As a professional contractor there are several factors when deciding on a stain and the process used. Before applying a new stain, the existing stain needs to be removed. If its the same type of stain with the same color and its completely run its course, (usually within 2-3 years) then you can just clean and re-apply over that existing stain. If your changing colors or type of stain, it needs to be completely removed. The best method for applying stain is the old fashion way, by brushing. I dont recommend rolling or spraying for three reasons. One, the prep time needed with taping off and covering areas etc. which can take several hours. Two, when rolling or spraying you have to back brush anyway so the labor time spent is just as long and three, it simply looks much better. Always try to stick with oil based semi-transparent stains. They are the easiest to remove and re-apply, they look the best and provide the best type of coverage for both UV and water protection. Finally, the best overall professional grade wood preservative or sealant is TWP. Comes in several colors, provides a lower VOC and applies like warm butter. The cleaning and prep process is more important than applying the stain itself so be sure you properly clean the wood with an oxygenated bleach (DO NOT USE CHLORINATED BLEACH). Its a powder form that can be easily mixed into a 5 gal. bucket of water. Spray on with a garden sprayer, let dwell about 15-20 minutes then rinse off at low pressure with a pressure washer (800-1000psi). Second step is to neutralize the cleaner with a wood brightener. Spray on with a garden spray, wait 5 min. then rinse off. You will be amazed that when you apply the brightener wood will literally lighten in front of your eyes. This brings the wood back to its natural PH and that is a critical step often missed. After you have rinsed (and be sure you rinse thoroughly) let dry for 48-72 hours then apply the stain. ONE COAT ONLY! Today's stains only need one coat applications especially oil based stains. Hope this helps...good luck with your project! Here is a link that might be useful: Professional Power Washing Contractor

If you go to www.cabotstain.com. you will see that Lowe's ia an authorized vendor. I would assume Lowe's is the same as the Cabot's sold in the small paint stores. They just don't have all the different type of stain available. If you go to the lowe's web site you will see many Cabot's stains listed but many are not available in the store you list. I have used Cabot's on my deck and it did last about 6 years although it probably should have been recoated after 5. I am not looking forward to doing it again.

Well, we decided we're going to pass on the Sherwin Williams Deckscapes and go with the Olympic Maximum as it is an oil based penetrating stain and I trust that to hold up better than the waterbourne product from Sherwin Williams.

Tibbrix, I guess you haven't seen these new low voc 'stains'. You are correct that stain doesn't peel, but these new stains are more like a paint, as they're acrylic with very little real oil in the formulation, apparently. Much of the criticism which I have uncovered complains about the peeling of these stains. We had just removed our old cedar decrepit deck - the carpenter bees were having a field day with it. We did some research and found that carpenter bees like PT less than cedar (we hope that's true). So the PT is not a beautiful wood like cedar and we'd like a little deeper color - hence the semi-transparent search. Even the sealer type stuff which is now low VOC is having the same issue with durability. Alas....is there no decent solution to my problem? ;-)