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I tried HD-80 on an old deck probably 10-12 years old and it had never treated. EFC-38 has worked in the past but I thought I would try something different I used HD-80 and 1/2oz. to 1gal. First we wet down the entire deck surface before applying the HD-80 having my worker apply the HD-80 and...

:confused: I have not done a lot of flat work but a deck client of mine asked if i could get the tire marks out of her concrete drive way. I have a cold-water 3500psi 5gpm Landa pressure washer. What chemicals should I use to produce the best possible results? Do I need to rent a hot water unit...

Hello every one, This is my first post on the Pressurewashing Institute bbs. I was hoping to get some input on a old deck, I will be starting next week. The deck is 2200 sf and 10 years old, and the only problem is there has been nothing done to it in 10 years so the deck is very gray. does any...