Techo-Bloc vs. Belgard vs. Cambridge in Clarkston, GA: 3 Paver Lines Compared

Five tests decide whether a paver line belongs around a 40-year-old Clarkston pool, and none of them is the photo in the showroom catalog. Techo-Bloc, Belgard, and Cambridge each win some of those tests and lose others. The line that fails the test your yard cares about most is the wrong line, no matter how good its sample board looks.

Here are the five, in the order we check them on every deck bid we write east of I-285. One: is the color all the way through the unit, or only in a face-mix layer on top? Two: which thicknesses does the line actually stock, and does it make a matching coping or bullnose piece for the pool edge? Three: what slip-resistance data will the manufacturer put in writing for a wet, barefoot surface? Four: how long does a pallet take to reach a job in Metro Atlanta? Five: will you be able to buy the same color and size in year 12, when a tree root or a plumbing repair forces you to pull up forty square feet?

We are not a dealer for any of the three, and we hold no manufacturer certification from any of them. We lay whichever line fits the yard and the budget, and that neutrality is the point of this post. What follows is a material-by-material breakdown for Clarkston homeowners in Lake Capri, Idlewood, Brockett, and the Sycamore Drive corridor who are replacing a cracked broom-finish deck around an original-era pool and want to spend the money once.

First, some context. Clarkston is a renovation market. The typical pool here went in during the late 1960s or 1970s, and the deck around it has been patched, overlaid, or pressure-washed down to aggregate. When you replace that deck, you are not choosing a paver for a blank lot. You are choosing one that has to sit next to old coping, tie into an existing patio, handle hard DeKalb County water splashing out of the pool, and still be buyable when the next repair comes. That changes which features matter.

The Five Tests, and Why Clarkston Yards Weight Them Differently

Every paver brand publishes the same kind of brochure: a hero shot, a color chart, and a line about exceeding ASTM C936, the standard for interlocking concrete pavers. It sets minimums for compressive strength, water absorption, and freeze-thaw durability. All three of these manufacturers meet it on their interlocking products. Treat that as the entry ticket, not a reason to pick one brand over another. The real differences are in the details the brochure skips.

Color-through versus face-mix

A color-through paver is pigmented through its full depth. A face-mix (two-layer) paver has a dense top layer, usually a quarter inch to a half inch thick, made with finer aggregate and most of the pigment, bonded to a coarser base layer. The fine top layer gives sharper color and better stain resistance. The tradeoff shows up when that top layer gets worn through, chipped by a dropped equipment lid, or cut by a pressure-washer tip held too close. Then you see gray base material. On a pool deck, where people drag lounge chairs and slide pool covers across the surface every season, that matters.

Thickness and matching edge pieces

A standard patio paver is 60 mm (about 2 3/8 inches) thick. That is plenty for foot traffic around a pool. The 80 mm versions exist for driveways and for decks that double as an equipment path during future work. On a renovation, edge pieces are the bigger question. If a line makes a bullnose coping unit in the same color family as its field paver, you can replace old poured coping and the deck in one pass. If it doesn’t, you end up mixing brands at the most visible line in the yard.

Slip data you can actually hold them to

Salespeople often get this one wrong. The Interlocking Concrete Pavement Institute, which merged into the Concrete Masonry and Hardscapes Association in 2022, publishes installation guidance and runs the installer certification program. It does not stamp a slip rating on individual paver colors. When someone tells you a line is “ICPI slip-rated,” ask for the actual number: a wet dynamic coefficient of friction (DCOF) or a wet pendulum reading for that specific texture. A tumbled or shot-blasted face will test differently from a smooth face made by the same manufacturer.

Lead time and replacement availability

These last two tests are where Clarkston differs from a new subdivision in north Forsyth. DeKalb County Planning & Sustainability at 178 Sams St. in Decatur already adds time: residential pool and deck permits there take roughly three to four weeks, versus ten to fourteen days in Gwinnett. You do not want a six-week wait for pallets on top of a four-week permit. And because your house is already 50 years old, you are more likely than a new-build owner to pull up pavers later for plumbing, a bonding upgrade, or a drain cover replacement. The unit you buy today has to be buyable then.

Techo-Bloc on a Clarkston Pool Deck: Texture First, Freight Second

Techo-Bloc is a Canadian manufacturer, and its reputation rests on surface texture. Its slab lines, the Blu family in particular, come in 60 mm and 80 mm versions, with finishes that read like natural stone rather than molded concrete. If you want a deck that looks like cut limestone or weathered travertine from ten feet away, Techo-Bloc is often the first line designers reach for. One look at a sample board shows why.

That texture helps around water. A slightly textured, stone-like face gives bare feet more grip than a smooth, satin face, and Techo-Bloc offers several of its popular slabs in more than one finish. When we spec a Techo-Bloc slab for a pool deck, we choose the textured finish over the smooth one every time. We also ask the distributor for wet-slip data on that exact finish before the order goes in.

Surface construction depends on the product. Some Techo-Bloc units carry color deep into the body; others rely on a surface treatment and a dense top layer. Don’t assume. Ask the distributor for the spec sheet on the specific SKU and look for the words “through-body” or “face mix.” DeKalb water runs around 110 to 140 ppm hardness, so white calcium spots from splash-out are a bigger problem on a Clarkston deck than in Gwinnett. The acid-based cleaners that remove those spots are harder on a thin colored surface than on a through-body unit.

Freight is the weak spot. Techo-Bloc product generally ships to Georgia distributors from plants outside the state, so what’s on a local yard’s shelf is what you can get quickly. Popular 60 mm colors usually arrive within a week or two. A less common color, a large slab format, or matching coping in a specific finish can take three to six weeks if it isn’t already in Atlanta. For a Clarkston job, that means we confirm stock the same week the permit application goes to Decatur, not after it comes back.

On replacement availability, one Techo-Bloc habit is worth knowing. The company refreshes its catalog regularly, retiring colors and reshaping collections. A color you install in 2026 may not exist in 2036. Our standing rule on every Techo-Bloc job is simple: order 5 to 8 percent overage and store the extra units on a pallet, off the ground, somewhere dry.

Belgard: The Regional Supply Argument

Belgard is the hardscape brand of Oldcastle, part of the building-materials giant CRH. That parent company is the source of Belgard’s biggest edge in Metro Atlanta: a broad production and distribution network across the Southeast, and a long list of dealers. When a Clarkston homeowner asks which line we can get fastest, Belgard is often the answer. In a county where the permit already takes three to four weeks, that saves real money on the schedule.

Belgard’s range is wide. It covers budget-friendly tumbled pavers, large-format slabs, and porcelain pavers. If you consider porcelain, get its wet-use slip rating on paper, because it grips only as well as its finish. For a pool deck, the concrete slab and paver lines are the usual picks, sold in 60 mm with 80 mm options in driveway-rated collections. Belgard also makes pool coping units, which helps on renovations where the old poured coping is cracked and the whole edge has to be replaced along with the deck.

Surface construction varies by collection. Several Belgard lines use a finer, pigment-rich top layer over a base mix; others are pigmented through. As with Techo-Bloc, the only reliable answer is the spec sheet for the product you are actually ordering. We ask because face-mix pavers around a pool need a slightly different maintenance plan: no aggressive pressure-washer tips, no wire brushes, and a gentler cleaner for the white mineral haze known as efflorescence.

For long-term replacement, Belgard’s size helps. Core colors and standard sizes in its high-volume lines tend to stay in the catalog for years. Specialty colors and limited collections do not always last. Our advice is the same one we give Techo-Bloc buyers: keep an overage pallet, write the product name, color, and lot number on the delivery ticket, and file it with your house records.

Cambridge: ArmorTec and the Northeast Supply Chain

Cambridge Pavingstones is a family-owned manufacturer based in New Jersey, and its signature feature has a trademarked name: ArmorTec. That is Cambridge’s face-mix surface, a dense top layer of fine aggregate and pigment that the company markets for color retention and stain resistance. Cambridge is open about the two-layer construction, which is exactly the kind of transparency you want when comparing lines.

On a pool deck, ArmorTec’s dense surface is a real plus. It resists stains from sunscreen, from tannins dropped by overhead oaks, and from the grill grease that lands on decks near an outdoor kitchen. It also gives crisp, even color. The tradeoff is the same one every face-mix paver carries: chip a unit deep enough and you see the base layer. That’s why we steer Cambridge buyers toward textured and tumbled units, where a chipped edge blends into the finish instead of standing out against a smooth face.

Cambridge sells a broad set of pavers and wall systems, including seat-wall kits, pillar kits, and coping pieces. That makes it easier to get the deck, walls, and columns from one line in matching colors. Cambridge paver collections are generally about 6 cm thick, with thicker units in select products.

Supply is Cambridge’s weakest point in Georgia. Its manufacturing and its deepest dealer network are in the Northeast and Mid-Atlantic. Metro Atlanta dealers carry it, but any given yard usually stocks fewer options than it does for a brand with plants in the region. Special-order colors can take four to six weeks, and freight makes up a larger share of the delivered cost. With a three-to-four-week DeKalb permit window, we treat Cambridge as a line to order early, not one to decide on late.

Replacement availability is a strength. Cambridge tends to keep its core shapes and colors in production for a long time, so you can often special-order a matching unit years later even if your local yard doesn’t stock it. Keep the overage pallet anyway. Every concrete paver changes color as it weathers over a decade. Spares that aged under the same sun match far better than fresh stock.

Side by Side: Slip Resistance, Thickness, and Lead Time

Lining up the three brands on the tests that matter around a pool gives a clearer picture than any brochure. Collections vary within each brand, so the final answer always comes from the data sheet for the exact product you order.

• Surface construction: Cambridge uses its ArmorTec face-mix layer across much of its range. Techo-Bloc and Belgard vary by collection, with a mix of through-body and top-layer products. Ask for the SKU spec.
• Thickness: All three sell 60 mm (6 cm) units for foot traffic, which is all a pool deck needs. All three offer thicker units in select collections for areas that carry vehicles.
• Pool-edge pieces: All three make coping or bullnose units in some colors. Before you commit, check that the coping matches the specific field color you picked.
• Wet-slip data: None of the three carries a blanket slip rating from ICPI or CMHA, because no such rating exists. In every line, textured and tumbled finishes grip better than smooth ones. Ask for a wet DCOF or pendulum test.
• Metro Atlanta lead time: Belgard is typically fastest thanks to regional supply. Techo-Bloc is quick for stocked colors and slower for slabs and specialty finishes. Cambridge is usually slowest for anything the yard doesn’t already have.
• Long-term color availability: Core colors in the Cambridge and Belgard lines hold steady. Techo-Bloc refreshes its catalog more often.

Slip performance gets one more paragraph because this is where homeowners get burned. The finish that looks most elegant in a showroom is often the smoothest, and smooth faces turn slick when they’re wet and dusted with pollen, which in Clarkston describes most of April. On pool decks, stair treads, and the first three feet around the water, choose a textured, tumbled, or shot-blasted finish. Save smooth finishes for covered dining areas.

Freeze-thaw matters less here than up north, but it isn’t zero. Clarkston sees roughly 8 to 14 freeze events a winter. All three lines pass the ASTM C936 freeze-thaw test, so the paver itself is rarely what fails. The base and the drainage are, no matter whose logo is on the pallet.

Buying for Year 12: Replacement Units in a DeKalb Renovation Market

Here is the scenario we plan for on every Clarkston deck. It is 2038. The original copper return line under the deck finally leaks, or new work triggers a bonding upgrade, or a willow oak root heaves one corner. We need to pull up sixty square feet of pavers, fix what’s underneath, and put the deck back so nobody can tell where we worked. Whether that repair disappears depends on decisions made in 2026.

Three habits make it work, whatever the brand. First, buy the overage and keep it. Second, record the manufacturer, collection, color, size, and production lot, both on paper and in a photo of the pallet tag. Third, favor a paver pattern that is easy to rebuild. Running bond and simple modular blends go back down easily. Complex multi-size patterns with custom cuts around curves are harder, which matters on curved decks like several pictured in this post.

Clarkston’s ground conditions give you one more reason to plan for access. Lots near the Stone Mountain granite dome can hit decomposed granite at 4 to 8 feet down, and the older 1960s and 1970s lots along Indian Creek Drive and Brockett Road have thin topsoil over Cecil-series clay. Utilities under old decks were rarely mapped. Pavers are one of the few deck surfaces you can lift and reset without demolition, but that advantage only holds if you can still match the units.

This is where the brand choice finally narrows. If you want the most distinctive, stone-like surface and don’t mind storing a generous overage pallet, Techo-Bloc makes sense. If schedule and local support come first, and you want the widest dealer network for future repairs, Belgard is the practical pick. If you want a dense, stain-resistant surface and a long-running catalog, and you can order early, Cambridge earns its spot. All three will outlast the deck they replace.

No brand can make up for a bad base. The brand decides how the deck looks and how easy it is to repair. The compacted gravel base, the edge restraint, and the drainage decide whether you ever need that repair. On a Clarkston renovation, that hidden layer is where the money should go.

When you meet with any installer, bring five requests: the SKU spec sheet showing color-through or face-mix, the thickness and matching coping for your color, written wet-slip data for the exact finish, a confirmed delivery date that fits the DeKalb permit timeline, and an overage quantity written into the contract. An installer who can answer all five without looking anything up has done this before.