Patios and walkways live and die by what is under the surface, not what is on top. Outdoor paver projects fail mostly because of inadequate base preparation, not because of the paver itself. Get the base right and a $4 per sq ft concrete paver will outlast a $20 per sq ft natural stone laid on bad gravel.
Paver Material Options
Concrete pavers dominate the residential market. They are manufactured by Belgard, Pavestone, Techo-Bloc, and Unilock, with compressive strengths of 8,000 to 12,000 psi. Standard thickness is 60 mm for patios and walkways, 80 mm for driveways. Pricing runs $2.50 to $7 per sq ft for the pavers themselves.
Brick pavers are kiln-fired clay with the same dimensions as common building brick (typically 4×8 inches by 2.25 inches thick). Pine Hall Brick and Whitacre Greer are the major US producers. Pricing sits at $4.50 to $9 per sq ft. Brick weathers to a softer tone over the years and never fades because the color goes all the way through.
Natural Stone and Porcelain
Bluestone, travertine, and limestone make up most natural stone paver sales. Pennsylvania bluestone runs $6 to $14 per sq ft for thermal-finish 24×36 inch pieces. Travertine is $4 to $8 per sq ft, lighter in color, and naturally non-slip due to its porous surface. Both need annual sealing in freeze-thaw climates.
Porcelain pavers, a newer category, measure 20 mm thick (about 3/4 inch) and come in 24×24 inch and 24×48 inch formats. Brands like Florim and Daltile offer porcelain at $7 to $12 per sq ft. They install on pedestals over rooftops, on grass via sand-set methods, or with thinset over concrete. DCOF ratings consistently exceed 0.42, meeting ADA wet-area slip requirements.
Base Preparation: Where Projects Live or Die
For a patio, the base needs to be 6 inches of compacted 3/4-inch crushed stone (called “crusher run” or “DGA”) topped with 1 inch of concrete sand. For a driveway, increase the gravel base to 10 to 12 inches. Compaction every 2 inches of fill with a vibratory plate compactor (a Wacker Neuson VP1135A rents for $90 a day at Home Depot) prevents settling.
Grade the base to slope away from the house at 1/4 inch per foot — that is 2 inches over 8 feet. Pavers themselves shed water through joints, but a flat or back-sloped patio still channels surface water against your foundation. Mark elevation with stakes and string before any gravel goes down.
Step-by-Step Installation Outline
- Excavate 8 to 14 inches below finished grade depending on paver thickness and base depth
- Install edge restraints temporarily, set perimeter strings to mark slope and elevation
- Lay 4 oz non-woven geotextile fabric over the soil to prevent base migration
- Add crushed stone in 2-inch lifts, compacting each lift with a plate compactor
- Screed 1 inch of concrete sand to a uniform thickness using 1-inch EMT conduit as screed rails
- Set pavers in pattern starting from a fixed corner, leaving 1/16 to 1/8 inch joints
- Cut perimeter pavers with a 14-inch wet saw (a DeWalt D24000S rents for $60 a day)
- Install permanent edge restraint with 10-inch spikes every 12 inches
- Sweep polymeric sand into joints, blow off the paver surface, then mist with water to activate
Patterns and Layout
Running bond is the simplest pattern: each row offset 50 percent from the row above. It works for any rectangular paver and forgives small layout errors. Herringbone interlocks pavers at 45 or 90 degrees, distributing loads better and resisting tire-twist movement — the go-to driveway pattern. Basket weave alternates pairs of pavers, ideal for traditional homes with brick pavers.
Random or “ashlar” patterns use multiple paver sizes to break the grid. Manufacturers like Techo-Bloc and Unilock sell coordinated random kits where ratios are pre-calculated, taking the guesswork out of how many of each size to order. A 200 sq ft patio typically uses 18 to 22 pavers per 10 sq ft depending on size mix.
Polymeric Sand vs Regular Joint Sand
Polymeric sand (Techniseal SmartSand, Alliance Gator Maxx, SRW Sweep) blends fine sand with a polymer binder that activates when wet, locking joints against weed growth and ant intrusion. A 50-pound bag covers 75 to 100 sq ft of pavers and runs $30 to $45. Regular joint sand is cheaper at $8 per bag but allows weed and insect activity.
The application is critical. Sweep the polymeric sand dry into bone-dry joints, blow excess completely off the paver surface with a leaf blower, then mist with a fine spray nozzle. Any sand left on the paver surface during watering will haze the surface with a polymer residue that is hell to remove later.
Costs for a Real Project
A 300 sq ft DIY paver patio with mid-range concrete pavers runs $1,500 to $2,400 in materials including base stone, sand, edge restraints, and polymeric sand. Tool rentals add $200 to $300. Installed by a contractor, the same project costs $4,500 to $7,500. The DIY savings are real if you have a weekend and a strong back, but the work is more physical than most homeowners expect.
Maintenance Over the Long Term
- Pressure wash with a 25-degree nozzle at 1,500 to 2,000 psi every 2 to 3 years
- Reseal concrete pavers every 3 to 5 years with a penetrating sealer like SRW Paver Sealer
- Reapply polymeric sand any time joints drop more than 1/8 inch below paver surface
- Spot-replace cracked or stained pavers — most colors stay available for 10+ years
- Address settling within the first year by pulling affected pavers and re-screeding sand
A well-built outdoor paver patio can hold up for 25 to 30 years with minor maintenance, longer than poured concrete and far longer than stamped concrete. The investment in proper base preparation is the single best decision in the whole project.
Drainage and Edge Restraint Details
Even with proper slope, large paver installations benefit from a perimeter French drain in heavy-clay or low-lying lots. A 4-inch perforated pipe wrapped in landscape fabric, buried alongside the patio edge in a gravel trench, carries away water that would otherwise undermine the base over years of freeze-thaw cycles. Add this for under $300 in materials at the time of install rather than excavating later.
The edge restraint deserves the right hardware. Snap-Edge and Pave-Tech rigid PVC edging at $2.50 to $4 per linear foot holds pavers in place against lateral movement from grass mowers, snow plows, and freeze-thaw. Spike with 10-inch galvanized landscape spikes every 12 inches into compacted base. Cheaper plastic edging from big-box stores often warps in summer heat and lets pavers drift within the first year.
