Technical Data Sheet

White Undercoat

Product Features

White Undercoat is a water ‐ based primer for pro ‐ fessionals and industrial facili es wan ng a fast ‐ drying, easily ‐ sandable, high ‐ build primer. It is for ‐ mulated to spray from the can without having to thin.

Recommended Uses

As a basecoat underneath any interior project with a white or o ff‐ white wood fi nish like White Poly or Brush ‐ able White Enamel. Par cularly e ff ec ve on MDF.

For tannin ‐ blocking, use GF Stain Blocker

Complies w/ the following air quality regula ons:

SCAQMD, CARB, Canada, OTC Phase I & Phase II

Applica on Condi ons: Recommended 70°F and 50% humidity, out of direct sunlight. Varia ons in condi ons and applica on technique can signi fi cantly a ff ect dry mes and coverage. Use GF Accelerator in cool or humid condi ons. Use GF Extender in warm or dry condi ons.

Surface Prep: Always ensure the surface is clean of contaminants and dust. Sanding any surface too smoothly can reduce adhesion and cre ‐ ate applica on issues like orange peel.

Raw Wood: Sand with no fi ner than 220 grit.

Pre ‐ fi nished Wood: Clean using 50/50 mix of denatured alcohol and water with maroon non ‐ woven pad. Sand with fi ne (220 ‐ 320) foam sanding pad or maroon non ‐ woven pad.

Other Substrates: Always test fi rst.

Sanding Between Coats: Using fi ne (220 ‐ 320) foam sanding pad or gray non ‐ woven pad.

System Recommenda ons: Topcoat with GF White Poly or Brushable

White Enamel. For any surface with poten al for tannin/color bleed, prime with GF Stain Blocker.

Force Dry: Allow product to fl ash for 10 minutes at ambient tempera ‐ ture. Using infrared lamps or oven, heat surface to 105°F. Allow to cool before sanding. Allow a minimum of 30 minutes between coats.

Storage & Shelf Life: Above 50°F and below 80°F, out of direct sun ‐ light, ghtly sealed. Finish preservers such as Bloxygen can help pro ‐ long storage life. Best if used within one year of date on can. Uno ‐ pened and properly stored fi nish can conserva vely last up to 5 years.

Disposal: Always dispose of any le over coa ngs in accordance with local laws. Do not pour down the drain.

The informa on and recommenda ons on this sheet are based upon informa on gathered at the me of publica on and do not act as a safety data sheet. For complete safety and product data, consult the product labels and visit www.general

fi nishes.com for complete SDS sheets.

Published March 2020 by General Finishes Corp. East Troy, Wi.

Product Type:

Sheens Available:

Water ‐ based acrylic primer

N/A

Tintable?:

Volume Solids:

Weight Solids:

Rec. Film Thickness:

Coverage:

Viscosity:

Applica on:

Brush:

Roll:

HVLP:

Air ‐ Assist Airless:

Airless:

Dry Time (touch):

Dry Time (recoat):

Cure Time:

Thin With:

Clean Hands w/:

Clean Equipment w/:

Sizes Available:

VOC:

Yes

33%

53%

Wet: 3 ‐ 5 mils

Total Dry (mul ple coats): up to 2.5 mils

Up to 600 sq. . per gallon

Thick (1000 ‐ 2000 cPs)

Recommended for spray applica on only

Synthe c bristle or foam as necessary

Short nap or foam as necessary

1.5 mm—1.8 mm

1400 PSI pump, 40 PSI assist air, .013” p

Fine Finish .015” ‐ .025”

30 minutes

2 hours

21 days @ 70°F, 50% humidity

Water, GF Extender, GF Accelerator

Soap & Water

GF Brush & Gun Cleaner

Gallons, 5 ‐ gallon Pails

Under 100 g/L