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GF's Exterior 450 Stains are low VOC premium quality, exterior pigmented water-based wood stains designed for outdoor projects with vertical surfaces such as garage doors, entrance doors and furniture. Can be applied to wood, MDF, and fiberglass.

Exterior 450 Topcoat a clear-drying low VOC finish suitable for vertical exterior surfaces, such as fences, patio furniture, garage doors and entrance doors. It is not recommended as a deck finish.

We recommend waiting 5-6 days to let the finish cure a bit before putting outdoors. The finish will continue to harden for approximately 20-21 days.

Watch Exterior 450 Topcoat Product Overview video here

General Finishes NEW Exterior 450 White is a water-based exterior-rated pigmented coating for use on vertical surfaces such as outdoor kitchens, entry doors, garage doors, and windows.

Yes, you can. The resin systems for General Finishes Exterior 450 Topcoat and Milk Paint are the same.

Watch Exterior 450 Topcoat product overview video here

Interior wood stains are formulated for interior use and do not contain UV absorbers, mold retardants or HALS (Hindered amine light stabilizers used to protect the polymers from the effects of photo-oxidation.) Waterbased interior stains are much more likely to fail.

You could try this look on an exterior door that will not receive a lot of sun, but be prepared for more maintenance than usual. It is not recommended.

Everyone should note that all exterior finishes need to be maintained at some point - MOTHER NATURE wins the longevity war

Most dyes, such as Trans Tint, can only be mixed with alcohol or water, not mineral spirits. A water-based finish, such as Exterior 450, cannot be used in conjunction with mineral spirits, even with an extended dry time. Solvents do not play well with water-based finishes.

Unfortunately, there is no fix for the peeling finish. You will have to sand the project down, apply an exterior stain and recoat with Exterior 450. Also, advise your customer that no finish will withstand the sun indefinitely. All exterior finishes need recoating and maintenance over time.

Douglas Fir is a difficult wood to stain evenly. A 50|50 mix of your Exterior 450 stain color and Exterior 450 Clear would be a better choice for an exterior conditioner. Blotching may still occur even with this procedure.

After applying the conditioner mix, let it dry 2-3 hours. Allow more time in humid weather. Then a apply the stain color of your choice. Multiple coats will deepen the color.

Do not use General Finishes Gel Stain or any oil based finish outside where this direct exposure to water. If your furniture will be resting under a cover and not exposed to direct water, you may have a successful result. We recommend our Milk Paint or Exterior 450 products instead.

Check out this before and after shot of an adirondack chair restoration by Furniture Medic using General Finishes Exterior

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