Corian – Technical Specifications

Introduction

Corian® is a solid surface material made from 1/3 acrylic resin and 2/3 mineral filler. It is used as a decorative material in a variety of applications, such as kitchens and bathrooms in both commercial and residential environments. Corian® is supplied in sheets which can then be fabricated into worktops, vanity tops, showers and cladding – which will offer versatility, functionality and durability.

Joints

Joints are inconspicuous and unobtrusive providing a seamless worksurface. Due to the level of pigment in the material, joints can be blended to insignificance.

Tolerance

Tolerance in Corian® is ±2mm

Thermal expansion

Due to thermal expansion Corian® can expand up to 1mm per metre. A gap of at least 3mm should be left at each end of the worktop when fitted and filled with decorators caulk. When Corian® is joined to other materials (such as glass, steel or wood) an elastic type of adhesive, for example polyurethane is required for expansion.

Overhangs and supports

Any overhang extending more than 300mm should be supported.

Hob and Sink Cutouts

The compulsory method for installing square hobs is the high-strength cutout patented by Dupont. Hobs must be integrated into a Corian® worksurface according to specified guidelines. Where a Corian® splash back or wall cladding is installed a gap of 50mm (minimum) is required behind an electric hob or 100mm (minimum) for a gas hob. A ‘breakfront’ may be necessary to accommodate this requirement. There must be a minimum of 50mm from the cutout to the front of the worktop and a gap of 120mm between heated cutouts.

A minimum of 50mm is required between two sink cutouts. Sink cutouts must be placed a minimum of 50mm from the worktop front edge. This is required under terms of the product warranty.

If a waste disposal unit is fitted to an undermounted sink after installation, additional support will be required, otherwise your warranty may be invalidated.

Internal Radius

The minimum internal radius is 80mm. Thermoforming to achieve a smaller radius can result in “bleaching” of the colour. To achieve a radius smaller than 80mm Corian® may have to be laminated, this may be visible in larger particled Corian® colours.

Upstands

There are two types of upstand available.

  • Square Corian® upstands are fixed on site, with Corian® glue or silicone.
  • Coved Corian® upstands are manufactured and fixed in the factory.

Due to manufacturing constraints there may be gaps as these upstands are manufactured in a straight line. This type of upstand is not suitable for walls where there are large variations in the wall profile. Plastering or tiling should ideally be completed after the worksurface installation.

Scratches

Corian® is scratch resistant but not scratch proof; the use of chopping boards and/or pastrymates is recommended. Dark, heavily pigmented colours will show scratches, dust and ordinary wear and tear more readily than lighter, textured forms.

Staining

While most tough stains can be buffed away, a level of care and maintenance is required, as spills should be cleaned up immediately.

Repairable

Corian® surfaces can easily be repaired. Using an ordinary abrasive cleaner and a scouring pad the surface may be fully restored to its original appearance.

Hygienic

Corian® is a non-porous material. Naturally resistant to mould, bacteria and mildew, Corian® surfaces have been certified by an independent laboratory as a hygienic material, according to the international norm DIN EN 1SO 846.


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