My understanding from the application instructions provided by Sani-Tred is first apply a prime coat of Permaflex and then when dry apply a mixture of LRB (Liquid Rubber Base) and TRV (Thickening ActiVator) to the edge in such a way as to give you a sloped surface from the top of the plywood to the surface your plywood is attached to. In the case of the plywood being at the edge of roof or walkway I stopped the plywood about 1/8" to 1/4" from the edge and beveled it at about a 60 degree angle.

The plywood and edge of gunnel was then coated with prime coat of Permaflex.

I then applied the mixture of LRB & TAV with a spreader to fill in this angled surface so that it looked like 90 degree edge.

Now the surface is ready for the rubber non-skid granules and a coat of the LRB followed by a coat of the Permaflex-AL as a finish coat.

I made a new engine room hatch for the rear deck and used 1/2" aluminum U-Channel for the edges. I applied the aluminum with waterproof Polyurethane construction adhesive and then taped off the edges and applied my deck treatment.

I hope this gives you some ideas about some different ways to treat edges. I am sure there are probably better ways and I would love to learn about them. If I do, I'll pass it along.

Hang to the riggins,

Wado