Patio Construction

The base under the surface does the real work

Pavers and stone get the attention, but a patio is mostly a hole in the ground filled correctly. Topsoil and organic material come out because they compress and rot. What is left is checked: sandy soil drains well, while the clay common in parts of Massachusetts holds water and heaves when it freezes. That decides how deep the excavation goes and if a fabric layer is needed to keep the base from mixing with the soil below.

The base is crushed stone placed in thin lifts and compacted each time with a plate compactor. Dumping it all at once and compacting the top leaves soft layers underneath that settle in a year or two, which is where the dips and rocking pavers on most old patios come from. On top of the base goes a screeded bedding layer for pavers or stone, or the formed slab for concrete.

The edges matter as much as the middle. Pavers need a restraint along every open edge so they do not creep outward over time, and stone set at the edge of a lawn needs the base carried past the surface so the border does not tip.

Base depth also depends on what the patio carries. A patio that will hold a grill island or the occasional car gets a deeper base than one meant for a table and chairs.

Grading water away from the foundation

A patio is a large hard surface right against the house, and every inch of rain that falls on it goes somewhere. Built flat or sloped the wrong way, it sends that water toward the foundation, and a basement that was dry for years starts taking water. We set the patio with a steady slope away from the house, enough to drain without making furniture feel tilted.

Before we lay it out we look at the whole path the water will take: downspouts that currently empty where the patio will go, low spots in the yard, the neighbor's lot and any existing drainage. Downspouts can be piped under the patio to an outlet away from the house. If the yard itself drains toward the house, that gets addressed in the grading, not left for the patio to fight.

The finished patio surface also needs to sit below the siding and sill of the house, with the foundation exposed between them, so splashback and snow do not keep the bottom of the wall wet.

At the end we walk the patio with you and go over the joint sand, sealing and what the surface needs through the winters.

Pavers, natural stone and poured concrete

Concrete pavers are the most forgiving in a freeze-thaw climate. They flex slightly as a system, the joints let water through, and a single damaged paver can be lifted and replaced. Joints are swept with polymeric sand that hardens to resist weeds and washout. Natural stone, bluestone, granite or fieldstone, suits older New England houses and looks right next to a stone wall, and it needs a careful base because thinner pieces crack if the bedding is uneven.

Poured concrete gives a clean, continuous surface and can be stamped or finished with texture. It needs control joints placed so cracks form where they are meant to, air-entrained concrete for freeze-thaw, and care with deicing salt, which attacks the surface. On the South Coast and the Cape the salt air and sandy soils shape the choice as well.

We bring samples and show you how each material looks against your house and how it ages, so the decision is yours and made with real information.

Walkout and step-down patios

Many houses do not sit on a flat lot. A walkout basement opens onto lower ground on one side, and a patio there needs to meet the basement door at the right height while the grade around it is held back. That can mean a low retaining wall, stone steps up to the yard and drainage behind the wall so water does not build pressure against it.

A step-down patio is the other common case: the house door or an existing deck sits above the yard, and the patio sits below with steps between them. The steps need the same rise on every tread, a tread deep enough to stand on comfortably and a landing at the door. Mixing a deck and a patio this way is often the best answer for a sloped yard, and the two are laid out together so the levels work.

Retaining walls above a certain height are engineered structures, and some towns require a permit or an engineer's design for them. We tell you at the layout stage if a wall is heading into that range, and shape the grading to keep walls low where we can.

Fire pits, seat walls and built-in planters are often part of a step-down patio. They are planned into the base and the drainage from the start, not cut into a finished patio later.

How a patio is staged in your yard

Before any digging, utilities are marked through Dig Safe, and we ask about irrigation lines, invisible dog fences and buried wiring that the marking does not cover. We plan how equipment reaches the back yard, protect the lawn along that route with mats where needed and agree on where materials will be stockpiled.

You get a written scope that covers the excavation depth, base, surface material, edging, drainage work and steps or walls. Ground-level patios often need less permitting than structures, but retaining walls, work near wetlands under the local conservation commission and anything in a historic district can bring reviews, and we check before we start. During the job you hear from us about what is done and what we found in the ground. When it is finished, disturbed lawn is raked and seeded, and the site is left clean.

Steve or someone from our team is your contact throughout, and you hear from us about what was done each day and what is next. Weather affects patio work more than most, because a base cannot be compacted properly when it is saturated, so if rain stops us we tell you that day and adjust rather than pushing through. At the end we walk the patio with you and go over the joint sand, sealing and what the surface needs through the winters.

See the rest of our exterior work, or browse the gallery for rooms we have finished.