Building a paver walkway and front steps

How wide a walkway should be

A front walk that two people can use side by side needs to be about 4 feet wide. That is the width we lay out for most main entry walks. It lets two adults walk together, leaves room to carry groceries or a stroller, and looks in proportion to a typical colonial or split-level front door.

A 3 foot walk works for one person at a time, so it suits side paths to a gate, a trash area, or a back door. Anything narrower than 3 feet feels tight once plants grow over the edges, and snow shoveled off a narrow walk piles up against the edges and gets tracked back on.

Where the walk meets the driveway or the front steps, we usually widen it into a landing. A landing of 5 feet or more at the bottom of the steps gives people room to stop, turn, and step off to the side. It also gives the snow shovel somewhere to go.

Base depth and why clay matters

Pavers are only as flat as the base under them. Paver manufacturers such as Unilock call for 4 to 6 inches of compacted aggregate base for pedestrian walkways, with a 1 inch bedding layer on top. On the heavy clay common in Rockland and Bergen, we build toward the deeper end of that range, because clay holds water and moves when it freezes.

The base goes down in lifts of 3 to 4 inches, and each lift is compacted with a plate compactor before the next one goes on. Unilock notes that most plate compactors will not compact more than about 4 inches at a time, so dumping 6 inches of stone and running the machine once leaves a soft layer at the bottom that settles later. On clay subgrade we put down a geotextile fabric first, which keeps the stone from pushing into the mud over time.

The base also extends past the edge of the pavers by about the same distance as its depth. A 6 inch base gets roughly 6 extra inches of excavation on each side. That extra width is what supports the edge restraint and keeps the outside row of pavers from rolling outward.

The walk needs to pitch so water runs off it. A slope of 1 to 2 percent, which is about 1/8 to 1/4 inch per foot, is enough. We pitch the walk across its width or along its length toward the lawn, away from the house, and never toward the foundation. The cost side of base work is covered in our paver patio cost guide.

Edge restraint

Every paver walk needs a restraint along both edges. Pavers stay locked together because the joint sand and the edges hold them tight. Without a restraint, the outer rows creep outward a little every freeze-thaw cycle, the joints open, and the walk starts to look wavy within a few years.

The common options are plastic or aluminum paver edging spiked into the base, or a concrete toe troweled along the outside edge below the finished grade. We use spiked edging on most walks and a concrete toe on curves where edging is hard to bend. In both cases the restraint sits on the compacted base, not on loose soil, and it is covered with topsoil and sod or mulch so it is not visible.

Where a walk runs between a lawn and a planting bed, the restraint also acts as the line the landscaper edges to. That keeps mulch and soil from spilling onto the pavers and keeps grass from growing into the joints.

Step dimensions and the residential code

The International Residential Code, section R311.7, sets the limits for stairs at a house. The maximum riser height is 7 3/4 inches and the minimum tread depth is 10 inches. Risers within one flight cannot vary by more than 3/8 inch from the tallest to the shortest, and treads have the same 3/8 inch limit. Those rules exist because a person's stride adjusts to the first step, and a step that is a little higher or shorter than the rest is the one people trip on.

Front steps built to the code maximum feel steep outdoors. For landscape steps we usually aim for risers around 6 inches with deeper treads, often 12 to 16 inches, which matches the longer stride people take outside. A common layout check is that two risers plus one tread should come to about 24 to 26 inches. A 6 inch riser with a 14 inch tread lands in that range.

Before any steps are laid out, we measure the total rise from the walk to the door threshold or landing, then divide it into equal risers. If the total rise is 30 inches, that is five 6 inch risers. The top step should sit an inch or so below the door threshold so water does not run toward the door. Steps are laid out so the last riser is the same height as the others, which usually means adjusting the grade at the bottom rather than cutting one short step.

Towns in New York and New Jersey adopt the residential code with their own amendments, and some front steps count as part of the house for permit purposes. We check with the local building department before we build steps to an entry door.

Block steps vs stone slab treads

Paver block steps are built from segmental wall block or step units stacked on a compacted base, with a cap or paver tread on top. The units are glued together with concrete adhesive and the treads overhang the riser slightly. Block steps match a paver walk, the units are a consistent height so risers come out even, and a damaged cap can be replaced without rebuilding the whole step.

Stone slab treads are single pieces of natural stone, often bluestone or granite, set on a block or stone riser. A single slab tread has no joints for water to get into, it looks heavier and more permanent, and a thick slab spans the full width of the step. The tradeoff is weight and cost of material. A 5 foot slab tread needs a machine to set, and natural stone varies in thickness, so each slab has to be shimmed and set to hit the riser height.

Either way, the steps sit on the same compacted aggregate base as the walk, dug deeper under the bottom step. A step unit set on soft or unevenly compacted soil will rock or tilt within a winter. Where new steps meet an existing concrete stoop or the house foundation, we leave a separation joint so the steps and the house can move independently when the ground freezes.

Handrails

IRC section R311.7.8 requires a handrail on at least one side of each flight of stairs with four or more risers. The handrail height is 34 to 38 inches, measured from the nosing of the treads. So a front entry with three risers does not trigger the code handrail, and one with four or more does.

Local code can be stricter, and some towns read the rule differently for exterior steps that are not attached to the house. We check the local code for each job. Even where a rail is not required, we recommend one for steps used in winter or used by anyone with a bad knee or a cane.

Rails are anchored with posts core drilled into the step units or set in their own footings beside the steps. Posts set in their own footings go below the frost line, which is about 36 to 42 inches here, so the rail does not heave out of line.

Drainage and winter salt

Water is what ruins a walkway. A walk that holds a puddle will freeze into an ice patch and push the base up where the water soaks in. Every walk we build is pitched to shed water, and downspouts that empty onto or next to the walk get redirected into solid pipe. Where a walk runs along a low side of the house, we may add a small drain beside it. That work is part of our drainage and excavation service.

Concrete pavers handle deicing salt better than poured concrete because they are denser. Use plain rock salt or calcium chloride, and use it sparingly. Avoid products that contain ammonium nitrate or ammonium sulfate, because they attack concrete. Shovel first and salt second, so the salt is working on a thin layer of ice instead of dissolving a pile of snow.

Natural stone treads, bluestone in particular, can flake at the surface with heavy salt use. On stone steps we suggest sand or a stone-safe ice melt. Salt residue on pavers washes off in spring rain, and a white haze on new pavers in the first year is efflorescence from the concrete, not salt damage, and fades on its own.

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