St. Louis is known for its dramatic weather shifts—from humid, scorching summers to icy, unpredictable winters. While this climate adds variety to outdoor living, it can be tough on your home’s exterior features—especially your deck. If you’ve invested in a custom deck, keeping it protected year-round is essential to preserve its beauty, safety, and value.
At GreenScapeSTL Landscaping and Outdoor Living, we help homeowners not only build exceptional outdoor spaces but also understand how to care for them in St. Louis’ unique climate. Here’s everything you need to know to maintain your deck through the heat and the cold.
Summer: Defend Against Heat, Sun & Moisture
1. Inspect and Clean Regularly
Summer brings heat, humidity, and thunderstorms—each of which can take a toll on your deck. Begin the season by removing debris, cleaning stains, and checking for signs of wear like warping boards or loose fasteners. A gentle power wash or scrub with a deck cleaner can restore the surface without causing damage.
2. Apply UV-Protective Sealants
Direct sunlight can cause fading, cracking, or drying, especially on wooden decks. To protect your investment, apply a UV-resistant sealant or stain every 1–2 years. This simple step not only maintains color but also prevents moisture penetration.
3. Watch for Mold & Mildew
St. Louis’ humidity creates a breeding ground for mold and mildew, especially in shaded areas. Regularly sweep away leaves and standing water, and treat affected areas with a mild bleach solution or store-bought deck cleaner to keep your surface safe and clean.
Winter: Prepare for Cold, Ice & Snow
1. Clean and Seal Before the Cold Hits
Before the first frost, give your deck a thorough clean and inspect it for damage. Moisture trapped beneath dirt or leaves can freeze and expand, causing boards to crack or lift. Applying a water-repellent sealant before winter can protect the wood from snow and ice damage.
2. Remove Snow Carefully
Snow buildup adds weight and moisture to your deck. Remove snow using a plastic shovel—never metal, which can gouge the surface—and always shovel in the direction of the boards. If you need to use de-icing products, choose pet-safe and wood-friendly options that won’t corrode hardware or harm your plants.
3. Protect Furniture and Fixtures
Store or cover outdoor furniture and planters to prevent rust stains and material wear. Trim back any tree limbs that could snap under ice and damage your deck structure.
Year-Round Maintenance Tips
- Routine Inspections: Check for rot, splinters, loose nails, and rusting hardware at least twice a year.
- Maintain Drainage: Make sure gutters and downspouts aren’t spilling onto your deck. Standing water can speed up deterioration.
- Re-Stain or Paint as Needed: Besides looking great, fresh paint or stain protects the surface from harsh weather.
- Professional Help: Consider scheduling annual maintenance with experienced deck builders who understand local conditions and can spot problems before they become major repairs.
Build It Right, Maintain It for Life
A well-built deck is an investment in your home’s value and your family’s enjoyment. Whether you already have a deck or are considering a new addition, proper maintenance is crucial for longevity. That starts with quality materials and expert construction—something deck installations from experienced professionals can ensure.
At GreenScapeSTL Landscaping and Outdoor Living, we don’t just design and build—we educate homeowners on how to care for their outdoor spaces in every season. That’s why clients across the region trust us as the best landscaping company for long-lasting outdoor solutions.
Want a Deck That Stands the Test of Time?
Whether you’re ready for a brand-new deck or need expert advice to restore an existing one, we’re here to help. Browse our Our Services page to learn more about what we offer, from patios to pergolas, lighting, and landscaping solutions. You can also visit our About Us page to meet the team behind the craftsmanship and commitment.
Have a question or want to schedule a consultation? Contact Us today to take the first step toward a deck that can handle landscaping in St. Louis MO—through heat, rain, snow, and everything in between.