I’ve heard that composite decks can have mold and mildew problems, is this true?
April 4, 2011
Yes and no. Older composite decking materials (e.g. manufactured in the late 90’s) were especially vulnerable to mold and mildew development. Improvements in manufacturing have largely eliminated these problems, though poor deck construction can still contribute to them. Mold and mildew is most likely to occur in areas where water collects and pools for extended periods of time on the composite material. Composite decks should be constructed with a slight tilt away from the home into the yard, allowing for proper water run-off and drainage. The amount of tilt varies per deck, but the keyword here is slight – the tilt should be invisible to the naked eye. Visit our composite deck page for more information on the proper construction and maintenance of composite decks in our Ottawa, ON climate.
