How Much Geogrid Do I Need for a Driveway?
Rough numbers, honest overlap allowances, and how to pick the right SKU. If you can measure a driveway with a tape, you can size the geogrid order.
The Math in One Step
Multiply length by width to get the driveway square footage. Divide by 9 to convert to square yards. Add 10% for overlap at seams. That's your geogrid order.
Driveway length × width = ft²
÷ 9 = yd²
× 1.10 (overlap) = geogrid yd² you need
Example: a 100 ft × 12 ft driveway = 1,200 ft² = 133.3 yd² = 147 yd² of geogrid with overlap.
Tensar NX850 Roll Sizes We Stock
For residential driveways we stock Tensar InterAx NX850 in partial rolls sized for typical residential jobs. Full-roll dimensions come straight from the Tensar PIDS spec — the partial widths are cut from the same 12.5 ft standard roll.
| Format | Dimensions | Coverage |
|---|---|---|
| Quarter roll | 12.5 ft × 49.25 ft | 68.5 yd² |
| Half roll | 12.5 ft × 98.5 ft | 137 yd² |
| Standard (full) roll | 12.5 ft × 197 ft | 274 yd² |
We keep half and quarter rolls in stock at our Solon warehouse for pickup. Full-roll orders are quoted by phone. Text your driveway dimensions to (440) 384-1897 and we'll tell you which format fits.
Real-World Sizing Examples
NX850 rolls are 12.5 ft wide. Strips run along the driveway length. Figure out how many strips you need (width ÷ 12.5, round up), multiply by driveway length, and match to the closest partial-roll length.
Short suburban driveway
40 ft × 10 ft — 1 strip × 40 linear ft
1 quarter roll (49.25 ft available). Leftover ~9 ft.
Standard residential driveway
80 ft × 12 ft — 1 strip × 80 linear ft
1 half roll (98.5 ft available). Leftover ~18 ft.
RV / boat pad
40 ft × 20 ft — 2 strips × 40 linear ft = 80 linear ft
1 half roll covers both strips.
Long rural driveway
150 ft × 12 ft — 1 strip × 150 linear ft
1 half + 1 quarter roll (147.75 ft available). Text us — larger jobs get a phone quote.
Or skip the math — use our driveway calculator, enter your dimensions, and it recommends the exact partial-roll combination.
Why NX850 for Residential Driveways?
For residential driveways and pads we stock Tensar InterAx NX850 in partial-roll formats — the current-generation top-of-the-line multi-axial geogrid. The design values for NX850 come straight from the Tensar 2025 Subgrade Pocket Card, so our driveway calculator matches exactly what a Tensar engineer would spec.
For commercial, DOT, and heavy-duty applications we also carry the rest of the Tensar lineup — NX650, NX750, TriAx TX190L, and the H-Series. Call us and we'll walk through the right SKU for your job with a Tensar+ engineered design.
Don't Forget the Fabric
If your subgrade is soft, wet, or heavy clay (typical for most of Northeast Ohio), you also need a woven geotextile below the geogrid to stop the soil from pumping up into your aggregate. Size the fabric the same way — square yards + 10% overlap — and buy Mirafi 500X or 600X.
Skip the Math — Use the Calculator
Enter your driveway dimensions and subgrade type, get an itemized material list and total cost.