Stone Veneer Installation — Marrickville
A sandstone-veneer fireplace surround installed in an Inner West renovation. Case study: lightweight stone veneer on a timber-framed wall, finished with a matching hearth and mantel.
What was wrong when we arrived
The owners were renovating a 1920s California bungalow and wanted a sandstone fireplace surround as the centrepiece of the new living room. The wall behind it was timber-framed and could not carry a full solid sandstone block wall.
They had been told by one contractor to use cultured stone — a cast concrete product made to look like sandstone. They did not want fake stone. They wanted the real thing, even if it had to be thinner.
The existing chimney breast had been closed off during a previous renovation and was being opened back up. The new flue liner had already been installed by the time we came in.
How we fixed it
We used 30mm sandstone veneer — full-thickness stone, but cut thin enough to sit on a timber frame wall with a steel stud backup. Total weight on the wall was about 75kg per square metre, well within the stud and sheeting capacity.
The veneer was laid in a random-coursed pattern with a tight 8mm lime-mortar joint. We dry-laid the panels on the floor first to plan the coursing and the corner returns before any adhesive went on the wall.
The hearth and mantel were cut from the same batch of sandstone. The mantel was a single piece, 1.6m long, hand-checked on the front edge to give it the rough-dressed look of the original bungalow chimneys.
What the client got
The fireplace is the centrepiece of the room. The owners sent us a photo six months later with a real fire going in the hearth — the wall had not moved, the stones had not cracked, and the heat from the fire had cured the mortar harder.
The same veneer system was used on the outdoor kitchen and the bathroom feature wall by the next contractor on the job. We came back for both.
Total cost was about 40% of what a solid sandstone block fireplace would have been, primarily because the structural wall did not need engineering.
Questions about stone veneer installation
Can you put sandstone veneer on a timber-framed wall?
Yes, with a steel stud backup. The total weight — stone, adhesive, and substrate — is about 75 to 90kg per square metre. A standard timber stud wall with one layer of 16mm plywood sheeting will carry that. We do not put stone veneer on standard plasterboard without checking the framing first.
Is stone veneer real stone?
The sandstone veneer we use is real sandstone, cut from the same quarries as the full-thickness blocks. The difference is the thickness — 20 to 40mm instead of 100 to 200mm. Cultured stone (cast concrete made to look like stone) is a different product. We do not use it.
How long does a stone veneer fireplace take to install?
For a single living-room fireplace, three to five working days. We do the substrate prep, dry lay, adhesive bed, and grouting over that week. You can use the room the day we finish.
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