Does Granite Need Sealing? Protecting Your Natural Stone Surfaces

Granite countertops, while durable and low in porosity, can still be susceptible to staining and etching if not properly sealed. This article discusses the importance of sealing granite to protect your surfaces from damage.

Protection Against Stains

Sealing granite is crucial to prevent liquid, such as oils and other substances, from penetrating the surface. Over time, unsealed granite can become stained, and this can happen even with the use of regular kitchen appliances and food items that are commonly used. Key staining culprits include cooking oil, grease, and colored liquids like red wine or grape juice. Even pizza oil can seep through from the bottom of the pizza box and onto the countertop, causing a stain.

Choosing the Right Frequency of Sealing

The frequency of resealing granite can vary between 1 to 3 years, depending on the type of granite and its usage. A simple water test can help determine if your granite needs resealing. If the water beads up on the surface, the seal is still effective. However, if the water soaks in, it's time to reseal the granite. Proper resealing is essential to maintaining the integrity and appearance of your granite surfaces.

After the countertop is installed, sealants should be applied in the confined areas around faucets, sinks, and stovetops. These areas cannot be accessed once appliances are installed, so sealing them before installation is crucial. Over time, leaks and spills can still occur, even after installation.

Types of Sealers

There are several types of sealers available, including penetrating sealers that soak into the stone and topical sealers that create a protective layer on the surface. Penetrating sealers are generally more effective for long-term protection, while topical sealers are easier to apply and can provide immediate protection. Manufacturers' instructions should be followed when applying either type of sealer to ensure the best results.

The Application Process

Sealing granite is a straightforward process. First, thoroughly clean the surface. Then, apply the sealer according to the manufacturer's instructions and allow it to dry completely. Regular maintenance, including sealing, helps keep granite countertops and surfaces looking their best and prolongs their lifespan. The process does not take long and only needs to be done a couple of times a year.

Sealing your granite countertops will help protect the surface from damage due to water or acid or alkalic spills. Common kitchen fluids like coffee, tea, tomato juice, and lemon juice can degrade the surface over time. Without sealing, the countertop may begin to look dull and can become porous and soft in places as some of the minerals of the natural stone are chemically affected by normal spills. Proper sealing helps protect the surface and maintain the life and beauty of your natural stone countertops.

While sealing is not compulsory, it is minimal upkeep and will keep your counters looking nice and performing well for a very long time. Regular sealing can significantly enhance the durability and aesthetic appeal of your granite surfaces, ensuring they remain a cherished addition to your kitchen for years to come.