Most cabinetmakers now are quite familiar with the installation of Butler and Belfast sinks, so discussing the installation with them is always a good place to start. Usually the sinks are installed "undermounted" (with the exception of drop-in or inset sinks). This means that the benchtop sits on the top edge of the sink. The benchtop will have a cut-out for the sink - most often with the front of the sink exposed. Normally the benchtop overhangs the sink by about 1cm.
Sink measurements can vary up to 2%. Ensure you measure your individual sink before cabinet and benchtop construction.
Support
Generally no special support is needed for these sinks, however we would recommend that the sides of the shelf on which the sink is mounted are supported with a "slat" of melamine or timber below each side for a little extra strength.
Sealing
We recommend that the junction of the sink and the benchtop is sealed with a flexible sealant (like kitchen silicone). This not only stops any water from running under the bench, but also helps in stability by fixing the sink to the benchtop. Please note: it is vital that this sealant be flexible, especially with stone benchtops, as the rate of contraction and expansion will differ between the sink and the stone, so these two elements need to be free to move independently of each-other. Use of a rigid adhesive here will void the warranty, and as such needs to be avoided.
Plumbing
All fittings required for simple connection to drainage are supplied. These comply with all appropriate Australian standards and also accommodate any overflows (as required). This procedure is quick and easy and then connects to standard plumbing fittings.
Waste Installation
When installing the waste fitting/s it is important to use some silicone sealant between the stainless steel waste flange (the part that you will see in the sink around the plug) and the glazed sink itself. This is to stop water from draining under the flange when the sink is filled. If surfaces are cleaned with a cloth dampened with Mineral Turps the silicone adheres very well. Use the same cloth to clean up any excess silicone that squeezes out when the waste fitting is tightened. Ensure that the silicone is cleaned up before it dries.
Importantly, care must be taken not to over-tighten the waste fitting. The fitting should be tightened by hand from underneath the sink. If a screwdriver is used to tighten the screw in the centre of the waste fitting care should be taken not to use excessive force. If the fitting is over-tightened the sink could crack as a result - something that is not covered by warranty.
