Build a Deck with Patio Underneath for Extra Outdoor Space

For homeowners looking to maximize their outdoor living space, building a deck over an existing or new patio can provide the best of both worlds. This innovative design creates a multi-level outdoor oasis perfect for entertaining, relaxing, and enjoying the beauty of the outdoors. Constructing a deck and patio combo is a great way to add valuable square footage, visual appeal, and functionality to your exterior. Follow proper planning and construction methods, and you can create a seamless, durable, and stunning outdoor retreat right in your own backyard.

Benefits of Adding a Patio Under Your New Deck

Building a new deck over an existing patio or constructing them simultaneously provides numerous advantages over having just one or the other. Here are some of the biggest benefits of adding patio space underneath your new deck:

• More Total Outdoor Living Space: By utilizing both the deck and patio, you essentially double the functional area to Spread Out furniture, entertain guests, cook, dine, and relax.
• Expanded Entertainment and Relaxation Zone: A patio under the deck becomes a secluded spot protected from sun and rain that can be used for yoga, reading, parties, hot tubs, and more.
• Better Backyard Space Utilization: Rather than having unused space between deck support posts, the area transforms into beneficial patio square footage.
• Added Value to Your Home: Constructing a deck-patio combo is an appealing home upgrade that can increase property value more than having just one or the other.

With proper design, you can create different "rooms" and activity areas on the two levels that maximize both beauty and functionality for all your outdoor living needs.

Key Design Factors for a Deck Built Over a Patio

One of the keys to maximizing the benefits of a deck and patio is crafting a cohesive design that allows the spaces to work together seamlessly. Here are some important considerations when planning this type of dual-level project:

Structural Support System

The deck must be properly supported so the weight of the structure, people, and furnishings is appropriately distributed and does not compromise patio integrity. This usually involves installing sturdy columns anchored deep into the ground alongside the perimeter of the patio. Interior deck posts should align with patio joints to transfer weight directly downwards.

Stairway and Entry Point Locations

Connecting the two levels together requires well-positioned stairs or ramps.Placement and traffic flow on both levels will dictate ideal entryway locations. Multiple entry points may be preferred for larger patio and deck spaces.

Lighting and Ventilation Considerations

While the deck overhead provides pleasing shade, the covered patio area needs adequate lighting and airflow. Smart design allows sunlight and breeze to permeate while offering seclusion when desired. Outdoor ceiling fans can improve ventilation.

Drainage and Moisture Protection

Proper drainage and moisture control systems are vital to prevent leaks, rot, and water damage under the deck. Using weather-resistant building materials, applying waterproof sealants, and sloping surfaces for efficient drainage is critical.

Compliance with Building Codes

All aspects of the deck and patio project must adhere to local zoning ordinances and building codes. Many areas have specific requirements for patio coverage, deck height and railing construction, and entryway dimensions that must be followed.

Constructing a Sturdy and Durable Deck Floor Above the Patio

The deck itself must be meticulously assembled to form a safe and robust floor that seamlessly spans the patio area below. Here are some tips for flawless deck installation:

Choose the Right Deck Boards

The decking boards that form the floor must withstand weight, foot traffic, weather, and wear-and-tear over time. Pressure-treated lumber, tropical hardwoods, or composite materials are great options for durability and performance.

Allow for Proper Drainage

Small gaps between deck planks allow rainwater to drain through to the patio below. Proper moisture control also involves using tongue-and-groove boards and protecting cut board ends from water intrusion.

Install Sturdy Floor Joists

Joists provide support for the decking boards and transfer the load to the vertical support posts. Using the correct size, spacing, and spanning based on deck dimensions is critical.

Reinforce Support Posts

Support posts must be set below the frost line into a concrete footer. Adding bracing between posts improves lateral stability. Anchoring posts to the patio footer is ideal.

Attach Deck Boards Securely

Following manufacturer specifications, use proper fasteners and an adhesive membrane to attach deck boards securely to joists for a stable walking surface. Leave a slight gap between boards for drainage.

Fantastic Patio Options for Under Deck Areas

Part of designing a cohesive deck-patio combo is choosing patio flooring that works well situated underneath a deck above. There are several great options, each with their own benefits and considerations:

Poured Concrete Patio

A poured concrete slab offers a smooth, seamless, and highly durable surface perfect for under-deck use. Concrete patios require proper slope, expansion joints, and curing but make an ideal foundation for the posts above.

Stone or Paver Patio

For a stylish decorative look, patios built from natural stone, concrete, or brick pavers create an elegant under-deck space. Permeable joints allow drainage. A solid base and edged borders keep pavers in place.

Gravel Patio

For a quick, affordable patio option, gravel spread over compacted soil or an aggregate base creates a casual surface with automatic drainage. Edging helps contain the gravel stones in place.

Tile Patio Flooring

Tile laid over a concrete foundation or footings provides an elegant under-deck flooring look. Porcelain or natural stone tiles must be properly grouted and sealed. Tile patterns can enhance visual appeal.

Integrating Deck and Patio into a Seamless Outdoor Space

With good design, the deck above and patio below can transform from separate areas into one fluid, expansive outdoor space. Here are some methods to create cohesion:

Matching Elevations and Transitions

Keep patio height close to the bottom of the deck above for a smooth step down transition between levels. The space under deck can be excavated to match patio height if needed.

Seamless Staircases and Entryways

Stairs between deck and patio should be wide, sturdy, and optimized for easy passage between levels. Multi-level railings and lights improve safety and visibility.

Cohesive Design Features

Using the same or complementary materials, colors, and accents ties the deck and patio together. Repeating design themes and visual elements creates fluidity.

Maximizing Enjoyment of Your Deck and Patio Combo

Once built, it's time to take full advantage of all the possibilities your new outdoor living space has to offer. Make your deck-patio combo the ultimate backyard oasis with these enhancements:

Strategic Furniture Arrangements

Place furniture groupings in dedicated activity zones on the deck and patio. Separate dining, lounging, and entertainment areas create multi-use spaces.

Added Amenities

Improve ambiance and functionality with features like lighting, ceiling fans, speakers, drapes for adjustable shade, and a fireplace or firepit. An outdoor kitchen enhances entertaining.

Surrounding Landscaping

Frame the deck and patio with beautiful gardens, trees, plants, and flowers to further expand your outdoor living area.

Add personality with area rugs, pillows, plants, artwork, and accessories to really make your deck-patio area feel like home.