Deck sealing is a critical aspect of maintaining the beauty and longevity of your deck. By sealing your deck, you protect it from the damaging effects of weather, foot traffic, and UV radiation. However, many people underestimate the importance of deck sealing and end up paying the price with costly repairs or replacements down the road. In this article, we will explain why deck sealing is so important and provide you with the steps on how to do it.

Why is Deck Sealing Important?

Deck sealing is vital because it protects your deck from moisture damage. When wood is exposed to water, it can lead to swelling, warping, and rotting. This can cause structural damage and make your deck unsafe to use. Additionally, UV radiation from the sun can cause the wood to fade and lose its natural beauty. Deck sealing can prevent all of these issues and ensure that your deck remains strong, sturdy, and beautiful for years to come.

Steps to Deck Sealing

  1. Clean Your Deck

Before sealing your deck, it’s essential to clean it thoroughly. Start by removing any furniture, plants, or other objects from the deck. Sweep the deck to remove any loose dirt and debris. Then, use a power washer or a deck cleaner to remove any remaining dirt, mildew, or algae. Allow the deck to dry completely before moving on to the next step.

  1. Sand the Deck

Once your deck is clean and dry, use a sander to smooth out any rough spots or splinters. Sanding your deck will not only improve its appearance but will also help the sealant to penetrate the wood more effectively.

  1. Apply the Sealer

There are many types of deck sealers available, such as clear, tinted, or solid-colored. Choose the type that best suits your needs and preferences. Begin by applying the sealer to the railings and spindles of the deck. Use a brush to apply the sealer in a thin, even coat. Be sure to cover all exposed areas, including the tops and bottoms of the railings and spindles. Then, move on to the deck boards, applying the sealer in long, even strokes. Work your way across the entire deck, taking care to avoid drips or puddles.

  1. Allow the Sealer to Dry

Once you’ve applied the sealer, allow it to dry completely before using the deck. This may take several hours, depending on the type of sealer you’ve used and the weather conditions. Check the manufacturer’s instructions for specific drying times.

  1. Maintain Your Deck

To ensure that your deck remains protected, it’s essential to maintain it regularly. This includes keeping it clean, removing any debris, and reapplying the sealer every few years. By taking care of your deck, you can enjoy its beauty and functionality for many years to come.


Deck sealing is a critical aspect of maintaining your deck’s beauty and longevity. By protecting your deck from moisture, UV radiation, and foot traffic, you can ensure that it remains strong, sturdy, and beautiful for many years. Follow these steps to seal your deck effectively and maintain it regularly. By doing so, you’ll save money on costly repairs or replacements and enjoy your deck to the fullest.