Please be aware that the following information represents the most current details available from our various material suppliers and may be subject to change without prior notice.
- Granite, Marble & Reconstituted Stone For natural stone and engineered stone products like Caesarstone, Silestone, Smartstone, Quantum Quartz, etc., with nominal 20mm slabs featuring a 20mm edge or mitred/laminated apron/edge profile:
- Overhangs of up to 150mm without additional support are permitted in 20mm material to allow for a finished 20mm edge. For overhangs exceeding 150mm, substrates are necessary.
- Extra support rails are required on edges adjacent to underbench ovens, sinks, and dishwashers.
- Up to a 300mm overhang is permissible without requiring additional support (18mm substrates are sufficient) at intervals of 600mm or less.
- Overhangs exceeding 300mm necessitate brackets, legs, or a metal frame to support the substrates.
- A minimum of 80mm is required between the front edge of the benchtop and cutouts such as sinks or hotplates. A minimum of 50mm is needed from the rear of the benchtop to cutouts. A minimum distance of 35mm must be maintained between sink and tap cutouts.
- Porcelain 12mm Panels (DEKTON, INFINITY, LAMINAM, NEOLITH & QUANTUM SIX+ 12mm)
- 12mm panels require full 18mm substrates. Mitred edges of 40mm require 26mm substrates.
- Overhangs of up to 150mm with no additional support are allowed in 12mm material to create a finished 12mm edge. For overhangs exceeding 150mm, substrates are required.
- For 40mm mitred edges, substrates must be 8mm thicker than usual, i.e., 26mm substrates instead of 18mm.
- A minimum distance of 50mm must be maintained from each cutout, both from the edge to the cutout and between cutouts.
- Undermount sink cutouts should be the same size as the sink or rebated, meaning the material should not overhang.
- Drainage grooves, drainage sections, and flush mounting for appliances are not feasible with these panels.
- Porcelain 5, 6, or 8mm Panels
- These panels are exclusively intended for use as splashbacks or other vertical surfaces and are not suitable for benchtop applications.
- Porcelain 20mm Panels
- 20mm panels do not require substrates. However, back-to-front supports must be fabricated every 600mm and installed around the perimeter of cutouts larger than 600mm.
- The standard overhang for 20mm panels is 300mm. Additional support in the form of MDF substrates (or similar) will be necessary for overhangs exceeding 300mm.
- A minimum distance of 50mm must be maintained from each cutout, both from the edge to the cutout and between cutouts.
- Undermount sink cutouts should not overhang sinks; they should be rebated or level with the sink.
- Drainage grooves and drainage sections are possible but must be limited to a maximum of 25% of the material, i.e., a maximum of 5mm in 20mm material. Flush mounting of hot plates is also possible but will result in rounded corners, not square ones as typically seen on most appliances.