The Real Reason Composite Has Taken Over Newer Cobb County Neighborhoods
Drive through the newer subdivisions around Town Center at Cobb or the developments off US-41 and you will see composite decking on a growing share of the backyards. It is not a trend so much as a response to a specific local annoyance: Georgia's pollen season coats every outdoor surface in a yellow-green film every spring, and a wood deck needs to be scrubbed and eventually resealed to deal with it. Composite rinses clean with a hose in a few minutes.
We install Trex, TimberTech, and several other composite lines throughout Marietta and Cobb County, building the substructure to Georgia code and finishing with whichever board, color, and railing system fits the house and the budget. This is not a product you can buy at a box store and expect to install correctly on your own — proper spacing, fastening, and substructure design all affect how the deck performs over its 25-plus year lifespan, and we get all three right.
Trex vs. TimberTech vs. Budget Composite
Trex and TimberTech sit at the top of the composite market for good reason — both use a fully capped board that resists staining and fading better than uncapped or budget composite, and both back their products with warranties that run 25 to 50 years depending on the line. Budget composite brands cost noticeably less and can be a reasonable choice on a tighter budget, but the caps tend to be thinner and the warranty terms shorter. We carry multiple tiers and will lay out the honest trade-offs rather than pushing whichever brand pays us the biggest margin. For a deeper side-by-side, our decking brand tiers guide compares them board by board.
How Composite Actually Performs Through a Cobb County Summer
Humidity is the thing that wrecks a lot of untreated or poorly sealed wood decks around here — boards cup, fasteners work loose, and mildew finds a foothold in shaded corners. Composite decking does not absorb moisture the same way, so it stays flatter and does not swell or split the way wood can after a wet summer followed by a dry fall. The one real consideration in our climate is heat: a dark-colored board in full afternoon sun on a south-facing deck can get warm underfoot in July, which is why we point homeowners building pool decks or unshaded decks toward the lighter, heat-reflective color lines most manufacturers now offer.
Comparing Composite to a Wood Deck Before You Decide
If you are still deciding between materials, it helps to see the comparison side by side rather than take our word for either option. Our custom wood decks page walks through what pressure-treated pine and cedar actually cost and how much upkeep they need, and our composite versus wood decking breakdown puts real numbers next to both so you can weigh the total cost of ownership, not just the sticker price on day one.
Get a Free Composite & Trex Deck Quote
Free, no-obligation on-site estimates anywhere in Marietta and Cobb County.
📞 Call 470-327-9145
Permitting and Substructure — What's Underneath Still Matters
A common misconception is that composite decking is a lighter, less regulated build than wood. It is not. The City of Marietta and Cobb County both require the same building permit and inspection process for a composite deck's substructure as they do for an all-wood deck, because the framing underneath is still a structural build that has to meet Georgia's wind and snow-load provisions. We pull the permit, engineer the frame to the load and span tables for the specific composite board you choose, and schedule every inspection.
If you already have a wood deck with sound framing, we can sometimes remove the old decking boards, confirm the joist spacing meets composite span requirements, and resurface with composite rather than rebuilding from the ground up — a meaningfully cheaper path when the structure underneath checks out. If it does not, we will tell you honestly rather than build composite over a frame that will not support it long-term.
HOA Approval Around East Cobb
Most East Cobb and Sandy Plains-area HOAs are comfortable approving composite decking since it is a common, code-compliant, and low-maintenance material, but a handful of architectural review boards have specific color or railing requirements. We have been through enough of these approvals to know what documentation a given HOA typically wants and can prepare it as part of your project rather than leaving you to figure it out.
Choosing Color and Board Profile
Composite comes in far more color and grain options today than it did even five years ago, from warm cedar tones to cooler gray-browns that pair well with brick homes common throughout Marietta. We bring physical board samples to your consultation rather than asking you to choose from a photo, because composite color reads differently under Georgia's bright summer sun than it does in a showroom under fluorescent light, and it is a decision you will live with for decades.
A picture-frame border in a contrasting color, hidden fastener systems that leave no visible screw heads, and matching composite fascia and stair treads are small upgrades that make a noticeable difference in how finished the deck looks once it's done. None of them cost much relative to the total project, and we walk every homeowner through these options before finalizing a quote rather than defaulting to the plainest board layout.
Resale Value in a Marietta Real Estate Market
Composite decking has become enough of an expectation in the Marietta and greater Atlanta resale market that agents routinely flag it as a selling point in listing photos. Buyers touring homes near the Chattahoochee River corridor or in the established neighborhoods off Roswell Street increasingly ask whether a deck is composite or wood, and a newer composite deck with paperwork showing it was permitted and built to code tends to close that conversation quickly rather than raise questions during an inspection.
Composite & Trex Decks FAQs — Marietta, GA
Composite decks in the Marietta area typically run from about $15,000 to $32,000 depending on square footage, decking tier, railing choice, and substructure. It costs more than pressure-treated pine up front but eliminates the sanding, staining, and sealing that wood needs. Every estimate is free and itemized.
For most Marietta homeowners, yes, if you plan to stay in the home more than a few years. You pay more upfront, but you skip years of sealing and restaining, and a quality capped composite board typically outlasts pressure-treated pine without fading or splintering the way wood eventually does in our climate.
Very well. Capped composite boards do not absorb moisture the way wood does, so Cobb County's humid summers do not cause swelling, cupping, or rot. Pollen season leaves a yellow film on any outdoor surface, but composite rinses clean with a garden hose far more easily than a wood deck that needs to be scrubbed and resealed.
Trex and TimberTech are premium capped composite lines with the strongest warranties and the widest color selection, while budget composite brands cost less but often have thinner caps and shorter warranty terms. We install several tiers and will walk you through the real differences rather than just upselling the priciest board.
Most premium composite lines carry a 25 to 50 year limited residential warranty on the boards themselves against staining, fading, and structural defects, and we back our own workmanship separately. We will give you the exact warranty terms in writing for whichever product you choose before you commit.
Yes, an attached composite deck needs the same City of Marietta or Cobb County building permit and inspections as a wood deck, since the substructure underneath the composite decking is still a structural build. We handle the entire permitting process for you.
Sometimes, if the existing framing is sound, properly spaced for composite board spans, and up to current code. We will inspect the substructure first and tell you plainly whether it can be reused or whether the frame needs to be rebuilt to safely support new composite decking.
Far less than wood. A seasonal rinse with soap and water, or an occasional pressure wash on a low setting, keeps most composite decks looking new. There is no sanding, staining, or sealing required, which is the main reason homeowners choose it despite the higher upfront cost.
Darker composite colors can get warm in direct July sun, similar to how a dark wood stain does. Most manufacturers now offer lighter, heat-reflective color options specifically for hot climates like ours, and we can point you toward those if a pool deck or a south-facing deck is part of the project.
Most HOAs approve composite decking without issue since it is a widely used, code-compliant material, though some review boards have preferences on color or require the decking to be a certain distance from the property line. We will help you prepare whatever documentation your HOA's architectural review process requires.
If your current wood deck is rotting, warping, or constantly needs refinishing, replacing the decking surface with composite while reusing or rebuilding the frame is a common upgrade. Our deck repair and restoration team can assess your existing deck and tell you whether a composite resurfacing makes sense.
Most composite deck projects in the Marietta area take about 1 to 3 weeks of on-site construction once the permit is approved, depending on size, railing style, and any added features like lighting or built-in seating. We will give you a specific schedule before work begins.