How to get rid of chalk lines on decking

Before you snap a single chalk line, make sure you've got the right type of chalk for the application. High permanence chalk lines will most likely discolor a composite deck or lumber deck surface, so I recommend using only dust off marking chalk (Irwin brand - purple is recommended by many deck builders). Never use permanent chalk to snap a line where you'll eventually be walking or where it will be viewable. If you accidentally snap a chalk line with a bright color or with a permanent chalk, immediately scrub the area with soap and hot water to help remove the stain. For stubborn chalk lines, oxygen bleach can be added to the cleaning solution to achieve the desired result. On composite decking DO NOT blast off with a pressure washer as it can permanently damage the deck board.

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