For wood use the least amount of pressure you can.

Your mix is fine if it works for you. If the decks do not have a sealer or stain on them. If they do, you need to use a wood stripper, then a cleaner.

Your price seems very low. How ever areas are very different. Just to clean we would be at 65 to 75 cents per sq ft. To clean and seal 1 to 5 dollars per sq ft depending on the size of the deck. Fence prices are 2.50 per side per ft clean and seal/stain.


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Dan Flynn
Flynn Service Pro
www.powerwash.net
708/715-4206