

Every stair and railing we build starts with safety and ends with a clean, durable finish. We install railings that meet Montana code for height and spacing, with options like wood, composite, cable, or powder-coated steel. Our stairs are framed for strength, sloped for comfort, and finished to fit your deck. Whether you need a wraparound staircase or a sleek railing for a mountain-view deck, we make sure it fits, flows, and holds up.
The right railing or stair setup changes how your deck looks—and how you use it. Whether you need a full wrap for elevated decks or a single stair run to a patio, we design with flow, safety, and looks in mind. Our team builds straight, curved, or multi-directional stairs and installs handrails that blend seamlessly with your home’s architecture and materials.
Multi-level stair runs with landing platforms
Horizontal cable, metal, or composite railings
Railing height and spacing built to Montana code

We offer stair treads and railings in cedar, pressure-treated pine, composite decking, powder-coated aluminum, and hybrid styles. Wood offers warmth and natural texture; composite adds durability and low maintenance. For railings, we offer modern cable, vertical pickets, glass inserts, or mixed-material designs. Every component is finished to resist sun, snow, and foot traffic.

Deck stairs take a beating especially in Montana where freeze-thaw cycles and heavy snow can shift or split poorly built frames. We reinforce every tread, anchor every post, and ensure every railing line meets code. We don’t skip steps. From galvanized fasteners to rot-resistant framing, we build railings and stairs that stay level, safe, and solid for years.
Our railings and stairs don’t come in a box they come from experience. We build to meet or exceed IRC and Montana residential deck code, and we design with your preferences in mind. Want minimalist cable lines with wide cedar treads? Or classic picket railing with closed risers? We’ll make it work, measure it right, and build it clean.

Built for Snow & Ice: Anti-slip treads and rust-resistant rails hold up all season.
Custom Looks: Match your deck, home, or modernize with metal and cable.
Framed to Last: Reinforced stringers and posts resist movement and rot.
Full Code Compliance: Handrail height, baluster spacing, and tread depth checked on every job.
Perfect Fit Every Time: No prefab pieces—just custom angles, cuts, and connections.
Don't worry, we can help!
We’ve built stairs for two-step entries and multi-flight decks with wraparound views. Our railings range from clean-lined metal to rustic wood with horizontal accents. Whatever your deck setup, we’ll make it safer and more usable with high-quality, weather-tough craftsmanship you’ll notice on every step.
Great for high decks, walkouts, and elevated landings
Works with composite, wood, and hybrid decking
Optional lighting, grip rail, or ADA handrail add-ons
We build for Montana not mild climates. That means stronger brackets, deeper posts, proper rise and run, and fasteners that don’t rust when buried in snow. Every stair set includes drainage planning, and every railing is anchored, sealed, and aligned with laser precision. Whether in wind-heavy Helena or snow-packed Kalispell, our work stands up year after year.
Here are answers to the most common questions we hear from Montana homeowners about railing upgrades and stair installs:
Yes. We inspect the structure and can replace either component independently—while checking for code and safety issues.
Metal and composite perform best, but we seal cedar and treated wood to last in all seasons.
Most decks above 30 inches from grade require railings per Montana residential code.
Absolutely. We offer tread lights, ADA-compliant rails, and night-friendly designs.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Innovation
Fresh, creative solutions.

Integrity
Honesty and transparency.

Excellence
Top-notch services.
Whether you're looking to add a sun-soaked patio, rebuild a storm-damaged deck, or design a multi-level masterpiece, we’re ready to help. Alliance Deck Builders of Montana brings expertise, materials, and trust to every job no matter the size. Contact us today to schedule your free consultation and let’s bring your outdoor vision to life.

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