressure wash more often or use moss killers or bleach. Moss prevention sprays (100% biodegradable) also work well, i.e. ‘Spray and Forget’ from ACE Hardware or ‘Wet & Forget” from Costco.
Re-coat with Epoxy: Depending on the sun exposure and wear and tear, a re-coat of epoxy is recommended every 2 to 5 years. That will bring back the shine and color of the stone and provides also an extra bonding of the stone. The homeowner can do this himself (buy the epoxy from us and apply it with a paintroller) or we would do this at minimal cost.
See our instructional video:
Epoxy Stone Northwest Maintenance, Re-coat and Repair Instructions part 1 Utube.flv
Epoxy Stone Northwest Maintenance, Re-coat and Repair Instructions part 2 Utube.flv - YouTube