Measuring and Mixing: Stir the Urethane Base thoroughly before mixing with Catalyst. Strain if necessary. Careful measuring and thorough stirring are required.
8 parts by volume Urethane Base (Part A) to 1 part by volume Catalyst (Part B)
DO NOT vary the ratio of Urethane Base to Catalyst for any reason!
Wipe the Catalyst container spout THOROUGHLY after pouring to prevent sticking. Close container IMMEDIATELY after pouring.
NOTE: Catalyst has a shelf life. Variable once opened. Not guaranteed.
Thinning: The viscosity should be suitable for brush, roller or spray application. If thinning is desired, use acetone or BRISTOL FINISH Thinner. Use one (1) part by volume or less. In extremely hot weather (90° F/32° C) use our Tropical Reducer to slow the dry time if required.
Application: Six (6) coats required minimum over existing varnish. Six (6) coats required minimum over bare wood. More coats may be required to completely fill the wood grain, to insure that there are no thin spots on the surface. More coats (up to 8) will be required for severe tropical exposure. More coats may be applied if desired for a deeper, “wet look” finish. There are three methods to choose from for application:
Wet-on-Wet Method: Apply the first coat and allow to dry to a firm tack (approximately 1 to 2 hours). Apply the second or next coat without sanding. Continue in this fashion until all coats are applied. When re-coating within short intervals, use light pressure on the brush to avoid brush marks. Use just enough brush pressure to spread the fresh coat out. Re-coat without sanding at any time up to 24 hours after the last coat was applied.
Dry Method: Apply a coat, allow to dry completely, sand, and repeat. Note that when sanding between coats, potentially you must apply 8 coats to end up with 4 coats on the surface.
Practical Method: Apply all but the last coat using the Wet-on-Wet Method described. Don’t stop because of runs, drips or small amounts of dust. Allow to cure (24 to 36 hours) and sand with 220 grit until the surface is smooth and uniformly dull. Use a red ScotchBrite™ pad on sharp corners or edges. Remove sanding dust and wipe with acetone or lacquer thinner, then lightly wipe with a tack rag. Apply the final coat. This method gives a fast build-up and the chance to remove defects with a minimum of labor.
DO NOT over-brush. Lay the coating on with ONE slow stroke, brushing back in the direction of the wet edge. Dip brush 1⁄4” deep, and DO NOT wipe on the rim of the pot. Use the largest brush that will fit the work.
For roller application (large areas), quickly spread the coating on a 2′ x 2′ or so area, and quickly stroke once with a slightly wet brush. This technique will require practice (or 2 persons) if you are not an experienced painter.
Only qualified professional operators that are familiar with 2-part coating systems should perform spraying. Use conventional pressure or HVLP equipment, and settings that are comparable with other 2-part urethane products. Adjust for personal preference.
If a satin or non-gloss finish is desired, either apply a final coat mixed with our Satin Additive, or rub down to the desired appearance level using pumice, ScotchBrite™ pads or fine sandpaper.