Composite sinks contain two or more materials—such as acrylic, granite, quartz, resin and pigments—that when combined result in a durable, heat-resistant, easy-to-clean product that a kitchen sink manufacturer can mould to match nearly any interior kitchen design style or colour scheme. Although composite sinks have hard surfaces, composite can scratch depending on the type and quality of materials used. Composite can also stain or discolour if not cleaned regularly. As a result, clean your composite kitchen sink after every use with a mild cleanser.
Wash your composite sink with mild detergent, hot water and a soft, lint-free microfiber cloth or a commercial composite cleaner formulated specifically for the materials that make up your sink (for example, granite composite sink cleaner).
Scrub stains away gently with a non-abrasive scrubbing pad or soft-bristled nylon brush. To remove tough stains or hardened debris, soak the area with hot water for an hour and scrub it with a slightly abrasive scrubbing paste made of 1 cup baking soda mixed with enough water to give the baking soda a paste-like consistency and your pad or brush.
Rinse the sink thoroughly to remove all particles and residues.
Wipe the sink completely dry with cloths.
To remove tough grease or oil stains, paint or mineral deposits (scale), apply a mild, commercial composite sink degreaser or stain and lime scale removal product to the stain or scale, wait for 15 to 20 minutes--or longer if recommended by the product's manufacturer--and scrub gently with a non-abrasive scrubbing pad or soft-bristled, nylon brush.
Never use harsh, abrasive, alkaline, bleach, or citrus-based cleaners or cleaning tools such as steel wool on your composite sink as doing so can discolour (stain or fade), etch or pit the sink's surfaces. Never use solvents such as acetone or paint stripper for the same reason. Always wipe the sink dry after use as minerals or chemicals in tap water can discolour your sink or accumulate as scale on surfaces over time. Always wear gloves to protect your hands from the cleaners. If using a commercial product, also wear a mask as some products contain chemicals that release strong or hazardous fumes.