Stay Outdoors Longer — With Protection From Rain and Bugs

Screened-In Porches & Sunrooms in Washington

Turn Your Deck Into a Bug-Free, Weather-Safe Room

Custom Porch and Sunroom Enclosures That Fit Your Lifestyle

Alliance Deck Builders designs and builds screened-in porches and sunrooms that let you enjoy the outdoors without pests or rain. We create beautiful, code-compliant enclosures using wood or composite decks, matching trim, and options like skylights, fans, and insulated walls. Whether you're adding a simple screened room or a full glass sunroom, we tailor it to fit your home and your goals.

Custom-Built for Comfort, Style, and Year-Round Use

From Summer Shade to Cozy 3-Season Rooms

We offer everything from classic screen walls to fully enclosed 3-season sunrooms. Our projects are designed for comfort, airflow, and natural light — with add-ons like ceiling fans, lighting, and even electrical hookups. We handle the design, permits, framing, and finishes, all in one build.

  • Screened walls with rot-proof trim and posts

  • Glass or vinyl window packages for sunrooms

  • Optional tongue-and-groove ceilings with lighting

Screened porch built on cedar deck with vaulted ceiling and fan in Washington

Don’t Start From Scratch — Enclose the Deck You Have

We Retrofit Existing Decks for Screens or Glass

If your deck is in good shape, we can build a screen or sunroom enclosure right on top. We inspect the structure, reinforce where needed, and build walls, windows, and roofing that match your home. It’s a smart way to expand living space without a major renovation.

Sunroom with glass windows and cedar framing overlooking rainy Washington backyard

Built for the Northwest Climate

Protected From Bugs, Rain, and Strong Winds

Our enclosures are framed and finished to hold up in Washington’s wet weather. We use treated lumber, sealed screens, and solid roof tie-ins to block wind, shed water, and keep pests out. Add a heater or insulated windows, and you can enjoy your porch long after the summer ends.

Comfort and Curb Appeal in One Build

Porch and Sunroom Additions That Add Real Value

Whether you’re planning to stay or sell, a screened-in porch or sunroom adds comfort, functionality, and resale value. We match finishes to your home so the addition blends in beautifully. From French doors to privacy walls, every detail is designed for lasting performance — and everyday enjoyment.

Sunroom with screened lower panels and full glass upper windows on composite deck

Why Homeowners Choose Our Porch & Sunroom Builds

  • Designed for Daily Use: Every project is tailored for comfort, shade, airflow, and weather protection.

  • Year-Round Add-On Options: Add windows, insulation, heaters, and fans for 3-season or all-season use.

  • Retrofits and New Builds: We build over existing decks or create brand-new enclosed structures.

  • Full Permit Handling: We handle design approvals, city permits, and inspections from start to finish.

  • Seamless Design Match: Trim, roofing, siding, and windows are selected to match your home’s look.

Don't worry, we can help!

A Better Way to Use Your Outdoor Space

Screened-in porches and sunrooms let you enjoy the breeze without bugs, the view without wind, and the outdoors without soaking rain. We help you design the layout, pick finishes, and create a peaceful, private space that feels like a real room — because it is.

  • Matching deck, railing, and enclosure systems

  • Electrical options for lights, outlets, and heaters

  • Optional skylights and privacy screens

One Team, One Timeline, One Price

We Handle Design, Build, and Budget in One Place

You won’t need to coordinate a designer, framer, electrician, and roofer. We handle the whole project — from planning to punch list — with one team. Your quote includes everything, your timeline is clear, and your porch or sunroom is built with care.

Planning a Screened Porch or Sunroom?

Here’s What Washington Homeowners Ask

Here are the top questions we hear before building a screened-in porch or sunroom — from timing to costs to add-ons.

Question 1: Can I add a screen room to my existing deck?

Yes — as long as the framing is solid, we can build a screen enclosure or full room on top.

Question 2: What’s the difference between a porch and sunroom?

A porch typically has screen walls only. A sunroom adds windows, insulation, and options for heat and light.

Question 3: Do you need a permit for these projects?

Yes. We manage the entire permit and inspection process.

Question 4: Can I use it year-round?

With the right upgrades — insulated windows, heaters, and proper sealing — yes, you can.

Service Areas Across Washington

Choose the city closest to you!

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Pergolas and deck repairs in Renton WA
Custom deck construction in Seattle WA
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Multi-level deck builder in Spokane Valley WA
Cedar and composite decks in Tacoma WA
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More Outdoor Upgrades Available

From Deck Covers to Full Enclosures

Custom deck design and build in Washington

Deck Design & Construction

Built around your space, lifestyle, and goals using detailed 3D plans.

Composite deck installation with Trex boards

Composite Deck Installation

Durable, low-maintenance decks using Trex, TimberTech, and more.

Cedar wood deck installation in WA backyard

Wood Deck Building

Classic wood options built to match natural settings and last for years.

Deck repairs and framing reinforcement in Washington

Deck Repair & Structural Reinforcement

Fix framing, replace rot, and restore deck safety and stability.

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Deck refinishing project in Washington home

Deck Restoration & Refinishing

Bring weathered decks back to life with sanding, staining, and sealing.

Multi-level deck with stairs and planters

Multi-Level Deck Construction

Tiered designs to match sloped yards and create layered living zones.

Re-decking and deck expansion with new railing

Deck Extensions & Re-Decking

Upgrade or expand an existing deck with modern framing and surfaces.

Covered deck with roof extension in WA

Covered Decks & Patio Roofs

Stay protected from sun and rain with full roof structures or pergolas.

Screened porch and sunroom addition in Washington

Screened-In Porches & Sunrooms

Enjoy the outdoors without pests. Custom built enclosures for year-round use.

Outdoor grilling station with stone base on deck

Outdoor Kitchens & Grilling Stations

Full-featured cooking spaces built into your outdoor deck design.

Cedar pergola with seating area in backyard

Pergolas, Gazebos & Arbors

Architectural accents that add shade, style, and structure to any yard.

Hot tub deck with privacy screen in Washington

Pool Deck & Hot Tub Surrounds

Safe, slip-resistant decks built for wet zones and elevated support.

Detached cedar shed with matching deck trim

Detached Garages & Sheds

Custom outbuildings with deck-style finishes and aesthetic match.

Custom deck railing and stairway in Washington

Custom Deck Railings & Stairs

Modern, traditional, or code-compliant railing systems built to last.

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Commercial restaurant rooftop deck in WA

Commercial Deck Projects (Restaurants, Rooftops, etc.)

Built for business — large-scale, code-compliant, and built to withstand wear.

Screened cedar porch with vaulted ceiling and fan

Innovation

Fresh, creative solutions.

Full glass sunroom on raised deck with railing

Integrity

Honesty and transparency.

Framed-in porch with exposed beams and screen panel install

Excellence

Top-notch services.

Let’s Build Your New Favorite Place to Relax

Whether you’re planning a quiet backyard retreat or a bold rooftop gathering space, Alliance Deck Builders of Washington brings your vision to life. Let’s talk about your project, your style, and your budget — and create a deck that delivers long after the last board is laid.

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