Composite Deck Maintenance in Virginia: A Season-by-Season Guide

One of the main reasons Charlottesville homeowners switch to composite decking is the maintenance — or rather, the lack of it. Composite doesn't need staining, sealing, or sanding. But it does still need some attention through the year if you want it to look new for two decades. Here's the season-by-season guide we give every Trex customer in Central Virginia.

Spring: Pollen and Pressure-Washing

The yellow Virginia pollen season — typically late March through May — is the harshest aesthetic stress on a composite deck. Oak, pine, and dogwood pollen accumulates as a thin film. It looks dingy. It washes off easily.

What to do in spring:

• Clear leaves and debris that overwintered on the deck.
• Wash the deck with warm soapy water and a soft brush. Dawn dish soap works fine. Rinse with a garden hose.
• If you have a pressure washer, set it under 1500 PSI with a wide fan tip held at least 12 inches away. Higher pressure can mar the cap on cheaper composites — Trex Lineage and Transcend handle it but there's no reason to push the limit.
• Spot-clean tree-sap drips with mineral spirits and a soft cloth.

Summer: Heat, Sunscreen, and Spills

Virginia summers run hot and active. The deck gets heavy use — grilling, drinks, kids running through. The two summer maintenance items most homeowners forget:

• Sunscreen and bug spray. Both contain oils that can leave residue on composite. Wipe up obvious drips, and rinse the deck monthly.
• Grill grease. Use a mat under your grill. Grease that hits boards needs to come up immediately — scrape, then warm soapy water, then rinse. If you let grease sit for weeks, you can get a permanent shadow even on a capped composite.

On 90°+ days, dark composites can be hot underfoot. This is normal and not a maintenance issue — but if it bothers you, light-colored area rugs designed for outdoor use can be left out in summer.

Fall: Leaves, Acorns, and Tannin

October and November in Charlottesville drop a lot of organic material onto a deck. The leaf fall itself isn't the issue — the tannins released from wet leaves sitting for weeks can. Wet oak leaves left on a deck for a month leave brown stains that come up but take effort.

What to do in fall:

• Sweep or blow leaves off weekly through the fall.
• If acorns are heavy in your yard, sweep more often — they can pock-mark composite if ground in.
• Do a final wash before the first hard freeze. Soapy water, soft brush, hose rinse.

Winter: Snow, Ice, and Salt

Central Virginia winters are mild compared to most of the Northeast, but we still see freeze-thaw cycles, occasional ice storms, and the rare 6-inch snow. A few rules:

• Use a plastic shovel, not metal, to clear snow. Push, don't chop.
• Calcium chloride or magnesium chloride ice melt is safe on composite. Rock salt is technically OK but can leave residue and damage nearby plantings.
• Don't worry about ice forming on the deck — composite handles freeze-thaw without damage.

What You Don't Have to Do (vs. Wood)

If you're coming from a pressure-treated or cedar deck, the time savings are real. With composite, you don't need to:

• Sand the deck. Ever.
• Stain or seal it. Ever.
• Strip old finishes.
• Replace boards every few years from rot.
• Drive in nails and tighten fasteners every spring.

On a wood deck, expect to spend 10–20 hours a year on maintenance plus $150–$300 a year in materials. On a composite deck, expect to spend 2–3 hours a year on cleaning and approximately zero dollars in materials. Across 25 years, the time and cost savings are substantial.

Annual Inspection

Once a year — usually when you're doing the spring wash — give the deck a closer look:

• Check railings for any movement. Tighten what's loose.
• Check stair treads and risers.
• Look at the ledger board where the deck attaches to the house. Any visible rust on hardware? Any signs of moisture?
• Look at the framing underneath. Composite boards last 25+ years; the framing underneath is wood, and wood can fail. If you see moisture damage, get it inspected before it spreads.

When to Call Us

If you see anything that worries you — soft framing, cracked boards, loose railings, damaged ledger flashing — call. We do inspections through our Deck Check program at no charge. We'd rather catch a small issue early than have you discover a structural problem the hard way.