Enduro White Undercoat

General Finishes White Undercoat is similar to General Finishes Sanding Sealer with the addition of white colorant to provide a primer undercoat for white/off-white wood finishes. The high solids facilitate a fast film build and sand easily. Use as a basecoat for pigmented acrylic finishes. It dries tack-free in 10-20 minutes. Particularly effective on MDF.

 

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Enduro White Undercoat

Instructions

Step 1: Preparation

All wood projects require preparation sanding, and all existing finishes require prep cleaning and sanding. If you skip this critical step, your finish may fail.

Preparation for Raw Wood
See our video: How to Prep Sand Raw Wood

  1. Sanding Schedule: 120-grit followed by 150- or 220-grit sandpaper.
  2. Remove dust with a water-dampened rag or oil-free tack cloth.
  3. Let dry completely before applying GF product.
  4. Do not over-sand with fine-grit sandpapers; this will close and seal the wood grain, preventing ideal color absorption.
  5. Do NOT use steel wool with water-based finishes; the particles will get trapped in the finish and rust.

Step 2: How To Apply General Finishes Enduro White Undercoat

 

General Finishes White Undercoat should only be applied over raw wood and MDF as an undercoat for White Poly and light-colored paints. It acts as a physical barrier rather than a chemical barrier. For woods that exhibit tannin bleed-through, we recommend General Finishes Stain Blocker

Enduro White Undercoat Application Steps 

  1. Stir General Finishes Enduro White Undercoat to reincorporate solids that have settled to the bottom of the can before and throughout the application process.
  2. If desired, thin with 10-15% distilled water or General Finishes Extender. Extender will improve flow and leveling and increase open time, which is helpful in dry climates. 
  3. Apply 1-2 coats, depending on the substrate, the amount applied, and the application method. If you apply 1 light coat you can sand through, add another coat. If you apply 1 solid first coat and sand lightly, then you only need one.
    • Spray application: Before spraying, strain through a medium-mesh filter. HVLP: 1.5mm-1.8mm spray tip, medium air cap. Verify tip sizes with your equipment supplier. See our general guide for spray tip sizes. Keep your gun at a 90* angle, 6-8" from the surface. On large, flat areas, use wet, even patterns 6-8" wide. For narrow surfaces, reduce the fan pattern to 2-3" wide to reduce overspray. Overlap each pass 25% to conceal lines. Wear a full filter respirator (NIOSH/MSHA approved) and work in a ventilated space. Read here for more information on spraying techniques.
    • Face frames on cabinets: Enduro professional products are engineered to be spray-only but can be applied successfully to cabinet face frames or edges with a brush, pad or small cabinet specific roller such as Whizz Velour brand. Larger areas may not level with hand application.
  4. If a faster build is desired over raw wood, use General Finishes Sanding Sealer for the first coat, followed by 2 coats of High Performance Topcoat.
  5. Dry 2+ hours between coats in ideal conditions: 70*F/20*C; 50-70% humidity. Inadequate dry time is one of the top reasons for product failure. You can tell if a water-based finish is dry if it forms a powder when lightly sanded with a fine-grade (220-320) foam sanding pad or 400-grit sandpaper. If in doubt, wait longer. Increase dry time if:
    • Humidity is over 80%
    • 3+ coats are applied
    • Thick coats are applied
    • Applying over an existing sealed finish
    • Layering General Finishes water- and oil-based products:
      • Water over oil: Let oil-based products dry 72+hr before applying water-based products
      • Oil over water: Let water-based products dry 24+hr before applying oil-based products
    • To accelerate dry time in humid conditions, add General Finishes Accelerator and work in a space with good ventilation and air movement. If you decide to re-coat before the recommended time, test dryness.
  6. Finish sand between coats with a fine-grade (220-320) foam sanding pad or 400-grit sandpaper to improve smoothness and adhesion.
  7. Remove dust with a vacuum, oil-free tack cloth or clean water-dampened rag before re-coating.
  8. Seal White Undercoat with topcoat to equal 4 total coats. If 1 coat of White Undercoat is applied, apply 3 coats topcoat over it. If 2 coats White Undercoat are applied, apply 2 coats topcoat. One coat White Undercoat sealed with 3 coats topcoat is recommended for durability. It's better to have more topcoat than undercoat.

Cure Time
Water-based finishes cure and harden for full use after 21 days in ideal conditions. Avoid placing heavy objects on surfaces that have not completely cured. Treat gently, and do not clean with commercial products during the curing period.

Cleanup of Water Based Products

Application tools and materials containing water-based products can be cleaned with soap and water immediately after use.

Product Spills
Spills may be able to be removed from fabric and carpet if cleaned immediately with soap and water.

Storage of Water Based Products

Life of Product
Water-based products do not last forever, even when unopened. General Finishes products are best used within 1 year of the manufacture date listed on the bottom of the can. The life of the product may be extended with proper care and storage.

Settling
Gravity can cause some solids to settle on the bottom of the can and slight separation on the top. This is normal. If working with older paint, use paint mixing attachment on a drill. If the solids dissolve and clumps smooth out after mixing from the bottom, the product is in good condition for use.

Storage Tips
See video tutorial: Tips on Storing Leftover Finishes
Water-based finishes crystalize and form a skin due to evaporation when the air-tight seal on a can is broken at first use. The following best practices will increase the life of your product:

  1. Pry open sealed lids with a paint can opener by hooking under the lid's rolled edge. The use of a screwdriver can disfigure the rim and lid, impairing a complete seal. 
  2. Keep lid closed while working. Pour what you will use into a bowl, paper cup, or plate, and close can lid as you work.
  3. Clean the chime of the can thoroughly with a paper towel before closing to create a complete seal. Paint in the chime can be minimized by using a pouring lid, such as Fitsall. Avoid wiping used brushes on the lid.
  4. Pound the lid in place using a rubber mallet to avoid distorting the chime or lid. Dents in the lid from direct contact with a hammer can impair a complete seal. Alternatively, place a flat piece of wood over can lid and firmly pound shut.
  5. Store in moderate temperatures. Avoid temperatures below 50*F/10*C or above 80*F/26*C. Frozen and heat-damaged product cannot be revitalized. Temperature-controlled spaces, such as a basement, are ideal for storage. Do not store product in an attic, garage, in direct sunlight, or next to something warm like a water heater or furnace.
  6. Store can upside down to create a liquid seal, minimize evaporation and reduce the chance of crystallization. Decant remaining product from the can before stirring. 
  7. Decant leftovers to a smaller container when the finish is almost used up. Alternative storage containers for water-based products are plastic FIFO bottles or glass bottles. Do not fill metal-lidded containers completely to prevent them from rusting.

The following water-based product mixtures can be stored:

  1. Product thinned with up to 15% General Finishes Extender or General Finishes Accelerator can be stored, with the exception of thinned General Finishes Water Based Wood Stain.
  2. Mixtures involving colors & sheens within the same product line, such as:
    • High Performance Satin + High Performance Gloss
    • Snow White Milk Paint + Coastal Blue Milk Paint
    • Amber Dye Stain + Merlot Dye Stain

The following product mixtures should NOT be stored:

  • Any water based product with thinned tap water; water often contains bacteria that will adversely affect stored paint.
  • Topcoat + Stain or Paint
  • Milk Paint + Chalk Style Paint
  • Water Based Wood Stain + Dye Stain

Furniture Care and Maintenance

Cure First
You have just finished applying a fine furniture finish. Allow 21 days for the finish to cure before cleaning.

Regular Cleaning and Maintenance

  • Remove dust with a water-dampened cloth. Dust can build up over time and may scratch or dull finishes if not removed regularly. 
  • Remove fingerprints, cooking fumes and smoking residue with mild soap and water. These contaminants will not harm the finish, but they accumulate on surfaces and dull the original luster. 
  • As with all fine furniture finishes, avoid using furniture polish, cleaners or dusting sprays that contain silicone, alcohol, ammonia and anything acidic. Exception: We have successfully cleaned with Clorox wipes.
  • Clean up water, alcohol and food spills in a timely manner and use placemats & coasters to protect the finish.
  • Future finishes or touch-ups may not adhere properly or perform as desired over a contaminated surface. Some contaminants, such as silicone, seep through finish into the wood and often cannot be removed.
  • Avoid excessive exposure to direct sunlight, high temperatures or high humidity. These can damage furniture and finishes.

Warnings and Warranties

Limited Warranty
General Finishes products must be tested to your complete satisfaction before using, including compatibility with other manufacturers products. General Finishes will be responsible only for the cost of our products and will not be responsible for any costs such as labor, damage, or replacement costs.

Contamination and Compatibility
Our finishes are engineered as a system and are compatible with each other. General Finishes cannot guarantee an ideal refinish when applying our products on top of or combined with another company's products or over surfaces that have been in contact with waxes, polishes or sprays containing contaminants such as silicone. Test for adherence and aesthetics before beginning. 

Warning
If you scrape, sand, or remove old paint, you may release lead dust. LEAD IS TOXIC. EXPOSURE TO LEAD DUST CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE, ESPECIALLY IN CHILDREN. PREGNANT WOMEN SHOULD ALSO AVOID EXPOSURE. Wear a NIOSH-approved respirator to control lead exposure. Clean up carefully with a HEPA vacuum and a wet mop. Before you start, find out how to protect yourself and your family by contacting the National Lead Information Hotline at 1-800-424-LEAD or log onto www.epa.gov/lead. WARNING: This product contains a chemical known to the State of California to cause cancer and birth defects. Do not swallow; first aid: drink water to dilute product. May cause eye and skin irritation; first aid: flush eyes thoroughly with water.

Warning
This product contains a chemical known to the State Of California to cause cancer and birth defects. Do not swallow; first aid: drink water to dilute product. May cause eye or skin irritation; first aid: flush eyes thoroughly with water.

Specifications

Basic Features
Product Colors White
Base Type Water
Ambering No
Interior or Exterior Interior only
Type Acrylic Primer
Application
Coats 1 - 2 coats
Application Method Spray
Brushable No
Usable over existing finishes No
Sprayable Yes
Spray Tip Sizes HVLP 1.5mm-1.8mm
Topcoat Required Yes
Dry Time
Dry Time - Touch 30+ min.
Dry Time - Recoat 2+ hr
Dry Time - Light Use 7-10 days
Dry Time - Cure 21 days
Contents
Can Sizes Gallons, 5 Gallon pails, 55 Gallon drums
Coverage 150 sq. ft/quart, 600 sq. ft/gal
Technical Data
Viscosity Thick
Viscosity (cPs) 1000-2000
Weight Solids 53%
VOC <115 g/L