no iam not

If your deck is weathered badly, you will need to pressure wash the deck. But pressure washing alone won't do it. You will need to apply wood restorer or cleaner. Do a section at a time. Spray a small section of the deck with the restorer. Keep it wet for about 10 to 15 minutes. Then pressure wash that section. Applying the wood restorer helps prevent damaging your deck with the pressure washer and brings back the natural look of the wood. This done then you can stain after the deck is dry.

The big question is whether it is a semi-transparent, solid color, or natural finish currently. These facts will determine your prep, and product to use moving forward. Is it water based solid, or oil based? etc. Power washing will be most important, so it becomes clean, and gets loose product, dirt, mildew, etc. off the deck.

Total removal of any old coating is always good, but very labor intensive obviously. If you power wash, and then do some hand tool prep, you do not necessarily have to remove it all. You can go over what is left behind. However, if you have the time, and want to remove it, you can. I just know how labor intensive that is, and although best to remove it, you can avoid that step, and just go over what remains.

Best way is with a old soft broom, pour your stain in to a bucket and use the old broom to brush it in to all the grain and groves

Power Washing will only remove the loose sand or dirt.... If the wood Has gone Black, I would sand it till it is more natural looking, then I would use THOMPSON'S WATER SEAL. give the deck a couple of treatments and that should protect it from water Damage...Resist Mildew and UV Damage.....it comes in several tints test on a piece of wood before applying..........for more information Contact http://muskokawoodworks.atspace.co.uk ..... Vince