We (my wife) mixes sand into clear marine varnish. Needs redoing every couple years. Not my idea though. I think we bought a special sand for this. Figured this out after slipping off a narrow bridge over a stream in January. I'll bet you never saw an old fat man run so fast!

http://www.homedepot.com/p/Seal-Krete-3-2-oz-Clear-Grip-Anti-Skid-Additive-402002/203002764

http://homeguides.sfgate.com/prevent-slippery-wood-deck-surfaces-27930.html

https://www.google.com/search?as_q=sand+...ll&tbm=shop

Last edited by RAH; 06/27/15 09:14 AM.