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How to Seal Marble Countertops

How to Seal Marble Countertops

Marble countertops possess a timeless elegance and bring a sophisticated appearance to any kitchen or bathroom they are installed in. Although marble countertops are a long-lasting option, similar to other natural countertops, they have a porous structure which makes them susceptible to water damage and stains over time. To prevent this and to ensure long-lasting durability of the countertops and to prevent stains, properly sealing the countertops is essential. Keep reading to learn how to seal marble countertops and the step-by-step sealing process. 

Why is sealing so important? 

Marble is a natural stone and it requires specific care due to its porous nature and unique characteristics. It can absorb moisture and spills, therefore it can get stained or discolored. More importantly, factors such as dirt and food particles can cause bacteria to absorb into the stone. It is important to ensure that there is a protective barrier between the marble surface and these factors. Water based sealers are one of the preferred choices as they are user-friendly, environmentally conscious, and extremely effective in maintaining the beautiful appearance of the countertops while also preventing stains. 

How to choose the right sealer?

Picking the right sealer for the job is an important step for kitchen countertops. Water based sealers are very easy to use and they are especially ideal for marble countertops. You should pick a high-quality water based sealer and ensure that it is formulated for natural stones such as marble. Moreover, you should look for impregnating sealers because they ensure deep absorption into the stone which provides longer-lasting and more thorough protection. 

How to seal marble countertops 

The first step is to gather the necessary supplies for the sealing process. 

The first necessary item is the sealer. You should pick a reputable brand that meets the aforementioned criteria and make sure that it is suitable for natural stones. To apply the sealer, you will need an applicator pad. Opt for one that is gentle on the surface so that there is no danger of scratching the surface. 

Moreover, you should also have some lint-free or microfiber cloths so that you can wipe away the excess sealant if the need arises. To clean the countertops before applying the sealer, you should also have a pH-neutral cleaner to thoroughly rid the surface of any dirt or debris. To protect the adjacent surfaces such as the backsplashes or the cabinets, you can use painter’s tape. 

The second step includes preparing the marble surface. Clean the countertops meticulously and thoroughly with the pH-neutral cleanser and a soft cloth or sponge. Keep in mind that any dirt and debris you don’t clean will be stuck in the sealant, which will hinder its ability to properly protect the stone. No stains or residues should be left. Dry the countertops with a clean, dry cloth, then allow some time for any leftover moisture to evaporate. 

Now the sealing process can begin. Choose a well-ventilated area for the sealing. This will dissipate the fumes that will be emitted by the sealer. This is important to ensure a safe working environment. Before applying the marble sealer all over the surface, apply it on a small section of the countertops. Make sure to pick an inconspicuous place, for example, a spot you are planning to put an appliance on. This will ensure the compatibility of the sealant with the marble. During this point, you can also tape off the surfaces that shouldn’t contact the sealer. 

Pour a small amount of the sealer onto the surface without flooding the area because pouring too much all at once can lead to uneven coverage. Use the applicator pad to spread it evenly across the surface. You can work in small sections to make sure every inch of the stone gets even and adequate coverage. 

Allow 15-30 minutes of dry time for the sealant to get absorbed into the pores to seal marble countertops effectively. At the end of the 30 minutes, inspect the countertops, wipe away any excess sealer, and pay attention to any area that might not have been properly sealed. 

According to the instructions of the particular sealer you are using, you might need to apply a second coat. Before applying the second coat, you should allow the first one to dry completely. After the sealing is complete, allow it to dry completely. It is usually recommended to allow it is dry for around 24 hours to 48 hours. As it dries, the sealer will form a uniform protective layer on the surface. 

To ensure that the sealant is effectively protecting the stone, put a couple of drops of water on the surface of the stone. If the droplets are beading on the surface without seeping into the stone, the sealant is applied correctly and the countertops are protected. 

Sealing the countertops is a process that requires a lot of care and attention to ensure the longevity of the countertops. However, learning how to seal marble countertops is fairly easy and straightforward. As long as you pay attention to the meticulous steps of the process, such as ensuring an even application of the sealer and making sure that you aren’t missing any spots, you won’t have problems with the sealing. By sealing your countertops, you are contributing to the longevity and durability of your countertops. Moreover, you are ensuring that they will preserve their beautiful appearance for a much longer time. Remember that this isn’t a one-time process and marble countertops need to be regularly resealed to replenish the sealer that wears off over time. This might seem tedious, however, this easy process will defend your investment for years to come.