Step 1: Surface Preparation
All wood projects require preparation sanding. If you skip this critical step, your finish may fail.
- Sand with 120-grit sandpaper followed by 150- or 220-grit.
- Remove dust.
- Scuff clean with a Scotch-Brite™ pad or maroon synthetic steel wool & 50:50 mix of denatured alcohol & water.
- Dry 1-2 hours.
- Sand lightly with 220-320-grit foam sanding sponge.
- Remove Dust
Step 2: Priming
CAUTION: General Finishes Enduro White Poly is engineered to adhere well to raw wood, General Finishes White Undercoat and General Finishes Stain Blocker.
When working over raw wood, 2 coats of either Stain Blocker or White Undercoat MUST be applied before applying Enduro White Poly to prevent tannin bleed through and ensure a successful outcome. Both work very well but Stain Blocker will achieve a slightly brighter sustained white.
When working over an existing finish, 2 coats of Stain Blocker MUST be applied before applying Enduro White Poly to prevent tannin bleed through, improve adhesion and ensure a successful outcome.
1. Raw Wood Tannin Bleed-Through is unpredictable; yellowing can appear immediately or months later with seasonal temperature changes. Oak, pine, mahogany, and Douglas fir are particularly prone to bleed-through.
Knots in Wood tend to bleed and are dense, making paint adhesion a challenge. Stain Blocker may improve adhesion and prevent bleed-through.
Existing Finishes Bleed-Through may be caused by wood tannins, previous stains or aniline dyes, surface contamination, and incompatibility between brands. ALWAYS apply 2 coats General Finishes Stain Blocker before applying Enduro White Poly over an existing finish for adhesion and to prevent bleed-through.
Non-Wood Surfaces may be able to take paint if primed first. Primer may improve adhesion over laminate and prevent bleed-through from MDF. Metal requires a primer made specifically for metal. Always test first before completing your entire project.
NOTE: Do not tint or use General Finishes Stain Blocker on projects that will be stored outdoors.
Priming Non-Wood Surfaces for Paint
Always test for adhesion on a hidden area of your project before getting started.
Enduro Pigmented White Poly is engineered for wood surfaces, but may adhere to metal, such as aluminum or steel, if a metal primer is applied first.
1. Clean the surface well.
2. Apply primer.
3. Dry 48-72 hours before painting.
Enduro Pigmented White Poly MAY adhere to laminate with a bonding primer; however, we cannot guarantee it. You may increase your chances of success by abrading the surface.
- Prep: Deep clean, dry thoroughly, sand with 150- then 180-grit sandpaper, and wipe off dust.
- Prime: Apply bonding primer, dry 12+ hours before painting.
Enduro Pigmented White Poly can be applied directly to MDF, but the MDF may cast a brown color if not primed first. Two base coats of white-pigmented shellac-based stain-blocking primer, or Stain Blocker, may prevent bleed-through. Alternatively, one base coat of General Finishes Seagull Gray Milk Paint may block brown tone caused by MDF.
Step 3: How to apply General Finishes Enduro White Poly
CAUTION: Do NOT use any type of clear topcoat over GF White Poly, as it may cause yellowing.
- Work in a well-ventilated area.
- Stir thoroughly to reincorporate solids that have settled to the bottom of the can before and throughout the application process.
- Test for color & adhesion over existing sealed surfaces.
- Thin as desired with distilled water; start with 5%, adding up to 10% by volume.
- Increase open time, if needed, with 10-15% General Finishes Extender if allowed by local regulations. GF Extender will improve flow and leveling and increase open time, which is helpful in dry climates.
- Ready to spray from container. Apply up to 2 coats of primer, plus 2 coats of GF White Poly. Additional coats will not improve durability.
- If a faster build is desired over raw wood, use General Finishes Sanding Sealer for the first coat, followed by 2 coats of White Poly.
- Dry time based on ideal conditions: 70°F/20°C; 50-70% humidity. Tack-free: 5-10 minutes. Ready to sand: 30-45 minutes. Re-coat: 1 hours.
- Finish sand between coats with a fine-grade (220-320) foam sanding pad to improve smoothness and adhesion.
- Remove dust with a vacuum, compressed air, an oil-free tack cloth or a water-dampened rag.
- A topcoat is not required.
Warning: Do not use water-based products with Linseed Oils or Danish Oils.