Expert Guide to Multi-Level Deck Designs for Philadelphia Homeowners

About The Author

Combining a Master’s in Construction Management with expertise as a certified Deck Inspector, Rob Emmett founded Precision Decks. He leverages decades of construction insight to ensure structural excellence in every custom deck and pergola.

Multi-level decks offer a practical solution for homeowners in Philadelphia, where varied terrain and compact yards present unique challenges. These decks optimize space, provide flexible functionality, and turn your outdoor living area into a more usable and accessible environment. 

Let’s dive into the specific design solutions for multi-level decks, whether you’re addressing sloped yards, adding a poolside deck, or maximizing scenic views.

1. Maximizing Sloped Yards with Multi-Level Decks

A deck with light-colored composite decking, featuring black metal railings with a gate, overlooking a green yard with trees in the background.

Efficient Design for Uneven Terrain

For properties in neighborhoods like East Falls or Chestnut Hill, multi-level decks are designed to adapt to the natural land contours of sloped yards, eliminating the need for costly grading. These decks follow the slope, providing accessibility and stability across different tiers.

Technical Considerations:

  • Foundation Engineering: Use helical piers for sloped yards. These screw-like supports stabilize uneven ground and are more efficient to install than traditional footings. For less severe slopes, concrete footings can be used.
  • Water Drainage: A DrySpace underdeck waterproofing system helps direct water away from the deck, preventing moisture buildup beneath and ensuring the longevity of the structure in Philadelphia’s humid climate.

Materials & Features:

  • TimberTech Composite Decking: Ideal for wet conditions, resistant to fading, mold, and mildew.
  • Steel Framing: Provides strong structural support, preventing warping or sagging over time.

Key Benefits:

Benefit Why It Works
Adaptable to Terrain Works with natural slope, reducing grading costs.
Increased Usable Space Multiple levels create distinct zones, optimizing outdoor functionality.
Durability Steel framing and composite decking provide long-term stability and weather resistance.

2. Creating Functional Zones on Multi-Level Decks

Efficient Zoning for Maximum Use of Space

In densely populated neighborhoods like Fishtown or South Philly, where space is limited, multi-level decks allow you to create distinct zones—ideal for dining, lounging, or entertaining—while preserving open sightlines.

Technical Breakdown:

  • Structural Load Balancing: Beams and joists (16 inches apart) must be spaced correctly to handle weight distribution across multiple levels. Cantilevered beams can extend deck sections without extra posts, reducing the need for support columns in tight spaces.
  • Underdeck Waterproofing: A DrySpace system turns wasted space under the deck into functional storage or seating, keeping the underside dry and expanding usability.

Design Idea for Functional Zones:

Upper Level Middle Level Lower Level
Dining Area Shaded Lounge Area Fire Pit/Relaxation
Raised for better views Easy access for transition Integrates with the garden or pool area

3. Incorporating a Pool: Decking Around Above-Ground Pools

A spacious deck with light-colored composite decking, featuring white and black railings, surrounding an above-ground pool. The deck includes seating areas with red cushions, umbrellas, and a dining table.

Optimizing Poolside Deck Design for Functionality and Safety

If your property includes an above-ground pool, multi-level decks allow you to blend functionality with aesthetics, providing access points and extra seating around the pool area.

Technical Considerations:

  • Materials for Poolside Areas: TimberTech composite decking is water-resistant, helping to prevent mildew and mold, making it an ideal choice for poolside settings.
  • Framing Considerations: Steel framing supports the weight and durability required for poolside decks, withstanding constant moisture without corroding.

Design for Poolside Multi-Level Deck:

Upper Level Lower Level Added Features
Seating with views Poolside bar or lounge area Underdeck waterproofing to create dry space beneath
Elevated for privacy Easy access for pool users Built-in storage for pool equipment

Did You Know?
Underdeck waterproofing doesn’t just manage water runoff; it creates extra usable space beneath the deck for storage or additional seating.

4. Designing a Hot Tub Retreat: Privacy and Comfort

Creating a Private, Elevated Hot Tub Oasis

By placing a hot tub on a lower level of a multi-level deck, you can create a private, easy-to-access retreat. This design works well for properties in neighborhoods like West Philadelphia, where space and privacy are important.

Technical Breakdown:

  • Height Considerations: Ensure a rise of 6-8 inches between deck levels to provide easy access to the hot tub without making the steps too steep.
  • Privacy Features: Use privacy walls, planters, or lattice screens to create an intimate environment. Westbury aluminum railings add durability and a clean, modern look.

Design for Hot Tub Retreat:

Lower Level Privacy Features Comfort
Hot tub area Privacy screens or built-in planters Aluminum railings for easy access
Secluded and private Built-in seating for relaxation Heated lighting for evening ambiance

5. Maximizing Scenic Views: Create Multiple Vantage Points

A raised deck with composite decking and black aluminum railings extending from a home with visible support columns underneath.

Utilizing Multi-Level Decks to Improve Your Landscape Views

For homeowners with expansive views—whether of wooded landscapes or cityscapes—multi-level decks offer the perfect platform to capture these vistas from various levels.

Technical Breakdown:

  • Railing Material Selection: Opt for glass railings or cable railings to maintain unobstructed views while ensuring safety.
  • Deck Framing for Stability: Steel framing provides the necessary support for elevated platforms, maintaining structural integrity during heavy winds and other weather conditions.

Design for Scenic Views:

Upper Level Lower Level Best View Features
Dining with panoramic views Private seating area Glass or cable railings for unobstructed views
Wide open views Ideal for morning relaxation Framing for long-term durability

 

Multi-Level Deck Maintenance, Lifespan, Durability, and Costs

Category Details Best Practices
Maintenance – Composite Decking: Requires minimal maintenance, just clean with soap and water.
– Wood Decking: Needs annual inspection and re-sealing every 1-2 years.
– Clean composite decking 2-3 times a year. – Re-seal wood decking before winter. – Inspect railings annually for rust and stability.
Lifespan – Composite Decking: 25-50 years, depending on material (e.g., TimberTech or AZEK). – Wood Decking: 10-15 years with regular maintenance. – Opt for higher-quality composites (e.g., TimberTech or AZEK) for a longer lifespan. – Regularly check for wood rot or damage in high-moisture areas.
Durability – Composite Decking: Resistant to fading, mold, mildew, and water damage.
– Steel Framing: Strong, rust-resistant, and won’t warp or sag over time.
– Aluminum Railings: Rust-resistant, perfect for poolside and wet areas.
– Use steel framing for extra support in multi-level designs. – Consider Westbury aluminum railings for low-maintenance and high durability.
Costs – Composite Decking: $8 to $12 per square foot for installation (TimberTech or AZEK).
– Westbury Aluminum Railings: $30 to $60 per linear foot installed.
– Underdeck Waterproofing (DrySpace): $2 to $4 per square foot.
– Budget for higher initial costs with composite decking, as it requires less upkeep. – Factor in extra costs for underdeck waterproofing to maximize space under the deck.

Frequently Asked Questions

  1. How do I build a multi-level deck in a small yard in Philadelphia?
    In small urban yards, utilize vertical design to create distinct zones, such as elevated dining areas and lower-level seating spaces. Cantilevered beams reduce the need for extra posts, saving space. 
  2. What foundation works best for a multi-level deck on a sloped yard?
    For sloped yards, helical piers are the best option. These screw into the ground, providing stable support without major excavation. If the slope isn’t too steep, you can use concrete footings at each level to ensure stability.
  3. How can I prevent water buildup on a multi-level deck?
    Use an underdeck waterproofing system like DrySpace to channel water away from the deck. Ensure each deck level is slightly sloped (1/8 inch per foot) to allow water to flow off the deck, preventing damage.
  4. What type of railing is best for a multi-level deck?
    For durability, consider using Westbury aluminum railings, which are rust-resistant and require low maintenance. For clear views, cable or glass railings are good options, but ensure the frame can handle the extra weight.
  5. Can I add a hot tub to a multi-level deck?
    Yes, but it requires strong support. Steel framing or reinforced wood beams are needed to support the weight of the hot tub. Ensure the lower level has enough structural reinforcement to support the added load safely.

Start Designing Your Perfect Multi-Level Deck with Precision Decks

A multi-level deck is a functional and efficient solution for optimizing your outdoor space. Whether you’re dealing with sloped yards, planning a poolside retreat, or taking full advantage of scenic views, multi-level decks offer the flexibility and durability to meet all your needs. With materials like TimberTech composite decking, Westbury aluminum railings, and steel framing, you get a durable, long-lasting structure designed to withstand the elements.

Get your free estimate from Precision Decks and start creating the perfect multi-level deck for your home today.

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