What Is the Best Waterproofing For a Deck?

Types of Deck Waterproofing

• If you have a wooden deck, you can use clear or tinted waterproofing products specifically designed to protect the wood grain. Waterproofing products for masonry decks prevent water from leaking through the decking material and are available in oil- and water-based formulas. You can use a clear or pigmented coating on masonry decks, or you can use a product that forms a film over the surface.

What to Seek

• The best waterproofing products for decks contain agents that help prevent water damage, along with damage from UV rays, mold and fading. In addition to shopping for a waterproofing product appropriate for the decking material you use, also take into consideration the amount of foot traffic it must withstand. If you frequently use your deck for entertaining or as the main entrance into your home, consider using a waterproofing product that can withstand heavy-duty use.

Common Pitfalls

• While multi-surface waterproofing products exist, their primary purpose is to only prevent water damage. Multi-purpose waterproofing products generally do not protect against mildew, UV rays, fading or dry rot. A misconception about deck waterproofing products is that deck stains offer the same protection. While a deck stain may have some waterproofing qualities, it may not offer protection against mold or mildew damage. When shopping for a deck waterproofer, read the label to see how long the product lasts. You may find that more expensive products do not need to be reapplied as often as their less expensive counterparts.

Insider Tips

• According to the Extreme How-To and Home Depot websites, the best deck waterproofing solution is useless if you apply it to a deck you did not previously clean. Dirt and other particulates on a deck will prevent a waterproofing product from adhering to the deck surface properly. Manufacturers usually provide directions for cleaning your deck on their waterproofing products to help ensure you receive the maximum benefits.