Project: Chilliwack Mountain

A 60 Foot Rock Wall on Chilliwack Mountain

The largest wall we have built. Sixty feet tall and two hundred and fifty feet long, holding a hillside so the property above it could finally be used.

  • 60 ft tall, 250 ft long, built in levels
  • 2,000 to 2,500 tons of local rock
  • Engineered, permitted, built by our own crew

Three years on site, from the first dig to the finished yard.

Licensed & Insured Serving Chilliwack & the Fraser Valley since 2013

What sits on the terrace

The wall created a level bench where there had been a bank. This is what went on it.

How it was built

The wall came first, everything else followed

An old 1960s house sat on a slope with grass running down the hill and trees across the bank. The usable part of the property was a fraction of what the owners were paying for, so they started over. Nothing above the bank could be planned until the ground below it was held, which made the wall the first real decision on the project. The stone came from Armstrong Sand and Gravel Ltd out of Agassiz, and ran between $350,000 and $400,000 before any excavation or machine time.

  • Dug ten feet into the hillside, so the wall is anchored in undisturbed ground instead of sitting on the slope.
  • Two feet of gravel under the base, for drainage and to stop uneven settlement across a 250 foot run.
  • Three inch clear crushed rock behind the face, with geogrid through the backfill tying the wall and the soil behind it into one mass.

Engineered and permitted. At this height there is no version of this job that skips either.

The whole project

Three years, and the wall was one part of it

Alongside the wall there was the demolition of the original house, the new build, a septic field, a pool and the finished yard. The project ran about three years and came to somewhere between $2.5 and $3 million. Two to three of our people were on site continuously through it.

  • The hard part was not the rock, it was planning a job that kept changing across three years.
  • What was underground did not match the plans, so the work adjusted to the ground as it was found rather than as it was drawn.
  • Any contractor who promises nothing will change on a three year build is guessing.

Built by our own crew, start to finish.

What this means for a smaller wall

Most of the walls we build are nothing like this one.

A typical wall

Forty to seventy feet long, kept under four feet tall where we can, and built in somewhere between a week and a month.

The same method

Compacted base, clear rock behind the face, geogrid where the height calls for it, and somewhere for the water to go.

The same crew

A thirty thousand dollar wall in a back yard gets built the same way as a sixty foot one, just smaller.

Talk to us about your slope

We’ll come out, look at the hill you are trying to hold, and give you a written quote with the full scope, so you know exactly what you’re getting before any work starts.

Licensed & Insured Serving the Fraser Valley since 2013

Proudly local

Rock walls across the Fraser Valley

Based in Chilliwack, we work with homeowners and businesses across the Fraser Valley, including:

Not sure if we cover your area? Call (604) 703-8315 and we’ll let you know right away.


Contact Us

Hours: Mon – Fri – 7:30AM-6PM PST

Phone: (604) 703-8315

Email: shipwreckind@gmail.com