Before you start washing, check and close all windows and hatches and make sure the water exits on the boat are working properly. There are several ways of getting the water out including the scuppers, a bailing bucket, a bilge pump or by pulling the plugs. So, make sure you know how the water will get out before you start with power washing boat. In addition, check the boat for any items that should not get wet. If you have outdoor carpet, put it in the area where it will stay dry.
The best place to start with is the dock. By washing the dock first, you will eliminate bringing any dirt back onto your clean boat. Turn on your power washer and power wash boat starting with the dock. The best results are achieved when the water is hitting the surface vertically or at almost 90 E degrees. Proceed with cleaning in small sections (3-4 feet wide) and rinse accordingly. When you are done cleaning the dock you can proceed with the rest of the boat. Always start from the highest point of the boat and work your way down. This will guarantee that dirty water will not get on the surface already cleaned. Start pressure washing the boat at the top. Cover the entire area by moving the trigger gun slowly or until you are sure that all the dirt is removed. Always try to hold the pressure on the surface at a perpendicular angle. This way the highest water pressure is applied and the best performance is achieved. In case you are a very detailed person, you can choose to rinse the boat section by section because the cleaning solutions should not sit on the surface for more then 5-10 minutes. The longer the solutions stay on the surface the harder it gets to remove them because they dry out. After completing the top area continue with the deck. The same rule applies - hold the trigger gun perpendicular to the surface you are washing for the fastest and best results. If you have closed-cell foam cushions you can wash them. Make sure you turn them around so they get washed all the way around. When washing dock lines apply a lot of water with no detergents. This will eliminate dirt, salt and ocean/river scum which shortens the life of the lines. Topsides should come last since none of the other parts of the boat can be affected by the dirty water running over. If you have a lift gate, use it to bring up the boat. Allow some extra time for cleaning this surface since this is where plenty of dirt attaches to your boat. Increase the amount of detergent to enhance your cleaning process. When you are done removing all the dirt, all that's left is to dry your boat. If your boat is equipped with the waterways, pull the plugs out to get rid of the water. In case you do not have them, use a professional squeegee and/or absorber. For window cleaning use appropriate cleaning solution. Enjoy your clean boat.
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