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Retaining walls.

Block and natural stone, drained behind and footed below the frost line.

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What decides whether it lasts

A wall holds back water before it holds back soil

Saturated soil expands about nine percent when it freezes, and it expands against whatever will not move. That is the wall. Clean stone behind it, separated from the soil by fabric, and a pipe running out to daylight — so there is nothing back there to freeze.

Below the frost line, or it lifts

A footing poured above frost depth rises with the ground every winter and settles differently every spring. The crack usually appears in the third year, which is long enough that nobody connects it to the footing.

Batter, and why a wall leans back

A wall built plumb is already leaning forward as far as it will ever be allowed to. Set back into the hill, each course behind the one below, so the soil load pushes it into itself rather than away.

Geogrid where the height needs it

Past a certain height a wall stops being a wall and becomes a reinforced soil mass — layers of grid tied into the fill behind. Height, slope and what sits above it decide where that line falls, and it is worth being told before the block is chosen.

The five things every failure comes back to

Every wall and patio we have taken apart failed for one of these five reasons. They are most of what separates a job that looks right at twenty years from one that does not make five.

  1. A base that was built, not just levelled

    Compacted gravel, deep enough for the ground it sits in. Every course above copies the first one, and so does every mistake in it.

  2. Below the frost line

    New England ground moves in winter. A footing poured above the frost line lifts with it, and the wall on top of it cracks — not that winter, usually the third one.

  3. Somewhere for the water to go

    Saturated soil expands about nine percent when it freezes, against something that cannot move. Clean stone, fabric, and a pipe run out to daylight.

  4. Joints shaped, not just filled

    A tooled joint sheds water off the face of the stone. A joint struck flush holds it there, and held water is what freezes.

  5. A cap that sheds

    The top takes the weather and everything anyone sets on it. Pitched away, set solid, joints tight.

One-year workmanship warranty

If something we built moves, cracks or fails in the first year because of how it was built, we come back and fix it. No argument, no invoice.

A number before anyone visits.

Trace the job on a satellite view of your own property, or send a photograph, and the page prices it. The on-site visit is free and it is what makes it exact.

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