Concrete sinks have become a popular choice for kitchens because they allow for more design choices. The three main types of concrete sinks are pedestal, vessel and integral sinks. The most common model for kitchen sinks is the integral, which is installed flush with the countertop. There are professionals who will make and install concrete sinks but doing it yourself presents and interesting alternative.
- Skill level:
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Things you need
- Liquid concrete colouring
- Sink mould
- Empty dustbin or concrete mixer
- Concrete sealant
- Concrete wax
- Silicone caulk
Choose where the sink will be installed. Decide on the style of sink: vessel, pedestal or integral.
Measure the area where the sink will be installed. The measurements will determine the size of the mould you will use. If there is already a sink installed, measure its outer edges. If there is no sink installed, measure the space or existing countertop that will be cut. Be sure to leave at least 1.5 inches between where the sink will go and the edges of the counter. Take into account the location of the pipes beneath the countertop when purchasing a mould that fits the dimensions. While buying the mould, also select liquid concrete colouring.
Prepare and mix the concrete. Wear gloves and safety goggles when mixing or working with concrete. Mix 6 litres of water per cubic yard of concrete with the liquid concrete colouring in a large dustbin or concrete mixer.
Apply concrete to the mould. Cover the sink mould evenly with concrete using a trowel. Allow the concrete-covered mould to dry. Concrete should be cured for seven to 10 days before removing the mould.
Gently pry the mould off using a crowbar. Make sure that you have someone to help you remove the mould from the sink because the concrete sink will be heavy.
Cover the concrete surface with concrete sealant and wax. This will protect the surface and give it a shine.
Install the concrete sink. The installation method will depend on the style of sink. Vessel-style concrete sinks require an application of silicone caulk between the base of the sink and the countertop to prevent water from accumulating beneath the sink. Allow the silicone to dry, and place the vessel-style sink on the counter mount that comes with it. Install a pedestal sink using an under-sink mount that rests on the pedestal stand. An integral sink, the most frequently used kitchen sink style, must be installed on the mount that sits beneath the counter and out of sight. Follow the installation instructions on the sink to install the integral style sink into the hole in the countertop. Once the sink is resting in the hole, screw supportive L brackets to the bottom of the sink and the inner cabinet wall. This will help support the weight of the sink.
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