How Much Paver Edging Do I Need?

Required edging starts with the length assigned to the selected restraint system, not automatically the entire perimeter. Map every boundary, identify suitable structural restraints and total the open edges needing the product you intend to buy.

Make an edge schedule

Label perimeter runs on the sketch and record length, edge condition and proposed system. A closed patio with all sides exposed may need manufactured restraint around its full perimeter. A patio against a suitable curb or structure may use that boundary instead, where the construction detail establishes effective restraint.

An adjacent wall is not automatically valid confinement: verify stability, contact and the specified edge detail. Transitions to another pavement may require their own restraint. Divide the perimeter into separate product orders if it uses concrete curbs, flexible edging and structural boundaries in different places.

Work through a rectangular example

Illustrative geometry: a 20 × 15-foot patio has perimeter 2 × (20 + 15) = 70 ft. If one 20-foot boundary is effectively restrained by a suitable existing structure, the remaining manufactured-restraint length is 50 ft.

Suppose the selected product has a verified usable piece length of 8 ft. At zero allowance, 50/8 = 6.25, rounded up to 7 pieces. If you choose an 8% length allowance, 54/8 = 6.75, also 7 pieces. A chosen allowance does not always change a whole-piece order.

The 8-foot package and 8% allowance are example inputs, not standards. Product overlap, connectors and separate short runs may reduce usable coverage or create offcuts that cannot be shared.

Measure curves and discontinuous runs

For a true circle, circumference is 2πr; a semicircular arc is πr, with its straight diameter added only if that edge also needs restraint. For freeform curves, measure the restraint’s intended path rather than its bounding rectangle.

Do not count internal seams between measured area sections as exterior edges. A multi-section patio’s area can be added easily while its exposed perimeter still needs a separate boundary trace.

For multiple disconnected runs, check whether rounding each run separately is appropriate. Two pieces that cover a continuous length on paper may not span separate edges when cuts cannot be reused.

Convert to the actual package

Selected product length = sum of assigned restraint runs
Planning length = selected length × (1 + user-chosen allowance)
Pieces or rolls = round up [planning length ÷ verified usable package length]

Use roll length for rolls and piece length for rigid strips. Confirm connectors, corner components and any required overlaps. Keep those fittings on separate purchase lines.

Add fasteners only where the system uses them

Use the manufacturer or project detail for attachment type and spacing. End anchors, corners and separate runs can change a spacing-based count. Do not assume every restraint uses spikes, or that packages contain a universal number of fasteners. The restraint types guide explains those distinctions.

Enter the selected restrained length in the Paver Edging Calculator. Supply the actual piece or roll length and any applicable attachment data, then compare the estimate with the edge schedule before purchasing.