Quality Rooftop Decks in Philadelphia

Cumming Construction is a licensed and insured home remodeling contractor based in Havertown, PA, specializing in custom rooftop decks across Philadelphia, Montgomery County, and Delaware County. Our team designs and builds structurally sound, waterproof rooftop decks that enhance urban homes, rowhouses, and townhomes throughout neighborhoods like Fishtown, Northern Liberties, and Rittenhouse Square.

As one of the leading rooftop deck builders in the Philadelphia area, we handle everything from engineering and permitting to design, materials, and construction, ensuring your new rooftop space is safe, stylish, and built to last.

Why Install a Rooftop Deck in Philadelphia?

A rooftop deck is more than just an outdoor space—it’s a lifestyle upgrade. In densely populated urban neighborhoods, rooftop decks offer an opportunity to enjoy fresh air, entertain guests, or simply unwind with a view.

Key Benefits of Rooftop Decks:

Scenic City Views: Enjoy unobstructed views of the Philadelphia skyline, Ben Franklin Bridge, or lush tree canopies in neighborhoods like Chestnut Hill or Queen Village.
Expanded Outdoor Living: Add space for grilling, dining, lounging, or even gardening—right on top of your home or business.
Energy Efficiency: Rooftop decks can act as a layer of insulation, improving your home’s energy efficiency by reducing heat absorption through the roof.
Increased Property Value: A well-designed rooftop deck adds significant resale value, especially in competitive real estate markets like Fishtown, Rittenhouse Square, and Graduate Hospital.

Deck Construction Techniques for Rooftops

When building rooftop decks, we employ specialized construction techniques to ensure structural integrity, waterproofing, and aesthetic appeal. Our options include:

Floating Decks: Ideal for decks built over flat roofs, floating decks are not permanently secured to the structure but rather placed on top, providing a versatile and adaptable outdoor space.
Pedestal Systems: We offer proprietary pedestal systems that provide stable, level, and serviceable deck surfaces over roof membranes, ensuring durability and longevity.

Rooftop Deck Material Options

We offer a variety of durable, low-maintenance, and attractive materials to fit your vision and budget:

Composite Decking

Brands: Trex, TimberTech, MoistureShield
Benefits: Fade-resistant, rot-proof, made from recycled materials, minimal upkeep
Ideal for: Homeowners looking for long-term durability with a modern finish

Natural Wood Decking

Materials: Pressure-treated pine, red cedar, mahogany, Ipe
Benefits: Timeless beauty, customizable finishes, classic feel
Ideal for: Those seeking a warm, organic aesthetic with rich character

We’ll help you compare materials and choose the best fit for your home’s style, usage goals, and maintenance preferences.

Our Rooftop Deck Design & Build Process

Consultation & Site Assessment – We inspect the roof structure, review access points, and discuss your goals.
Engineering & Permitting – We manage all necessary Philadelphia L&I permits and ensure your deck meets local building codes.
Custom Design – Choose layouts, railings, lighting, and material finishes suited to your property and lifestyle.
Construction – Our expert craftsmen build with precision using waterproofing membranes, pedestal systems, and composite decking.
Final Walkthrough & Warranty – We ensure satisfaction, durability, and safety compliance before completion.

Rooftop Deck Ideas for Philadelphia Homes

Outdoor kitchens & grills for entertaining in Center City or Fishtown
Built-in seating and fire pits for cozy nights with skyline views
Planters and privacy screens for greenery in urban environments
Pergolas or shade structures for protection from sun exposure
Rooftop bars or lounge areas for hosting guests year-round

Neighborhoods We Serve in Philadelphia

We proudly build rooftop decks across Philadelphia, including:

Fishtown
Trendy homes and artistic designs are complemented by modern rooftop hangouts.
Northern Liberties
A hub for urban professionals, ideal for multi-use rooftop entertaining spaces.
Queen Village & Bella Vista
Historic charm meets rooftop relaxation in these classic South Philly neighborhoods.
Rittenhouse Square
High-end finishes and sophisticated design tailored to luxury townhomes and condos.
Graduate Hospital
Transform narrow rowhome rooftops into functional, family-friendly outdoor living.
Chestnut Hill & Mt. Airy
Enjoy green views and a quiet escape from busy city life on a custom rooftop deck.

We build rooftop decks in Center City, Old City, Fairmount, Point Breeze, East Passyunk, Manayunk, Chestnut Hill, and Mt. Airy, as well as in nearby suburbs like Bala Cynwyd, Ardmore, Havertown, and Narberth.

Build Your Rooftop Deck in Philadelphia Today!

With our attention to detail, commitment to quality craftsmanship, and dedication to customer satisfaction, Cumming Construction is your trusted partner for rooftop deck projects in Philadelphia.

Frequently Asked Questions About Rooftop Decks in Philadelphia

Do I need a permit to build a rooftop deck in Philadelphia?

Yes. Rooftop decks in Philadelphia typically require permits and must comply with zoning, fire safety, and structural regulations. Our team will handle the permitting process and ensure all work meets city codes.

How much does a rooftop deck cost in Philadelphia?

Costs vary based on size, materials, structural needs, and design complexity. On average, rooftop decks in Philadelphia start around $25,000–$50,000+. We offer detailed, transparent estimates tailored to your specific project.

Can I build a rooftop deck on a rowhome or flat roof?

Yes, many Philadelphia rowhomes and townhomes with flat roofs are suitable for rooftop decks. We’ll inspect your structure to determine load capacity, access options, and the best construction method.

How long does it take to build a rooftop deck?

A typical rooftop deck project takes 4–8 weeks from design to completion, depending on the permitting timeline, weather, and project scope.

What features can I include on my rooftop deck?

We can incorporate built-in benches, planter boxes, privacy screens, lighting, pergolas, outdoor kitchens, and more. Our design team will help you make the most of your space.

Can I add a rooftop deck to my Philadelphia rowhome?

Yes, in many cases you can. Most Philadelphia rowhomes and townhouses have flat or low-sloped roofs, which are well-suited for rooftop deck construction. Before building, your roof must be inspected to confirm that the structure can safely support the added weight of the deck, furniture, and occupants. You’ll also need to comply with Philadelphia Department of Licenses and Inspections (L&I) regulations, which cover setbacks, access, and fire safety. Cumming Construction manages all engineering and permitting requirements to ensure your rooftop deck is safe, code-compliant, and structurally sound.

What’s the best decking material for a rooftop in Pennsylvania weather?

Because Pennsylvania experiences all four season, including heavy rain, snow, and humidity, composite decking is often the best choice for rooftop decks. Brands like Trex, TimberTech, and MoistureShield resist fading, warping, and rot while offering a sleek, low-maintenance finish. For homeowners who prefer a natural look, Ipe or mahogany hardwoods perform well if properly sealed and maintained. Whichever material you choose, it’s important that the deck surface be installed over a waterproof membrane with adequate ventilation to prevent trapped moisture.

How do I maintain a rooftop deck in the winter?

Rooftop decks require minimal upkeep, but Pennsylvania winters do demand a few precautions:

Clear snow carefully with a plastic shovel (avoid metal tools that can scratch decking).
Do not use rock salt, which can damage composite and wood surfaces—opt for pet-safe or calcium-based ice melt instead.
Inspect flashing, drainage, and waterproofing annually to ensure there are no leaks or pooling water.
Cover outdoor furniture and planters or move them indoors to reduce weight and exposure.
Regular seasonal checks help your rooftop deck last for decades and prevent costly water damage.

Do rooftop decks require special drainage systems?

Yes. Proper drainage is critical to protecting the roof and extending the life of your deck. Cumming Construction installs sloped sub-surfaces, pedestal systems, and integrated drainage channels that direct water away from the roof membrane toward scuppers or roof drains. This prevents standing water, leaks, and freeze-thaw damage. During design, we ensure your rooftop deck includes adequate waterproofing and drainage layers while maintaining a level, attractive deck surface above.

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Rooftop Decks in Philadelphia Area