Essential Tips for Preparing Your Deck for Winter in New Hampshire

Jul 24, 2025

Understanding the Importance of Winterizing Your Deck

As winter approaches in New Hampshire, it's crucial to prepare your deck to withstand the harsh weather conditions. Proper preparation not only preserves the deck's aesthetic appeal but also extends its lifespan. The combination of snow, ice, and freezing temperatures can cause significant damage if preventative measures aren't taken.

Winterizing your deck involves cleaning, sealing, and protecting it from moisture and cold drafts. By taking the time to winterize, you can prevent costly repairs and ensure your deck is ready for use come spring.

deck winter

Thoroughly Clean Your Deck

The first step in preparing your deck for winter is a thorough cleaning. Remove all furniture and decorations to gain full access to the surface. Sweep away leaves, dirt, and debris, as these can trap moisture against the wood.

Next, use a deck cleaner or a mixture of water and mild detergent to scrub the surface. Pay special attention to areas with mold or mildew, as these can worsen over winter. Rinse thoroughly with a hose, ensuring no soap residue remains.

Inspect for Damage

Once clean, inspect your deck for any signs of damage. Look for loose boards, protruding nails, and cracks in the wood. Address these issues promptly to prevent further deterioration during the winter months.

deck inspection

Seal and Protect Your Deck

Sealing your deck is a crucial step in protecting it from moisture damage. Choose a high-quality sealant appropriate for your deck's material, whether it's wood or composite. Apply the sealant evenly, following the manufacturer's instructions for the best results.

Sealing not only protects against moisture but also helps retain the deck's color and prevents fading. Be sure to perform this task on a dry day when no rain is forecasted for at least 24 hours.

Consider Adding a Tarp or Cover

For additional protection against snow and ice, consider using a tarp or deck cover. This extra layer acts as a barrier, reducing the amount of moisture that reaches the deck's surface. Ensure the cover is secured tightly to prevent it from blowing away in strong winds.

deck tarp

Prepare Deck Furniture and Accessories

Don't forget about your deck furniture and accessories when preparing for winter. Store cushions and fabric items indoors to prevent mold and mildew growth. For larger items like tables and chairs, cover them with weatherproof covers or store them in a garage or shed if possible.

If you have a grill or other outdoor appliances on your deck, ensure they are properly covered or stored away to avoid rust and damage from the elements.

Regular Maintenance Throughout Winter

Once your deck is winterized, some maintenance throughout the winter months is still necessary. Regularly clear snow using a plastic shovel to avoid scratching the surface. Additionally, promptly remove any ice buildup with pet-safe de-icing products to prevent slips and falls.

By taking these steps, you can help ensure your deck remains in excellent condition throughout the winter season. With a bit of preparation and care, you'll be ready to enjoy your outdoor space as soon as warmer weather returns.