Experimenter by necessity (Jury still out)
West Marine not stocking paint made me color out of the lines even though I wanted to be a good boy. Still too soon to see long term results.In painting the non skid on my 79 H33 recently, I like David Underwood, basically followed (or tried to follow) the recommendations of Don Casey. My intention was to sand the old non skid, lay down Interlux epoxy primer, cover with sand, and after vacuuming up the loose sand, encapsulate the sand in a couple coats of Interlux Brightside one part marine paint with a flattener added. Couple of things went wrong. First, I misfigured quantities grossly. Brightside is listed I believe at about 400 sq ft/gal so I figured a couple of quarts were plenty. Turns out when putting on over sand, paint probably covers less than 100 sq ft/gal. In working out procedures, I go through the entire sequence with all the hinged hatch covers on the boat. Color is a light gray made by mixing a quart of Brightside white and a quart of one of their Brightside grays. So they serve as a baseline of comparison with everything done by the book. With a deadline for splashing staring me in the face, West Marine doesn't have the additional Interlux 404 primer or Interlux Brightside and I can't locate another source and I can't wait for the delivery schedule inherent with the labeled "hazardous material". Brightside is billed as a single part polyurethane paint so after searching around I end up with two gallons of Sherwin Williams very best Polyurethane Floor enamel, one of white and one of gray which with a little experimentation, I mix to the same color as the original brightside mixture. I chose the Sherwin Williams because: 1.It is a floor enamel and like Don Bodeman, it seemed to me that the environment of a boat deck is not that different from the environment of any outdoor painted floor surface. 2. It is labeled as a polyurethane enamel, same term used with the brightside paint so I hoped for no compatibility issues with the 404 primer. Now I ran out of the epoxy 404 primer before I could finish the starboard side deck and again in searching around, I locate at Lowes a two part Rustoleum Epoxy-shield coating labeled as a multipurpose coating for outdoor surfaces. I used this in stead of the 404 epoxy primer for part of the starboard side deck. So on my newly painted deck I have the following combinations:1. Deck hatches primed with Interlux 404 with sand sprinkled in then vacuumed off, painted two coats with Interlux Brightside. (completely within the lines)2. About half of starboard side deck primed with Rustoleum Epoxy-Shield with sand sprinkled into this material and then painted two coats Sherwin Williams Polyurethane floor enamel. (completely out of the lines) 3. All the rest of the non skid: Primed with Interlux 404, sprinkled with sand, Painted with two coats Sherwin Williams Polyurethane. (half in the lines)Right now you can't tell the difference. I'll monitor it and report in about a year. A couple of comments on the experience.The sand makes a great non skid surface. It is truly non skid and looks good too. I ended up using a play sand. I believe that Don Casey recommends a foundry sand with a numerical grading but I didn't have access to foundy sand. Play sand is everywhere and is dry, an essential characteristic. A fine even graded (most grains the same size) sand is what's needed. The old bugaboo of keeping a wet edge is very important in laying the sand down. The 404 epoxy has a very short open time. About two square feet of the primer followed by putting the sand down immediately leaving a two inch border of the primer unsanded to serve as a bridge to the next two square foot section seemed to work best for me. any more than 2 sq feet and there will be a marked edge between the sanded sections in the finished non skid. Very helpful if two can work together, one putting down primer, other putting down sand.I was disappointed with the uv absorbtion that the light gray paint exhibits. The new gray surface gets hot in the sun. On this score though, there is no "bare foot feelable" difference between the marine paint and the Sherwin Williams floor paint.