The expense for maintenance will also be higher than that of a composite granite sink as natural granite sinks—much like natural granite countertops—need to be resealed yearly to preserve their beauty.
If you would like to rejuvenate the look of an aging granite sink, or if you would like to alter its color so it matches its surroundings better, you can accomplish your goal by coating it with the appropriate type of paint.
Once your granite composite sink is cleaned, you can restore its shine using mineral oil. Apply a tablespoon of mineral oil to a soft cloth and buff using a circular motion. Wait 1 minute, wipe away and enjoy the luster.
Failure to properly seal will result in a gradual breakdown of the stone. But extra sealing means extra work and expense for you on top of the cost of the sink itself, which is typically quite expensive. Pure granite sinks are some of the most expensive available.
Though it's hardwearing and largely damage-resistant, a granite composite sink requires regular maintenance. Dark sinks are generally lower-maintenance, but they may show a white film; light sinks may stain.
Composite Granite Sink Disadvantages
Hardness: While some sink materials are more forgiving, composite granite is hard enough to break glassware when dropped onto the surface. This granite composite sink problem is something to consider if you frequently wash breakable dishes in the sink.
Yes, composite sinks can withstand boiling water. There is no issue with pouring hot water down a granite, quartz, or solid surface sink.
It is essential you avoid extreme variations in temperatures coming into contact with your sink – such as pouring out a pan of boiling water followed by ice cold water. This can cause thermal shock in composite sinks and will result in hairline cracks appearing.
Stubborn Stains – A solution of 50% bleach, 50% water should only be used for tough, stubborn stains. Let the solution sit in the bottom of the sink for one hour; then scrub. Rinse well. Also, the use of Bar Keepers Friend (directions included on bottle) will help remove stubborn stains.
You can also use a 50:50 solution of bleach and water to remove any stains. You should always make sure to dry granite composite sinks thoroughly after using them. To prevent any permanent staining, don't leave standing water or dishes in your sink.
You might need a polishing powder. Buy a polishing powder designed for natural stone countertops. You'll generally have to mix the powder with water to form a paste. Then “polish” problem areas with a soft cloth.
Hard Water Mineral Deposits (Calcium, Magnesium, Lime)
Unless you wipe your sink dry after every use, water left behind will eventually evaporate. When water evaporates, minerals such as calcium, magnesium, and lime are left behind, bonding to the surface. These spots are called mineral deposits.
While applying the epoxy filler into the cracks, the challenging part is to level and smooth the epoxy filler with the rest of the granite sink surface. This can be sorted out with the help of a spatula with which, you can easily develop an even and smoothly leveled surface.
Composites are non-porous – This makes them much more sanitary than granite, which can conceal bits of food and bacteria in its crevices. Composites also can withstand disinfectant products without damaging the material, unlike granite.
Quartz tends to be more affordable, and it comes in a vast array of color choices because it's basically a manmade product. Granite composite, on the other hand, although a little pricier, is indestructible as a countertop or sink because a large percent of the product is actual stone from the earth's crust.
However, it is important to note that granite sinks can be susceptible to staining if they are not properly sealed. On the other hand, stainless steel sinks are also extremely durable and resistant to scratches, chips, and heat. They are also easy to clean and maintain, making them a popular choice for busy kitchens.
Use Soft Scrub with Bleach Cleanser or Soft Scrub with Bleach Cleaner Gel to free your sink of soap scum, dirt, and stains. Marble and Granite: Tough on stains, yet gentle on your most delicate surfaces, Soft Scrub's Multi-Surface Gel is a rinse-free gel that cleans and polishes marble and granite sinks.
For a more thorough clean, sprinkle baking soda over the whole sink, then spray with a 75/25 solution of white vinegar and water to create a fizzing solution. A gentle scrub with a soft sponge and an old toothbrush is enough to give your sink a thorough clean.
A 50% mix of water and white vinegar can be used to remove limescale deposits, ensure to rinse thoroughly after use, do not leave the vinegar in contact with the surface. A nylon scratch pad or toothbrush can be used on difficult areas. Dry the sink after use to delay future build up.
Don't pour soap directly on granite countertops. Stone is porous, and full strength soap can seep into pores causing tough to remove stains. Always dilute your soap with water before cleaning. Don't use an abrasive scrubber.
Tips For Keeping Granite Sinks Clean
We recommend using a mixture of baking soda and white vinegar to deep clean your granite sink. You should always avoid highly harsh chemicals or abrasives such as ammonia and steel wool. Keep in mind that granite composite sinks can be damaged by extreme heat and aluminum cookware.
Bleach: While bleach is a great disinfectant, it can dull the finish of your granite and in some cases even change its color. There are other, safer, ways to disinfect your stone, so avoid bleach and any products that contain it when cleaning your granite.