| Its always the folks that sell outdoor finish that recomend pre finish on all four sides. I understnad that business is business the more you sell the more you make. Just looking at this one part of your blog/site/ sales area whatever is incorect in a lot of ways. Say the pre finish goes on,not even going into the problems with space/time/ drying time with your product,nothing goes wrong. The installer is going to scuff up/scrach and generaly mar up the top side so that has to be repaired after the decking is down using your stuff takes a long set up so more time good weather is invloved. Side note>> using one time finish means you have to use it for ever geting it off would be a big time problem<< Say thats not a problem, ya right, what have you done??? The bottom side of the decking is sealed however the top side is exposed to the Sun...the finish will break down... leting water thru the decking..its not able to get out quickily so it sits in the decking. The pre finish all around on 4 sides has worked in reverse. What will this rerverse or anti action cause?? with cedar rot/mildew/mold will start even more quickley than is usually does, with Redwood there will be no effect at + or - all thus waisting a lot of time and money, With South American lumber it will cause the decking to cup but have no effect on life just looks. Preasure treated lumber used as decking is going to warp/twist/splinter and generaly go into a fit like a two year old exposed to the sun no matter how it is finished or fastened again you have waisted time and money. I like the idea of you saying your Co has done field testing up against lab testing. I also have done real field testing on my projects over the years and found the results to be listed above. The decking installed low to grade or high above it has got to breathe, that is exposed to cross vintalation not only under it but in it.Pre finish on all four sides will work against this,cost money and time,result in a sub grade install but will sell double or more finish product. This is not new info any high end paint store is aware of it as well as a quick google. But I still like your stile never stop selling. JonMon |