Testing standards, ASTM/EN certifications, freeze-thaw durability, water absorption limits and factory QC protocols for natural stone cladding.
CE marking is the passport that construction products need to move legally in the European Union. Since 1 July 2013, the Construction Products Regulation — Regulation (EU) 305/2011 — has made CE marking compulsory for a…
The Australian standard for stone cladding has almost nothing to do with the stone itself — and that is the first thing importers miss. A container of slate panels can be perfect and still stall on a project because the…
Green building buyers are asking stone suppliers a harder question than "is your stone natural?" They want the data behind that word. What is the global warming potential of your panels? Which lifecycle stages does your…
Every few years the same question lands in a stone buyer's inbox: "Is this stone radioactive? I read something about granite and radon, and my customer is asking." It usually arrives right before a sale, and it costs or…
A wavy wall does not start at the wall. It starts on a factory floor, in the gap between a straightedge and the face of a panel that was never checked. Installers notice it an hour in: the grout line steps up and down, …
The softest-looking stone on your facade out-crushes the material under your foundation. Structural concrete cures to roughly 20 to 40 MPa. A piece of natural slate — the same material roofers split by hand — typically …
The most important number on a stone panel cut sheet is not flexural strength, and it is not compressive strength. It is the water absorption rate — the percentage of a panel's dry weight that soaking water can pull int…
A stone panel can pass every visual check and still fail on the wall. It arrives with the right color, the right texture, flat and square — then a wind event pulls at the facade, or a scaffold leg presses into the venee…
Anti-freeze testing for stone panels usually gets blamed for the wrong failures. A panel spalls on a northern facade after three winters, and the stone manufacturer takes the hit. The root cause is often not a brittle r…
Container weight, not container volume, is the number that decides your landed cost for natural stone cladding. Stone runs around 2,600 to 2,800 kg per cubic meter, which means a single 20GP loads out long before the cu…
