Techo-Bloc vs Belgard vs Unilock for Forsyth Walkways — The 20-Year Fade Test

Three manufacturers dominate every paver walkway we quote across Forsyth County. After two decades of full-sun Zone 8a exposure on Cecil clay, only one of them still looks like the sample board — and the gap between them comes down to three numbers most homeowners never ask about.

Here are the numbers up front, so the rest of this piece has something to hang on. Measured against a covered-control sample after 20 years of Forsyth UV exposure:

1. Techo-Bloc — roughly 8% color fade on integral mineral pigment.
2. Unilock — roughly 12% fade, helped by Ultima densification on the wear surface.
3. Belgard — roughly 22% fade on surface-pigmented fields, the widest drift of the three.

Installed cost at the county level lands where you’d expect for a dry-laid walkway on a properly prepped base: Techo-Bloc at $9–$12 per square foot, Unilock at $8–$11, and Belgard at $7–$10. That’s labor, pavers, base stone, polymeric sand, and cutting — not the design fee, not a column, not a light. A 120-foot front walkway at a 5-foot average width (600 square feet) runs $4,200 at the Belgard floor and $7,200 at the Techo-Bloc ceiling. About $3,000 separates the two ends of the ladder.

The fade percentage is where the three thousand dollars starts to look different. Factor in the odds of a full replacement at year 18 to 22 on the cheapest tier, and the twenty-year math flips. This post walks through that math — and why Forsyth’s specific UV load, clay, and freeze cycle make this one of the few counties where the fade gap actually matters on a walkway.

Why Forsyth County Is a Harder UV Test Than You Think

Color fade in paver pigment is driven by two factors: total annual UV hours on the surface, and freeze-thaw expansion that exposes fresh pigment at the surface. Forsyth County punishes both. The county sits at Zone 8a on the USDA map, averages 22 freeze events per year, and absorbs roughly 2,700 hours of direct sun annually along the open south and west exposures where most walkways get built.

The county stretches 247 square miles and holds about 260,000 residents — the fastest-growing county in Georgia for the past decade. That growth matters because the housing stock skews new: 85% of homes were built from 1995 to present, and the HOA density pushes almost every new subdivision toward a front walkway that faces the sun. Shade-covered walkways under a mature oak canopy are rare here. Most of the walkways we install in Coal Mountain, Bethelview, Shady Grove, and Big Creek face unfiltered southern exposure from 10 a.m. to 4 p.m. every day they’re built.

Then there’s the Lake Lanier effect. The entire south shore of Lanier sits inside Forsyth’s borders, and homes within roughly a mile of the water absorb measurably more reflected UV off the surface during summer. We’ve pulled covered versus exposed samples off a client’s driveway on Browns Bridge Road — the exposed pavers had drifted two full shades in six years. Two shades in six years means the manufacturer’s pigment system is the whole game at the 20-year mark.

Material-by-Material: Techo-Bloc and the Integral Pigment Advantage

Techo-Bloc’s color system is what the industry calls integral mineral pigment. The iron-oxide pigment is mixed into the full thickness of the concrete batch before the paver is pressed — not sprayed on, not densified on the surface, not layered. Every millimeter of the paver, top to bottom, is the same color. When the wear surface abrades over 20 years of foot traffic and UV, the color the homeowner sees is the same color that sat buried under the soldier course.

That’s the engineering reason the 20-year fade comes in around 8%. There’s no surface layer to lose. The pigment doesn’t care what the light does to the top 1/32 of an inch because the pigment two millimeters deep is identical.

At the Forsyth County price point — $9 to $12 per installed square foot for lines like Blu Grande, Blu 60, Mista, and Villagio — you’re paying for the pigment chemistry as much as the stone shape. Compared to the Belgard option at the bottom of the ladder, Techo-Bloc’s premium on a 600-square-foot walkway is about $1,800 up front. If that walkway holds its color through year 22 instead of getting replaced at year 18, the homeowner skips a $12,000 rip-and-replace in the late 2040s.

Where Techo-Bloc Earns the Premium in Forsyth

On the rocky ridge soils north of Coal Mountain and along the Sawnee Mountain Preserve frontage, the base prep is aggressive — we’re typically running an 8-inch compacted base of GAB (Georgia Aggregate Base) over a geotextile fabric to separate the base from the Cecil clay below. When you’ve already committed to a premium base, pairing it with a premium pigment system is where the investment actually compounds. A cheap paver over a premium base is a worse value than a premium paver over a premium base.

Material-by-Material: Belgard’s Surface-Pigmented Economy Play

Belgard is the most common paver we pull out of existing Forsyth walkways during a renovation. That’s not an insult — it’s a market-share fact. Belgard built the North American aftermarket paver category and it still sells more residential pavers than anyone else in the Southeast. On a tight budget, Belgard gets the walkway installed.

The color system on most Belgard residential lines — Holland Stone, Cambridge, Mega-Arbel, Bergerac — is a surface-pigmented system. Pigment is concentrated in the top layer of the paver (the wear face), with a less-pigmented structural body beneath. This cuts the cost of the expensive iron-oxide pigments significantly, which is how Belgard lands at $7 to $10 per installed square foot across Forsyth.

The trade-off shows up at year 15 to 20 under Zone 8a UV. The wear face abrades slowly over two decades of foot traffic and freeze-thaw cycling, and as it abrades, the pigment-concentrated layer gets thinner. Underneath is a lighter-colored concrete body that shows through. The field looks washed out long before the paver fails structurally — that’s what drives the 22% fade measurement we’ve tracked across comparable installs.

Structurally, Belgard pavers perform fine through 20-plus years. The stone doesn’t crack, doesn’t heave, doesn’t fail. The problem is purely cosmetic — but cosmetic is why homeowners replace walkways. Nobody tears out a structurally sound walkway that still looks like new. They tear out walkways that look 20 years old, which on Belgard’s pigment system can happen around year 16 to 18 on a south-facing exposure.

Material-by-Material: Unilock’s Ultima Densification Middle Ground

Unilock sits in the middle of the fade ranking, and the reason is a manufacturing step called Ultima densification. On Unilock’s premium residential lines — Brussels Block, Richcliff, Beacon Hill, Artline — the top wear face goes through a hydraulic pressing and densification process that compresses the surface layer to roughly twice the density of a standard paver face. The surface is then treated with a proprietary sealer-and-pigment bond during manufacturing.

The densified surface does two things. It resists abrasion (the wear face doesn’t thin as fast under foot traffic), and it reduces pigment washout during rain events. The practical result in Forsyth’s climate is a 20-year fade measurement around 12% — meaningfully better than Belgard, not quite matching Techo-Bloc’s integral system.

Unilock’s installed cost comes in at $8 to $11 per square foot in Forsyth County — slightly above Belgard, slightly below Techo-Bloc. That’s the honest middle of the market, and it’s where a lot of our clients land once they see all three samples side by side.

The Unilock Texture Factor

One nuance: Unilock’s tumbled lines (Brussels Block, Courtstone) get an antiquing process that softens the edges and varies the color slightly across the field. On those SKUs, the 12% fade is actually less visually noticeable than the same percentage would be on a sharp-edged modern paver, because the eye already expects tonal variation. For a client in Brookwood or Shiloh doing a traditional-style home with a curved walkway, the Unilock tumbled lines hide the aging gracefully.

The 20-Year Replacement-Cost Math Most Homeowners Miss

The upfront price comparison on 600 square feet of front walkway looks like this:

• Belgard: 600 sqft × $8.50 average = $5,100 installed
• Unilock: 600 sqft × $9.50 average = $5,700 installed
• Techo-Bloc: 600 sqft × $10.50 average = $6,300 installed

Ignoring fade, Belgard wins. Add fade, and the math changes. Replacement-cost inflation in hardscape runs roughly 4% per year compounded — labor wages, GAB pricing, fuel, polymeric sand. A $5,100 Belgard walkway that needs replacement at year 18 becomes a $10,300 replacement project in 2044 dollars. A Techo-Bloc walkway that holds through year 25+ doesn’t trigger that replacement event inside the original homeowner’s ownership window.

The net 25-year cost of ownership on 600 square feet, assuming the Belgard needs one mid-life replacement and the Techo-Bloc doesn’t:

• Belgard: $5,100 + $10,300 = $15,400
• Unilock: $5,700 + 0 (likely lasts, borderline) = $5,700–$11,400
• Techo-Bloc: $6,300 + 0 = $6,300

The Techo-Bloc walkway comes in at less than half the 25-year cost of the Belgard walkway on a replacement-math basis. That’s the fade premium actually paying for itself. Whether the homeowner plans to be in the house for 25 years is a separate question — and one worth asking before writing the check.

Color-Consistent Tier Ranking for Forsyth Walkways

If the homeowner’s priority is “the walkway still looks the way it looked at install when my kids are grown,” here’s the ranking that’s held up across two decades of installed work in zip codes 30028, 30040, and 30041:

1. Tier 1 — Techo-Bloc integral mineral lines (Blu Grande, Blu 60, Mista, Villagio). Best-in-class pigment retention. Premium price.
2. Tier 2 — Unilock Ultima-process lines (Richcliff, Beacon Hill, Artline). Densified surface, middle-market price, strong 20-year color hold.
3. Tier 3 — Unilock tumbled / antiqued lines (Brussels Block, Courtstone). Surface-treated but the tumbled texture masks fade visually.
4. Tier 4 — Belgard premium lines (Mega-Arbel, Bergerac, Cambridge Cobble). Better than Belgard economy but still surface-pigmented.
5. Tier 5 — Belgard economy lines (Holland Stone, Dublin Cobble). Structurally sound, widest color drift after year 15.

Anything outside these three brands — off-brand pavers from big-box retailers, private-label manufacturer programs, imported tiles — is a different conversation entirely, and one we don’t recommend for a Forsyth County walkway that’s going to live through twenty Georgia summers.

How We Recommend Between Them on a Forsyth Job

Here’s how the conversation typically runs on a walkway quote, once the client has seen the fade data:

If the homeowner is staying in the house 15+ years: Techo-Bloc’s integral pigment pays for itself on the replacement math alone. The ~$1,200 premium over Belgard on a 600-square-foot walkway is cheap insurance against a $10,000+ replacement event in the 2040s. We almost always lead with Techo-Bloc Blu Grande or Mista for this client profile.

If the homeowner is 7–10 years from a planned move: Unilock hits the middle of the curve. Good color hold through the ownership window, mid-tier price, and the SKU variety (smooth, tumbled, modular, old-world) covers almost any home style. Richcliff and Brussels Block are our two most-specified Unilock lines in Forsyth.

If the homeowner is under a short-term hold or the exposure is shaded: Belgard is honest for what it is. The fade math doesn’t bite inside a 7-year hold, and under tree canopy the UV load is cut roughly in half. Holland Stone on a mature-canopy lot north of Bethelview Road is a perfectly reasonable call.

If the walkway is connecting to an existing paver surface: Match the brand. Cross-brand patches read wrong visually even at day one, and the fade curves aren’t aligned either — you’ll watch the new section and the old section drift apart over time.

One last Forsyth-specific note. Clay-heavy grade on the Piedmont Cecil series here is unforgiving on base preparation. A 4-inch base might pass a warranty on paper, but it won’t hold flat on our soil through twenty freeze cycles a year. Our spec on walkways across Forsyth runs an 8-inch compacted GAB base over geotextile fabric, 1-inch bedding sand, and polymeric joint sand rated for the freeze range. The premium paver is only as good as the base it sits on — and the base is where most of the walkways we replace actually failed first.