If you have been hired to waterproof a deck and need to learn how or just want a reminder as to how it's done, then this guide is for you. Deck waterproofing is a simple process wherein a deck is cleaned off, covered with a thick polymer or acrylic solution, and allowed to dry to seal the deck and prevent moisture from seeping inside the deck boards.
Clean The Deck
The first thing that you will need to do is clean the deck off. This is to prevent any dirt or other materials from being practically glued to the deck boards. You can do this by clearing off any debris, sanding down anything stuck to the deck, and power washing it before allowing it to dry. This will remove any debris from the deck and allow for the sealant to better stick to the deck as well. You may need to use chemicals to remove any fungus or mold on the deck if either one is present, as you don't want to seal over the fungus or mold. This will cause more damage to the wood itself.
Sealant Versus Coating
There are two ways to waterproof a deck — you can apply a clear sealant that behaves much like wax on a car or you can apply a deck coating that acts more like paint. The former is generally clear and thin, while the latter is much thicker. You can apply sealant with a roller or a brush, while waterproof coating can be applied with both of those and as a spray. Sealing is the more basic option, and you may find that coating works much better while also having more options for color. However, coating can also peel easily, and it can feel rough to walk on.
Regardless of the waterproofing method you choose, you will want to make sure that the deck is allowed to dry. You will want to make sure that the weather outside is projected to be dry, with the lowest amount of precipitation you can afford. If you're worried, it may be beneficial to temporarily cover your deck with a temporary roof in order to protect it from any rain. Coatings may take longer than just a day to dry, as they also need to cure and adhere to the deck. Sealants typically only take a day. If you're short on time, then it may be beneficial to apply a sealant now, let it dry, and apply a coat later.
Waterproofing a deck can be difficult. You will need to clean off the deck thoroughly before applying either a sealant or a deck coating. Always make sure that the deck is allowed to dry.
For more information, reach out to a deck waterproofing service.