General Finishes Enduro Poly Water Based Topcoat Flat - Gallon

Worth it for professional cabinet finishers who own spray equipment and need KCMA-certified performance. The patented flat polymer technology delivers < 10 sheen without traditional matting agents, 100 Koenig hardness, and 450 sq. ft. per gallon coverage. Limited warranty covers product cost only.

Skip it if you don’t have spray equipment. This is spray-only (can be rolled on face-frames with microfiber nap and extender). High Performance can be brushed or sprayed.

The Spray-Only Reality

HVLP requires 1.1-1.3mm tip with medium air cap. Air-assist airless needs 375 psi pump pressure, 20 psi assist, with .011-.013 tip. Straight airless runs .007-.011 fine finish tip. No brush option means no touch-ups without pulling out the gun.

Apply 3 coats at 3-5 mil wet film thickness. Sand between coats once dry (30-45 mins). That’s three separate spray sessions with sanding between — plan your booth time accordingly.

Montana’s low humidity helps here. Add distilled water (5-10% by volume) or GF Extender (10-15%) for longer open time. At 3,000+ feet elevation with 30% humidity, that extender becomes essential to prevent orange peel.

Performance Numbers That Matter

Chemical resistance hits 98 out of 100. Water resistance maxes out at 5/5. Taber wear test shows 35.70mg loss. Koenig hardness tests at 100. Those aren’t marketing numbers — they’re KCMA test results that determine whether cabinet doors survive real kitchens.

Specification	Value
Solids by weight	33%
Solids by volume	30%
VOC content	< 250 g/L
Coverage	450 sq. ft. per gallon
Touch dry	30+ minutes (70°F, 50% RH)
Recoat	1+ hour
Light use	7-10 days
Full cure	21 days

Higher solids content than High Performance (Retail) translates to fewer coats for the same build. Self-crosslinking polyurethane-fortified formula means it keeps getting harder during that 21-day cure window.

The Flat Technology Difference

Patented polymer for flat finish without waxes or matting agents changes the game. Flat Out Flat uses matting agents and has lower solids/durability compared to Enduro’s patented flat polymer. Traditional flattening agents create soft spots in the film. This polymer maintains hardness across the entire surface.

Clear-drying and non-yellowing matters on white cabinets. Enduro-Var II is an oil-modified urethane that ambers like an oil-based finish, whereas Clear Poly is non-yellowing. Pick your product based on whether you want that amber tone or crystal clarity.

FAQ

What surfaces work with this finish? Interior wood surfaces including kitchen cabinets, millwork, furniture, MDF, HDF, and Masonite. Works on raw wood, stained wood, interior cabinetry, trim, doors, and furniture.

Does it work over General Finishes stains and primers? Compatible undercoats include GF Sanding Sealer, GF Wood Stains, and GF Milk Paint (except white).

Any compatibility issues? Do not use over Linseed or Danish Oils unless fully cured. Do not use over bright white paints due to yellowing risk.

How does it compare to competitors’ pro lines? Enduro Pro Series is designed for professional/industrial markets with faster build (2-coat hide) and lower VOC (<200 g/L). Standard Enduro requires three coats but delivers exceptional flatness through that patented polymer.

What about surface prep? Raw wood sand to 220 grit. Pre-finished wood: scuff-clean with 50/50 alcohol/water, sand with 220-320 grit.