Stone Cladding for the Aroona Walls You Already Have

Sunshine Coast Council lists alteration to, or replacement of, cladding attached to an external wall among the work that needs building approval under the Building Regulation 2021, and leaves the case-by-case call to a private building certifier.

Ordering stone before that question is answered means a crate arriving for a design that may still change - ledgestone ships 36 cartons to a wooden crate weighing over a tonne, and free-form loose stone as 1 m2 layers in 15 m2 crates.

We link Council's own page rather than paraphrasing it, we tell you plainly that a private building certifier is the one who confirms your job, and we give you the published weight and coverage figures to take into that conversation.

Council publishes its fence rules and its retaining wall rules separately, and they are not the same rules: fences up to two metres high above the fence's natural ground surface can generally be built without building approval, while a building permit is required before construction, modification or repair of most retaining walls, with council approval as a concurrence agency for fences and for retaining walls over 2 metres high.

Two of Council's statements are easy to run together and mean different things. 'Regardless of their height, all retaining walls must comply with relevant building laws, codes and standards' is a compliance requirement; the approval statement is that a building permit is required before construction, modification or repair of most retaining walls. Council separately lists what modifying an existing retaining wall includes - repairing or replacing more than 20% of its structural components, excavating close to the base, and adding additional load to the top of the wall - and whether a stone finish falls inside that list is a call for a private building certifier, not for a supplier's product page. Council also states that ownership of a dividing fence on a common boundary is shared equally between fence owners, so a boundary design can involve a neighbour as well as a threshold.

We put the thresholds on the page in Council's words, point you to Council and a certifier to confirm your own wall before you order, and quote lineal metres of corner separately so a pier can be priced accurately once the design is settled.

Weight per square metre is the number that separates a wall from a floor. ARDEX's technical bulletin puts stack stone cladding tiles generally in the order of 50 to 80 kg per m2, recommends additional mechanical fixing where substrate weight limits are exceeded and where tiles are installed 3 metres or higher above ground level, and gives a 6mm fibre cement wallboard fixed at 200mm centres a capacity of only 20 kg/m2, against 32 kg/m2 at 100mm centres.

Our own published figures sit inside that conversation: stackstone panels at 42.9-44 kg per m2 and free-form loose stone at approximately 65 kg per m2. Choosing between them is therefore partly a question about the wall that is already standing and how it was built - which is a question for the person qualified to assess it, not for a product page.

We publish our kg per m2 where the manufacturer publishes it, attribute every fixing and capacity figure to ARDEX rather than restating it as our own instruction, and send the numbers with you to the person qualified to apply them to your wall.

Corner and return pieces are separate items across our ranges - by the lineal metre for free-form loose stone, as matching corner units for ledgestone - so quantity depends on how many external corners the job has, not on face area alone.

On a wall that is already standing the corner count is set by the structure rather than by a drawing: you count the external edges the wall already turns, and each of them is bought by the lineal metre rather than by the square metre. Under-order and you finish with a mitred, mismatched return on the most visible edge of the job.

We list corners as their own SKUs with their own dimensions and weights, and our ledgestone pages carry the measuring instruction in writing: measure the external dimension of every corner, not the inside size. Bring the measurements to Baringa or send them through and staff will check them.

A substrate compatibility note appears on our free-form loose stone pages only, and it carries our own qualifier that application details change according to adhesive, substrate and stone specifications. The stackstone and ledgestone ranges publish dimensions, coverage and weight but no substrate list and no adhesive recommendation at all.

Guessing on a vertical surface is not a low-stakes guess, and the free-form note is not a ruling on any particular wall. ARDEX names the adhesive classes generally used for this work - polymer-fortified C2 cement-based types or R1 reaction resin epoxies - and notes that per AS3958, concrete block and brick should be rendered before cladding tiles are adhesive-fixed, which is squarely relevant to a wall that is already standing.

We say so rather than inventing a recommendation: the substrate note covers the free-form range only, we publish no adhesive recommendation, and ARDEX's own position is that qualified and certified engineers determine sub-wall suitability, the supporting angle system and the anchors.

Sealing a vertical face is not sealing a floor. Aqua Mix instructs that on vertical surfaces you apply bottom to top, or apply to each tile prior to installation, and our product pages advise that most natural products be sealed immediately after laying, with the reapplication period taken from the sealer manufacturer's guidelines.

Streaking on a front elevation or an entry pier sits at eye level for years, and a dry-stacked wall with no grout joints is far easier to seal piece by piece before it goes up than after. Aqua Mix also states plainly that sealers will not prevent surface wear or etching from acids or caustic chemicals.

We stock Enrich'N'Seal, carry the manufacturer's vertical-application instruction and its stated limits rather than a claim of our own, and staff at Baringa take the care question in person - one reviewer of the sealer wrote 'Helpful staff always on point with advice and organisation'.

Interior heater and fireplace surrounds are an established use of this product - our own panel copy lists fire surrounds among intended uses, and a customer wrote of the Galaxy Black Montage panels 'Beautiful result and very easy to tile. Looks fantastic behind our wood burner!'.

Clearance to combustibles is set by the heater, not by the stone, and no supplier can answer it from a product page. What we can hand over is the product half of it - the panels' published weight per square metre and coverage per box - while the clearances, and the make-up of the wall the surround goes onto, stay with the heater manufacturer and a qualified installer.

We quote our own product wording and our customers' experience, and we give no clearance, hearth or heat-rating guidance of any kind - those come from your heater manufacturer's clearance requirements and a qualified installer.