Hi workshoppers, thought I'd share this. Recently our treated pine decking had detioriated over the years, some boards had a shredded appearance and needed to be replaced. Trouble is once one board is earmarked for replacement, then its companion also looks like a contender and before you know, a sizeable portion of the deck is destined for replacement. The boards had been nailed down for some 25 years and the rafters were sound. We saw this decking paint which stated it could rescue old timber decks.

So we cut out the really bad timber boards and inserted new pine decking, replaced the nails that had 'popped up' with decking screws, pressure washed the lot, and let it dry out for a few days and then painted the lot. The paint was really thick. We found it easiest to apply with a brush, as this got in between the boards and the numerous cracks. The brushes were left in a bucket of water during breaks etc, and also when the brush became too thick. The water was then squeezed out of the brush so although wet it wasn't dripping, which made the paint much easier to apply.
Below shows the first coat result.

After leaving the first coat to harden - a second coat was applied in a few days time. This was a lot easier to apply and allowed the 'missed' cracks and side parts of the boards to be painted. The third coat was applied more or less in the style of normal painting - ie brush for the edges and roller for the main part. The surface is quite smooth, allows the grain to show through and looks good.