Yes, natural stone splashbacks can be sealed to prevent staining and water damage, and sealing is highly recommended for maintaining the longevity and appearance of the stone. Natural stone is porous, meaning it can absorb liquids, which may lead to stains, natural stone splashback water damage, or even mold growth if left untreated. Sealing the stone creates a protective barrier that minimizes the risk of these issues and helps preserve the beauty and integrity of the material over time.
Why Sealing Is Important
Natural stones like granite, marble, limestone, and travertine are widely used for splashbacks due to their unique appearance and durability. However, their porous nature can make them vulnerable to absorbing liquids such as water, oils, and cooking splatters, which can lead to discoloration or damage. Stains from substances like wine, oil, or tomato sauce can be particularly hard to remove once they penetrate the surface of the stone.
Sealing the stone effectively blocks pores, reducing its ability to absorb these liquids. For example, kitchen splashbacks are exposed to frequent splashes of water, grease, and acidic substances, all of which can damage unsealed stone. Similarly, in bathrooms, natural stone splashbacks are exposed to high moisture levels, which could lead to watermarks or mold if the stone isn't properly protected.
Types of Sealers
There are two primary types of sealers for natural stone: penetrating sealers and surface sealers.
Penetrating Sealers: These are absorbed into the stone, filling the pores and preventing liquids from penetrating the surface. Penetrating sealers are ideal for splashbacks as they don’t alter the appearance of the stone. They provide long-lasting protection without changing the texture or finish.
Surface Sealers: Also known as topical sealers, these create a protective layer on top of the stone. While they can provide additional protection against scratches, they may alter the stone’s appearance by adding a glossy or matte finish. Surface sealers are often used in areas with heavy traffic or where extra protection is needed, but they may not be as durable as penetrating sealers for splashbacks.
How Often Should Natural Stone Be Sealed?
The frequency of sealing depends on the type of stone and the sealer used. Some stones, like granite, are denser and may only require sealing every one to three years. Other, more porous stones like marble or limestone may need to be sealed more frequently—sometimes annually. The quality of the sealer also plays a significant role in determining how often reapplication is necessary. High-quality penetrating sealers can last several years before reapplication is needed, while some surface sealers might require more frequent upkeep.
A simple test to check if a stone needs to be resealed is the "water test." Pour a small amount of water on the stone’s surface and observe whether it is absorbed. If the water seeps into the stone within a few minutes, it's time to reseal. If the water beads up on the surface, the sealer is still intact.
Application Process
Sealing natural stone splashbacks is a relatively straightforward process. After thoroughly cleaning the stone to remove any dirt, grease, or residues, the sealer is applied using a brush, roller, or spray. It's essential to follow the manufacturer’s instructions regarding application and drying times. Once applied, the sealer will typically need several hours to cure fully.
It’s also important to ensure that the stone is dry before sealing, as sealing a damp stone could trap moisture, potentially leading to mold or mildew growth. Proper ventilation during the sealing process is crucial to avoid inhaling fumes from the sealer.
Conclusion
In summary, sealing natural stone splashbacks is a vital step in preventing staining and water damage. The porous nature of stones like marble, granite, and limestone makes them vulnerable to liquid absorption, but applying a high-quality sealer can offer excellent protection. The type of sealer used—whether penetrating or surface—depends on the specific needs and aesthetic preferences for the space. Regular maintenance, including resealing when necessary, will ensure that your natural stone splashback remains both functional and beautiful for many years.
