Technical Data Sheet

Exterior 450 Topcoat

Product Features

Exterior 450 topcoat is speci fi cally designed to handle the harsh outdoor elements. It is a so , fl exible fi lm that moves with wood as it expands and contracts. Built ‐ in UV absorbers protect the fi lm from breaking down in sunlight while mildew ‐ cides retard mold and mildew growth.

Recommended Uses

Ver cal exterior surfaces such as cabinets, trim, doors, fences, railings, and furniture. Use over raw wood, stain, or non ‐ white painted surfaces.

For white surfaces, use GF Brushable White Enamel.

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. Ensure any freshly stained surface has dried thoroughly and completely.

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: Can be used with proper priming and/or pain ng.

Always test fi rst.

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

System Recommenda ons: Use without a sealer. At least 3 total coats of fi nish are recommended.

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.

Bu ffi ng: Can be done a er the fi nish has cured using wet/dry auto ‐ mo ve sandpaper. Use GF Finishing Wax or mineral spirits as lubricant.

Do NOT use water.

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

Product Type:

Sheens Available:

Water ‐ based acrylic/urethane blend

Flat (10), Sa n (30),

Semi ‐ Gloss (55), Gloss (85+)

Yes but not recommended 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:

34% (Flat) ‐ 29% (Gloss)

31% ‐ 29%

Wet: 3 ‐ 5 mils

Total Dry (mul ple coats): 2.5

‐ 5 mils

Up to 600 sq. . per gallon

Medium (350 ‐ 450 cPs)

Recommended for spray applica on only

Synthe c bristle or foam as necessary

Short nap or foam as necessary

1.1 mm—1.3 mm

600 PSI pump, 20 PSI assist air, .011” p

Fine Finish .007” ‐ .011”

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 123 g/L