Industry Standard Tolerances

At Granite Heaven, we pride ourselves on the quality of our workmanship and attention to detail. One of the most common questions we are asked is about the appearance of joins in stone surfaces.

The industry standard for stone benchtop joins is up to 2mm. This standard is widely accepted across the stone fabrication industry and reflects what is achievable when working with natural and engineered stone products.

While stone is a beautiful and durable material, it is also rigid and cannot be manipulated in the same way as softer building products. This means that slight variations in walls, cabinetry, or stone thickness can result in joins that are not completely seamless. A join tolerance of up to 2mm ensures that the stone can be installed safely and securely while still achieving a high-quality finish.

At Granite Heaven, we always strive to achieve the tightest and most discreet joins possible. Joins are carefully aligned and filled with colour-matched epoxy to minimise visibility and provide a clean, professional result.

Note: Stone slabs are subject to both natural and manufacturing tolerances. For man-made stone this is usually ±1–2mm, while for natural stone it can be up to ±3mm, depending on the product and colour. We always recommend checking the supplier’s specifications prior to purchase. These small variations are normal and are taken into account during fabrication and installation.

By working within the accepted 2mm tolerance, we ensure your stone is installed to industry best practice while maintaining its strength and integrity.