Moisture from urban planter boxes can silently damage your wooden deck, leading to rot, warping, and mold. Fortunately, with proactive measures, you can create a durable barrier. Start by applying a high-quality water-repellent sealant specifically formulated for decking. Reapply this sealant every one to two years, or as the manufacturer recommends, to maintain its protective layer. For direct planter contact, install a physical barrier. Place a waterproof tray or liner inside the planter box to catch excess water. More effectively, elevate the planter box using decking feet or a stand to ensure at least a half-inch of air circulation between the box bottom and the deck boards. This gap prevents constant moisture contact and allows the deck to dry. Regularly inspect the area for water pooling and wipe away any spills immediately. For long-term projects, consider using a sheet membrane or liquid-applied waterproofing system beneath the planter location before installation. By combining proper sealing, physical separation, and consistent maintenance, you can enjoy your green space without compromising the integrity and beauty of your wooden deck.
How do I protect the surface of my wooden deck from moisture coming from the urban planter boxes?
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