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Jul

11 Questions People Ask About Sealing Kitchen Countertops

An essential part of maintaining many kitchen countertop options is sealing. It prevents the surface from absorbing moisture, harboring bacteria, and staining or discoloring. Marble, quartzite, and granite countertops, among many others, require sealing. Here are some of the most frequently asked questions about sealing kitchen countertops, along with their answers.

Top FAQs About Sealing Kitchen Countertops

Why seal your kitchen countertops?

You have to apply a sealant on your kitchen countertops to create a protective barrier against moisture, oils, and stains. A sealant keeps your countertops from staining, scratching, etching, and fading prematurely. It also makes the surface easier to clean and more hygienic.

Which countertops require sealing?

Natural stones, wood, concrete, and tile countertops usually require sealing. Natural stone countertops include granite, marble, quartzite, sandstone, limestone, basalt, travertine, etc. These materials require sealing because they have a porous surface (or have grout lines) that allows moisture to be absorbed, leading to stains, bacteria growth, and damage. Therefore, you seal them regularly.

Which kitchen countertops don’t require sealing?

Non-porous kitchen countertop options like quartz (engineered quartz), solid surface (Corian), laminate, stainless steel, and sintered stone don’t need to be sealed.

Some metals like zinc and nickel are also non-porous and don’t need sealing, but they require waxing to keep them from developing a patina. So, these two are not recommended if you need a low-maintenance surface.

Is there a natural stone countertop option that doesn’t need sealing?

Soapstone is a natural stone countertop material that doesn’t require sealing. Even though it’s not completely non-porous at the microscopic level, it’s still one of the most dense natural stones used for countertops and doesn’t need to be sealed. If you want, you can wax or oil it, but it’s not mandatory.

However, remember that even though soapstone is almost non-porous, it’s softer than granite and quartzite. So, it can scratch and dent easily. However, you can sand the surface to remove scratches.

Another dense natural stone countertop option is slate, but it’s usually recommended to seal it.

How to seal kitchen countertops?

If you have a natural stone, wood, tile, or concrete countertop, you have to seal it. The exact instructions may vary, but the general method is below:

  1. Choose the right sealant. There are various types of sealers, so choose one that is for your countertop material.
  2. Thoroughly clean the countertop surface to make sure there is no stuck dirt, food crumbs, or anything else on the slab. Only use a mild dishwasher and warm water for cleaning, and avoid harsh cleaners.
  3. After cleaning, wipe the countertop with a dry cloth and then let it dry for 30 minutes or more.
  4. Carefully read the instructions on the sealant’s label.
  5. Prepare to apply the sealant in sections of 2 to 6 square feet of space at a time.
  6. Begin with one section. Apply the sealant slowly onto the countertop and spread it using a microfiber cloth.
  7. Let the sealant be absorbed by the stone without completely drying. It may take from 5-15 minutes, depending on the countertop material and the sealant.
  8. Once the surface appears dry, you can wipe it with a sealant-soaked cloth to remove any unabsorbed residue left on the surface. Let the surface dry again for 1-5 minutes.
  9. Now, wipe that section with a dry cloth.
  10. Repeat steps 4 to 9 till you cover every inch of the countertop.
  11. Remember that sometimes a surface requires more than one coat of the sealant. If the surface dries too quickly, it usually needs another coat.
  12. Let it cure for 24 to 72 hours. Don’t use the countertop or place anything on the surface. Plus, avoid using the sink as well.

How often do you reseal your kitchen countertops?

The frequency of resealing depends on the type of countertop material you have and the type of sealer you choose. Here’s a list of countertop options with their generally recommended resealing frequency:

  • Granite: Every 1 to 3 years
  • Slate: Every 1 to 3 years
  • Concrete: Every 1 to 3 years
  • Quartzite: Every 1 to 2 years
  • Recycled glass: Every 1 to 2 years
  • Marble: Every 6 to 12 months
  • Limestone: Every 6 to 12 months
  • Travertine: Every 6 to 12 months
  • Sandstone: Every 6 to 12 months
  • Onyx: Every 3 to 6 months
  • Wood: Every 1 to 3 months

Can I seal quartz countertops?

Engineered quartz countertops are non-porous and don’t require sealing, so you don’t have to seal them ever.

How to perform a water test to know your countertops need resealing?

A simple water test can help you determine whether to seal your countertop or wait for a few more months. You usually perform it once every 6 months. Here’s how to perform it:

  1. Spill a small amount of water on the surface.
  2. Use a stopwatch or clock to see how long it takes for it to dry and form a dark spot.
  3. If there’s a dark spot in less than 10 minutes, reseal the countertop no matter when you sealed it the last time.

How to choose the right sealant for your kitchen countertops?

When choosing a sealer for your kitchen countertops, look for terms like impregnating or penetrating sealant, and make sure that the sealer is for the stone type you have. Every natural stone requires a slightly different treatment, so ensure you see something like “for granite surfaces” if you have granite countertops.

There are three major types of sealants for stone countertops:

  • Water-based penetrating sealants: They are cheaper and eco-friendly, but don’t last as long as solvent-based sealers.
  • Solvent-based penetrating sealants: They are more expensive and may emit more VOCs, but they keep your countertop’s surface sealed and protected for long.
  • Fluoropolymer sealants: They are considered the best and the most expensive sealants.

For concrete and butcher block countertops, you need topical sealers and coatings, like acrylics, epoxies, and natural waxes and oils. Make sure they are food-safe.

Why seal tile countertops when they are waterproof?

Even though tile countertops, like ceramic and porcelain, are non-porous and waterproof, the grout lines aren’t. They absorb water and also wear over time. So, a sealant can keep the entire surface waterproof, including the grout lines.

How to protect sealed countertops?

Sealants protect countertops from moisture and oil, but they need care as well to stay effective for a long time. Otherwise, the sealant will wear quickly – on busy spots, especially – and the stone will start fading or staining before you notice that you have to reseal it. Below are some maintenance tips to protect your countertops and the sealant:

  • Never put hot pans or any other hot item directly on the surface. Use trivets and coasters.
  • Don’t chop food on the surface without a chopping board.
  • Avoid using any knives or dragging heavy metal items on the surface.
  • Clean acidic spills quickly.
  • Don’t use harsh cleaners or cleaning tools.

Conclusion

Sealing your kitchen countertops can extend their lifespan and prevent fading. For fabricating, installing, or sealing your countertops, get help from a granite contractor Rockville.