Commercial Roof Coatings — Flat Roof Restoration for New Jersey Buildings

It depends on what's under the membrane, not just what's on top. A coating makes sense when the existing roof is weathered but sound — roughly the middle third of its life-extension options. If the insulation is wet or the seams have failed broadly, we'll tell you a coating would be wasted money and replacement is the honest answer. Either way you get a photo-documented report and a free written estimate.

Silicone wins on any roof that ponds water — it doesn't soften or wash off under standing water, and it holds up well to UV. Acrylic is the economical choice for roofs that drain properly, but ponding water will degrade it years early. Elastomeric formulations split the difference on flexibility for roofs that move a lot through NJ's freeze-thaw cycles. And sometimes neither is right: if the membrane underneath is failing, no coating chemistry fixes that.

Typically 10–15 additional years on a properly prepped roof at the specified mil thickness. The two things that shorten that: skipping prep (coating over dirty membrane or unrepaired seams) and applying the coating too thin. The upside is coatings are renewable — when the topcoat wears down, a recoat restores the system without starting over.

Yes, both — with the right primer and prep. Aged EPDM takes silicone well once it's power-washed and the seams are reinforced; coating black EPDM white is one of the better energy upgrades available without replacement. TPO is trickier because its surface resists adhesion, so it needs the correct primer and adhesion testing first. Either way the membrane has to be dry and sound underneath before a coating makes sense.

Ponding doesn't automatically rule out a coating, but it dictates the chemistry: silicone only, since acrylic breaks down under standing water. More importantly, we look at why the roof ponds — clogged drains and low spots can often be corrected during prep with added drainage or leveling. If water has been sitting long enough to saturate the insulation below, that section needs to be cut out and replaced before any coating goes down.