Sandstone Fireplaces

Sandstone fireplaces and stone feature walls

A sandstone fireplace or feature wall brings the warmth of Sydney stone indoors. We build surrounds, hearths, chimney breasts and TV walls for gas, wood and electric fires.

Floor-to-ceiling sandstone fireplace and chimney breast under a raked ceiling in a Bilgola Beach living room

In short

A sandstone fireplace is a surround, hearth, mantel or full chimney breast built from natural sandstone around a gas, wood or electric fire. The stone must be fixed to solid masonry or another suitable substrate with mechanical support, never plasterboard, and the gas connection is made by a licensed gasfitter.

Indoor stonework is detailed, heavy and right in the middle of your home, so it needs a mason who plans the support, the clearances and the finish before the first stone goes on. Blake Cooper has been building sandstone fireplaces on the Northern Beaches for years, from new builds to renovations of existing brick fireplaces. Building or designing a project? See how we work with builders and architects.

At a Bilgola Beach home we built a floor-to-ceiling sandstone fireplace and chimney breast under a raked ceiling, finished with a recycled-timber mantel and an LED-lit hearth. That mix of hand-dressed stone, timber and light is typical of the work we enjoy most. We also build fireplace surrounds in limestone for a paler, more even look.

What we build

  • Fireplace surrounds

    Sandstone around a new or existing firebox, in split-face, rock-face, sawn or random ashlar patterns.

  • Hearths

    Raised or flush sandstone hearths, including block hearths with lighting or a built-in log store.

  • Chimney breasts

    Full-height stone chimney breasts, including tall walls under raked and cathedral ceilings.

  • TV and feature walls

    Stone feature walls that combine a linear gas or electric fire with a wall-mounted TV and joinery.

  • Cladding existing fireplaces

    Sandstone over an existing brick fireplace to update a dated living room without demolition.

  • Mantels

    Stone or timber mantels set into the stonework, including recycled timber beams.

Gas, wood or electric

Sandstone works with all three. Gas fires are the most common choice in renovations and must be connected by a licensed gasfitter. Electric fires need no flue, so they are the easiest retrofit and a natural fit for TV walls.

Wood heaters give the real fire and the smell of burning timber, but they carry the most rules. On the Northern Beaches you need Council approval under the Local Government Act before installing one, and the heater must meet the Australian installation and emissions standards (AS/NZS 2918 and AS/NZS 4013). For every type we follow the appliance manufacturer's clearances to combustibles and use heat-resistant backing where specified.

Weight, support and substrate

Natural stone is heavy. Thin natural veneer is roughly 58 to 73 kg per square metre, and full-bed stone is much heavier, so a fireplace wall needs proper support. We fix stone to solid masonry or a suitable cement-based substrate with mechanical ties or a support ledge, and never to plasterboard.

Before we start, we check the wall framing, the floor under the hearth and any opening above the firebox. Large chimney breasts can need a floor check or extra support, and openings need a properly designed lintel. If you are working with a builder or designer, we coordinate with them early so the backing is right before the stone arrives.

How we work

How we build a sandstone fireplace

  1. Look and measure

    We visit, measure the wall and discuss stone, pattern, mantel, hearth and lighting.

  2. Check the appliance

    We work from your fire's installation manual so clearances, flue and cut-outs are planned in.

  3. Prepare the substrate

    We confirm or install suitable backing and support, and protect your floors and furniture.

  4. Dress and lay the stone

    Each piece is dressed and laid by hand, working around the firebox, TV mounts and power points.

  5. Finish and seal

    We point, clean and seal the stone with a breathable sealer, then clean up.

What affects the cost of a sandstone fireplace

Fireplaces vary a lot in size and detail, so we quote each one. These are the main things that affect the cost.

Size and height
A full-height chimney breast under a raked ceiling uses far more stone and scaffold than a low surround.
Stone and pattern
Random ashlar, large pitched-face blocks and sawn stone each take different amounts of cutting and fitting.
Substrate work
New backing, support ledges or structural checks add time before the stone goes on.
Hearth and mantel
Raised block hearths, lighting and timber or stone mantels add detail.
Other trades
Gasfitting, electrical work, flue installation and Council fees for wood heaters are separate.

Get a written quote for your project

Licensed trades and approvals

We build the stonework. Gas connections are done by a licensed gasfitter, wiring for lighting, TVs and electric fires by a licensed electrician, and flues to the manufacturer's instructions. A wood or solid fuel heater on the Northern Beaches needs Council approval before installation, and Council charges application and inspection fees, so check the current requirements with Northern Beaches Council early.

Sandstone Fireplaces FAQs

How much does a sandstone fireplace cost?

A sandstone fireplace is priced per job. The size of the wall, the stone and finish (sawn ashlar, split-face or rubble), the hearth and mantel, any substrate or support work, and the gas or flue work by other trades set the cost. We measure up and give you a free written quote.

Will sandstone crack from the heat of a fireplace?

Not when the fireplace is installed to the appliance maker's clearances. The firebox or insert takes the direct heat, and the sandstone surround and hearth sit outside it. Stone exposed to direct flame, such as the inside of a fire pit, needs a firebox or refractory lining, because direct high heat can crack or spall natural stone.

Can I mount a TV on a sandstone feature wall?

Yes, if the fixings go into solid backing rather than the stone face alone, and the TV sits outside the heat zone the fireplace maker specifies. We plan the TV position, cable conduit and any recess before the stone goes on, so nothing is chased into finished stonework.

Can sandstone be used around a gas fireplace?

Yes. Sandstone suits gas, wood and electric fireplaces, as long as the stonework follows the appliance manufacturer's clearances to combustibles and any heat-resistant backing it specifies. On a sandstone gas fireplace we plan the stone around the firebox and flue, and the gas connection is made by a licensed gasfitter. We build fireplaces like this across the Northern Beaches.

Can you clad my existing brick fireplace in sandstone?

Usually, yes. Cladding an existing brick fireplace in sandstone is a common Northern Beaches renovation, because solid brick is a good base for stone. We first check the brickwork, the hearth and the floor below for soundness and support, then fix the sandstone with suitable adhesive and mechanical ties. It updates a dated room without demolishing the fireplace.

Is a stone feature wall too heavy for my house?

A natural stone feature wall is heavy: thin natural veneer weighs roughly 58 to 73 kg per square metre and full-bed stone much more. That is fine on solid masonry or a suitable cement-based substrate with mechanical support, but stone must never be fixed to plasterboard. We check the wall and floor before quoting any sandstone fireplace or TV wall.

Do I need council approval for a wood heater on the Northern Beaches?

Yes. Installing a wood or other solid fuel heater on the Northern Beaches needs approval from Northern Beaches Council under the Local Government Act, and Council charges application and inspection fees. The heater must be installed to AS/NZS 2918 and meet the AS/NZS 4013 emissions standard. We build the sandstone fireplace surround and hearth to suit the approved appliance.

How do I clean soot off a sandstone fireplace?

Sandstone is porous, so soot and smoke can stain a sandstone fireplace if it sits too long. Brush off loose soot with a soft dry brush, then clean with a pH-neutral stone cleaner and water, avoiding acids and harsh household cleaners. Sealing the surround and hearth with a breathable penetrating sealer makes future cleaning much easier.

How long does it take to build a sandstone fireplace?

Most sandstone fireplaces and TV feature walls take a few days to a couple of weeks on site, depending on the size, the stone pattern, substrate work and how other trades such as the gasfitter and electrician are scheduled. We will give you a timeline with your quote, so you can plan around the work in your Northern Beaches home.

Planning something in stone?

Tell us what you have in mind. Blake will talk it through, visit the site and give you a clear written quote.