First check that the kitchen units on to which the worktop is to be fitted are completely level. A damp proof membrane is required on the underside of the worktop above dishwashers etc. Don’t forget to fit any profiles supplied with the dishwasher intended to conduct away heat and moisture. Worktops must always be fitted with a minimum gap of 5mm from walls.
When jointing two worktops at right angles, first assemble the worktop with feathers and check that the two edges fit perfectly. Then separate the two sections 4-5mm apart and fill up the gap with clear silicone. The sections can then be tightened with the clamps. In doing so, the silicone is pressed partly into the wood and partly out of the joint. Excess silicone is removed immediately as described in the directions for use. It is important to tighten the fixing brackets after installation. It may therefore be necessary to drill holes in the kitchen units under the joints.
Firmly screw the worktop to the kitchen units or to the supports at the front, in the middle and at the rear edge. The lengthwise distance between the screws should not exceed 40cm.
If there is a fixed top in the kitchen units use 4mm timber spacers to permit the free circulation of air. The spacers are positioned crosswise where the worktop is to be secured with screws. Be sure to place spacers around sinks and other large cutouts. The slots through the top of the units and spacers must be oblong in shape (min. 10mm) to allow cross-grain movement in the worktop. You could choose to let the rearmost holes remain round so the worktop only moves forwards, or alternatively you can drill round holes at the front edge, so the worktop can only move towards the rear. The screws should therefore be placed in the centre of the oblong slots. Screw holes must be pre-drilled. Use washers with the screws. The screws must not be tightened so securely that the worktop is prevented from moving freely.
If the worktop does not have a fixed work surface, it can be fitted by using special angle brackets with long holes. The angle brackets can be fitted to the sides of the units or on special supports. Please remember to position the long holes across the width of the worktop.
Where there are cut outs for sinks etc, the worktop should be supported transversely on both sides of the cutout. Here it may be necessary to fit a transverse batten or similar.