A composite deck is much more than the boards visible on the finished surface. The quality and accuracy of the framing underneath can have a major impact on how the composite decking looks and performs for decades.
When choosing a composite deck contractor, look for a company with experience installing multiple major decking brands and product lines, not simply a contractor who occasionally installs composite decking. Different manufacturers and collections can have specific requirements for joist spacing, board spacing, fastening systems, stair installation, ventilation, overhangs, picture framing, and expansion and contraction. Following those requirements is also important for protecting the manufacturer’s warranty.
At TrueDecks®, we install leading composite and PVC brands including Trex, TimberTech, AZEK, Fiberon, Deckorators, Wolf, and others. Because we are not limited to one manufacturer, we can help homeowners compare products based on appearance, budget, warranty, heat exposure, maintenance expectations, and long-term performance.
Framing is particularly important. TrueDecks® commonly uses 12-inch-on-center joist spacing to provide a more rigid structure and a solid foundation for modern composite decking. Proper blocking, stair framing, railing reinforcement, structural connections, drainage, and moisture protection should also be planned before the decking is installed, not treated as afterthoughts.
Homeowners should also ask whether the contractor is trained or certified by the manufacturers they install, understands the applicable installation requirements, and will handle permits and inspections when required.
Finally, consider what happens after the deck is built. TrueDecks® has more than 25 years of experience building, repairing, resurfacing, and maintaining decks. We see firsthand how different composite products and installation methods perform years after installation. That long-term experience influences both the products we recommend and how we build.
A qualified composite deck contractor should not simply install attractive boards. They should understand the entire system underneath them and build the structure for long-term performance, manufacturer compliance, future serviceability, and safety.
How Much Does It Cost to Have a Composite Deck Built?
The cost of a composite deck can vary significantly, which is why TrueDecks® does not recommend relying on generic online cost-per-square-foot estimates. Two decks with exactly the same square footage can have substantially different costs depending on their design, height, materials, structural requirements, and site conditions.
The composite decking itself is only one part of the project. The total investment can be affected by footings, framing, deck height, stairs, railings, structural connections, demolition and disposal, site access, permits, drainage or waterproofing systems, lighting, fascia, picture framing, and other custom features.
There can also be substantial price differences between composite and PVC product lines. TrueDecks® installs products from manufacturers including Trex, TimberTech, AZEK, Fiberon, Deckorators, Wolf, and others, with options ranging from value-oriented collections to premium products with different appearances, performance characteristics, and warranties.
This is also why homeowners should be cautious when comparing a deck price found online with a professional proposal. Some published prices may represent decking materials only, basic installations, national averages, or scopes that exclude railings, stairs, demolition, permitting, and other significant components of a completed project.
When comparing contractor estimates, compare the complete scope of work, not simply the total price or a square-foot number. Confirm what is included for framing, decking, railings, stairs, demolition, permits, warranties, structural upgrades, and other project requirements.
TrueDecks® provides a free on-site consultation and detailed estimate based on the actual property, design, materials, and scope of work. This gives homeowners a realistic project price rather than a generic online number that may have little relationship to the deck they actually want to build.
How Long Does It Take to Build a Composite Deck?
For a typical 20′ × 16′ composite deck with stairs, the actual construction phase generally takes approximately 1–3 weeks once the project is ready for construction. Larger, elevated, multi-level, or highly customized decks may take longer.
The construction timeline depends on factors such as deck size and height, framing complexity, stairs and railings, site access, demolition, inspections, weather, and custom features such as lighting, drainage systems, picture-frame decking, or specialty railing designs.
Composite decking also requires careful planning before installation. Different products may have manufacturer-specific requirements for joist spacing, blocking, fastening, board spacing, stair construction, and expansion and contraction. At TrueDecks®, we commonly frame at 12 inches on center, providing a rigid structure and accommodating many modern composite decking applications.
It is important to distinguish construction time from the overall project timeline. Before construction begins, a project may require design and drawings, HOA approval, engineering when applicable, building permits, material selections, ordering, and scheduling. Depending on the jurisdiction and complexity of the project, these pre-construction steps can take considerably longer than the physical construction itself.
TrueDecks® manages the project from planning and permitting through construction and required inspections and provides homeowners with an anticipated construction schedule based on their actual project.
This is stronger because it answers the question with a real TrueDecks® benchmark rather than the generic “one to two weeks,” while protecting you from creating the expectation that the entire process takes only 1–3 weeks.
What Questions Should I Ask a Composite Deck Contractor?
When interviewing a composite deck contractor, don’t focus only on the decking brand and final price. A composite deck is a complete structural system, and the quality of the framing, connections, moisture protection, stairs, railings, and installation can be just as important as the decking itself.
Important questions include:
- Which composite decking brands and product lines do you install?
Ask for the specific manufacturer and collection rather than accepting a generic description such as “composite decking.” Different products can vary considerably in appearance, price, warranty, heat performance, scratch resistance, and installation requirements. TrueDecks® works with leading manufacturers including Trex, TimberTech, AZEK, Fiberon, Deckorators, Wolf, and others, allowing us to recommend products based on the project rather than being limited to one brand.
- Are you trained or certified by the manufacturers you install?
Manufacturer training and certification can demonstrate that the contractor is familiar with the product’s installation requirements. Proper installation is also important for protecting applicable manufacturer warranties.
- How will the deck be framed?
Ask about joist spacing, beam and post layout, blocking, structural connections, stair framing, railing reinforcement, and moisture protection. At TrueDecks®, we commonly use 12-inch-on-center joist spacing to provide a more rigid structure and a solid foundation for modern composite decking.
- Will the deck be freestanding or attached to the house?
Requirements vary by jurisdiction. Even where ledger attachment is permitted, TrueDecks® generally recommends freestanding construction or robust through-bolted structural connections when practical. Our objective is long-term structural performance, not simply meeting the minimum requirement necessary to pass inspection.
- How will the wood framing be protected for the long term?
This is especially important with composite decking because the decking can last for decades, while the pressure-treated wood framing underneath remains vulnerable to moisture and deterioration.
Based on more than 25 years of experience building, repairing, resurfacing, and maintaining decks, TrueDecks® uses additional protection methods that are not always required by minimum building code. We apply a specialized protective sealant to the wood framing and use joist protection tape to reduce moisture exposure and help extend the life of today’s pressure-treated lumber.
We also use picture-frame decking designs to help protect the rim joists and fascia boards from premature moisture-related damage, while providing a cleaner, more finished appearance.
These methods come directly from problems we have seen repeatedly while repairing and resurfacing older decks. TrueDecks® does not build simply to pass inspection. We use what we have learned from decades of maintaining and repairing decks to build structures for better long-term performance.
- What happens if my existing framing is being reused?
For a resurfacing project, the existing structure should be evaluated before new composite decking is installed. TrueDecks® evaluates accessible posts, beams, joists, structural connections, flashing, hardware, stairs, and railing attachment areas and identifies repairs, reinforcement, moisture protection, or upgrades that may be appropriate before resurfacing.
- What fastening system will be used?
Different composite products may require specific hidden fasteners, screws, plugs, clips, spacing, and installation methods. The contractor should understand the requirements of the selected product and follow the manufacturer’s installation instructions.
- What exactly is included in the estimate?
Make sure you understand what is included for framing, decking, fascia, railings, stairs, demolition, disposal, permits, inspections, structural upgrades, moisture protection, and custom features. Comparing only the final price can be misleading when contractors are proposing very different construction methods and scopes of work.
- Who handles permits and inspections?
TrueDecks® handles required building permits and inspections for our construction projects rather than placing that responsibility on the homeowner.
- Who will supervise the construction and quality control?
Ask who is responsible for ensuring the project is actually built according to the approved plans, manufacturer requirements, applicable codes, and agreed scope—not simply who sold the project.
- What warranties apply?
There are generally three different warranties to understand: the manufacturer’s material warranty and the contractor’s workmanship and labor warranty. Ask what each covers, for how long, and who you contact if a problem develops.
- What happens after the deck is completed?
This question is often overlooked. A composite deck is a long-term investment, so homeowners should consider whether the contractor will still be available years later for inspections, repairs, maintenance, warranty assistance, or eventual resurfacing.
TrueDecks® has more than 25 years of experience building, repairing, resurfacing, restoring, inspecting, and maintaining decks. That means our construction methods are influenced not only by how a deck looks when it is new, but by what we have learned from seeing decks years and even decades later.
A qualified composite deck contractor should be able to explain what is underneath the composite decking, how that structure is being protected, why particular construction methods are being used, how manufacturer requirements will be followed, and who will stand behind the project long after the final inspection.
What Should a Composite Deck Estimate Include?
A composite deck estimate should clearly identify the materials, construction methods, scope of work, and major exclusions so homeowners understand what they are actually purchasing. Two estimates for the same size deck can represent very different projects.
Important items should include:
Decking: The manufacturer, product collection, and color when selected should be identified rather than simply stating “composite decking.” Trex, TimberTech, AZEK, Fiberon, Deckorators, Wolf, and other manufacturers offer multiple product lines with significant differences in appearance, performance, warranty, and cost.
Framing: The estimate should identify whether the project includes new framing, existing framing, repairs, reinforcement, or resurfacing. Important structural specifications such as joist size and spacing should also be clearly defined. TrueDecks® commonly uses 12-inch-on-center joist spacing for a stronger, more rigid structure.
Framing Protection: Long-lasting composite decking should be installed over framing designed for long-term service. TrueDecks® uses a specialized protective sealant on the wood framing, joist protection tape, and construction details intended to reduce moisture-related deterioration. Our picture-frame decking design also helps protect rim joists and fascia boards while providing a cleaner finished appearance.
Fasteners and Hardware: The estimate should identify the appropriate hidden fastening system, screws, plugs, structural hardware, and other important fastening methods required for the selected decking and railing systems.
Railings and Stairs: The railing manufacturer, collection, color, baluster style, post components, stairs, landings, and other major specifications should be identified when applicable.
Demolition and Disposal: If an existing deck is being removed, the estimate should state whether demolition, hauling, and disposal are included.
Permits and Inspections: The proposal should explain who is responsible for required permits and inspections. TrueDecks® handles the permitting and inspection process for our construction projects.
Site and Structural Requirements: Items such as footings, deck height, house connections, access limitations, drainage considerations, and other significant site conditions should be addressed when applicable.
Additional Features: Lighting, under-deck drainage systems, privacy screens, built-in features, multiple levels, custom decking patterns, gates, and other upgrades should be clearly identified.
Workmanship and Manufacturer Warranties: The estimate or accompanying contract should explain the applicable TrueDecks® workmanship warranty and manufacturer material warranties.
Exclusions and Potential Additional Work: A professional estimate should also make clear what is not included and identify conditions that cannot reasonably be determined before demolition or construction begins.
The most important thing is to compare scope to scope, not price to price. A lower estimate may use different decking, wider joist spacing, less framing protection, different railings, fewer structural improvements, or exclude demolition, permitting, disposal, and other work included in another contractor’s proposal.
At TrueDecks®, we believe a detailed estimate should allow the homeowner to understand what materials are being installed, how the deck will be constructed and protected, what services are included, and what they are receiving for their investment.
Choosing a Composite Deck Contractor
Choosing a composite deck contractor involves more than finding someone who installs composite boards. Look for a contractor with proven experience in composite deck construction, structural framing, manufacturer installation requirements, moisture protection, permitting, and long-term deck performance.
Verify the contractor’s licensing, insurance, manufacturer credentials, workmanship warranty, references, and completed projects. Just as importantly, ask how the deck will be built underneath the finished surface and what methods are being used to protect that investment for the long term.
With more than 25 years of experience building, repairing, resurfacing, restoring, and maintaining decks, TrueDecks® has firsthand knowledge of how different materials and construction methods perform over time. We use that experience to build beyond minimum requirements where appropriate, incorporating stronger framing practices, specialized framing sealant, joist protection, moisture-management details, and maintenance-friendly construction methods based on what we have seen work in the field.
TrueDecks® installs leading composite and PVC decking products throughout Maryland, Virginia, and Washington, D.C., providing homeowners with one company for the construction, future maintenance, repair, and resurfacing of their outdoor investment.