Safety, Strength, and Clean Finishes—Restored

Deck Repair & Structural Reinforcement

We Inspect, Repair, and Reinforce Weak Spots

Make Your Old Deck Safe Again

We fix loose boards, rotting frames, failing stairs, and unsafe rails. Our team inspects every piece of your structure, then recommends what’s worth keeping and what needs replacement. We restore decks to full code compliance—and make them look great again.

Not Every Deck Needs a Total Rebuild

We Repair What Works and Replace What Doesn’t

Deck problems don’t always require demolition. We check post depth, joist condition, ledger integrity, and stair safety. If your base is solid, we’ll reinforce and reframe instead of starting over. You get a safe, long-lasting deck at a fraction of the cost.

  • Frame inspections and rot checks

  • Railing, stair, and post replacement

  • Joist and beam reinforcement available

Deck repair in progress with new joists installed alongside original frame

We Start With a Real Inspection

Get a Clear Report on Deck Condition

You shouldn’t have to guess what’s wrong with your deck. We inspect posts, joists, beams, fasteners, stairs, and railings—then give you a written repair plan. We’ll tell you what’s safe, what’s borderline, and what needs to go. That way, you can make informed choices.

Deck reinforcement showing new support posts and added bracing under an existing platform

Restore Safety Without Rebuilding from Scratch

Reinforcement Options That Save Time and Cost

We reinforce aging decks with new joists, beams, braces, and posts—leaving the good structure in place while correcting weak points. It’s ideal for decks that have shifted, warped, or started to rot but don’t need full replacement. Safe, fast, and budget-conscious.

Better Boards, Safer Stairs, Stronger Rails

Upgrade Without Starting Over

We replace worn decking with new boards—composite or wood—while keeping your frame if it’s up to code. We also swap out unstable stairs, rebuild handrails, and secure ledgers to bring everything back into safe condition. It’s a fresh start for your existing setup.

Repaired deck with new stairs and cedar decking installed over existing frame

Why Repair Instead of Rebuild?

  • Faster Turnaround: Repairs take days, not weeks—so you can enjoy your deck sooner.

  • Lower Cost: Reinforcing your frame saves money versus total replacement.

  • Preserve What Works: We keep the safe structure and replace only what’s necessary.

  • Code-Ready Results: Your repaired deck meets today’s safety and building standards.

  • Fresh Look Without Starting Over: New stairs, rails, and boards give your deck a total refresh.

Don't worry, we can help!

Spot the Signs Your Deck Needs Help

Rotten boards, soft stairs, wobbly rails, or sinking posts are all signs your deck needs attention. Whether it’s moisture, age, or old construction, we’ll assess the cause and create a plan to fix it safely—so you can enjoy your space without worrying.

  • Wobbly or leaning railings

  • Water-damaged decking or beams

  • Loose, shifting, or cracked stair treads

We Fix the Damage That Rain, Heat, and Snow Cause

Missouri’s Weather Wears Decks Down

Rain causes rot. Heat warps boards. Freeze-thaw cycles shift posts and stairs. Over time, even well-built decks can fail. We repair weather damage with pressure-treated materials, smart drainage, and framing that resists movement—so your deck can keep up.

Safety, Cost, and What Can Be Saved

Common Deck Repair Questions

If your deck feels unsafe or looks worn out, don’t guess—get answers. Here are the most frequent questions we get about repair vs. rebuild, material lifespan, and what it really takes to restore a deck the right way.

How do I know if my deck is still safe?

We inspect the frame, posts, stairs, and railings to assess whether repairs can bring it back to full safety and code.

Can I replace just the boards, not the frame?

Yes—if the frame passes inspection. Re-decking over a solid frame is a great cost-saving option.

Will repaired sections match the rest of my deck?

We’ll get the closest match available and can replace additional boards for a seamless look if needed.

Is it better to switch to composite during repairs?

Often yes. Composite adds durability and low maintenance—especially if we’re already replacing the surface.

Complete Outdoor Design, Builds & Additions

More Than Just Repairs

Custom deck design with stairs and railing in Missouri

Deck Design & Construction

We design and build custom decks tailored to your home, lifestyle, and outdoor space—built for comfort, code, and long-term value.

Composite deck install with wide steps and fascia

Composite Deck Installation

Durable, low-maintenance decking in brands like Trex and TimberTech. We install with expert framing and clean finishes.

Cedar deck with built-in seating and stairs

Wood Deck Building

Traditional wood decks built from cedar or pressure-treated lumber, sealed for longevity and built with care.

Damaged deck being repaired with new joists

Deck Repair & Structural Reinforcement

We replace rotted joists, tighten loose rails, and restore sagging stairs—bringing your deck back to safe, usable shape.

Weathered wood deck mid-restoration

Deck Restoration & Refinishing

We clean, sand, and seal old decks to restore natural color and extend the life of your outdoor space.

Multi-tiered deck with stair access and rails

Multi-Level Deck Construction

Tiered decks add dimension and function. We build secure, attractive multi-level systems with unified stairs and rails.

Home deck extension in progress with composite boards

Deck Extensions & Re-Decking

We extend existing decks or replace worn boards with modern composite or sealed wood—saving the foundation when possible.

Covered deck with gabled patio roof

Covered Decks & Patio Roofs

From pergola-style shade to full patio roofs, we protect your deck space from rain, sun, and snow with stylish coverage.

Screened porch addition with ceiling fan

Screened-In Porches & Sunrooms

Enjoy fresh air without the bugs. We build screened rooms and glass-walled sunrooms for relaxing in all weather.

Outdoor kitchen with grill and countertop on deck

Outdoor Kitchens & Grilling Stations

We build grilling areas, outdoor sinks, and kitchen setups into decks—complete with fire-safe materials and smart layout.

Backyard cedar pergola on wood platform

Pergolas, Gazebos & Arbors

Add architectural charm and functional shade with custom pergolas, gazebos, or arbors—built freestanding or integrated.

Poolside deck with waterproof composite surface

Pool Deck & Hot Tub Surrounds

Slip-resistant, water-safe decks designed to wrap hot tubs or pool edges with beauty and durability.

Detached garage with matching siding and roof

Detached Garages & Sheds

We construct code-compliant outbuildings including garages, workshops, and storage sheds with matching exterior finishes.

Custom metal railings and wide staircase on deck

Custom Deck Railings & Stairs

We fabricate and install deck railings and stairs to match your design goals and meet local safety codes.

Rooftop restaurant deck with dining area and railing

Commercial Deck Projects (Restaurants, Rooftops, etc.)

From rooftop lounges to restaurant patios, we build commercial-grade decks that handle heavy use and meet ADA compliance.

Icon of deck with warning sign for inspection and repair

Innovation

Fresh, creative solutions.

Icon of wrench and beam for structural reinforcement

Integrity

Honesty and transparency.

Icon of new railing for deck safety upgrades

Excellence

Top-notch services.

Let’s Build Something That Lasts

We’re more than just deck builders—we’re long-term partners in outdoor living. From concept to completion, Alliance Deck Builders of Missouri works with integrity, craftsmanship, and care. Ready to make the most of your outdoor space? Let’s talk.

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