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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

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.

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.

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

The hardness properties of a wood finish are formulated around the objectives of use. A hard finish is desirable on projects that get heavy wear such as kitchen cabinets or table tops.

But in other situations, such as an outdoor topcoat, a desired property of the finish is elongation, which allows the topcoat to expand and contract through different extremes of temperature.

Outdoor Oil works by saturation. Once the wood is thoroughly oiled then wait 24-48 hours before applying oil base. Use an exterior oil varnish. Do not use a water-based finish such as Exterior 450 Topcoat.

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

Outdoor Oil works by saturation. Once the wood is thoroughly oiled then wait 24-48 hours before applying oil base. Use an exterior oil varnish. Do not use a water-based finish such as Exterior 450 Topcoat.

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.

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