Introduction
Quartz countertops are popular in kitchens and bathrooms thanks to their durability, aesthetic appeal, and low maintenance. Unlike natural stone, quartz is an engineered stone made from crushed quartz, polymer resins, and pigments that create a hard, non-porous material. While quartz itself is stain, scratch, and heat-resistant, using a sealer provides an extra layer of protection. But with so many options on the market, how do you choose the best sealer for quartz countertops?
In this comprehensive guide, we’ll cover everything you need to know about choosing and using a sealer for quartz countertops. We’ll discuss the pros and cons of different types of sealers, provide application tips, and recommend the top sealers for protecting quartz surfaces. With the right sealer, you can keep your quartz counters looking like new for years to come.
What is a Sealer and Why Use It on Quartz?
A sealer is a protective coating that is applied to the surface of materials like natural stone, concrete, grout, and even quartz. Sealers work by sealing the microscopic pores on the surface to prevent stains and damage from penetrating deep into the material.
While quartz is non-porous, sealers provide an extra layer of protection against:
- Stains from spills like wine, oil, and juice that can cling to the surface
- Etching and dulling from acidic liquids like vinegar, citrus, and some cleaners
- Bacteria growth in kitchens and bathrooms
- Damage from abrasive cleaners and scrubbing
- UV light fading or dulling in outdoor kitchens
So even though quartz is durable, a sealer gives it lasting shield against potential issues. Sealing quartz once a year can maintain its flawless, glossy look.
Choosing the Best Quartz Countertop Sealer
There are a few key factors to consider when selecting the ideal sealer for your quartz counters:
1. Penetrating vs. Topical Sealers
Penetrating sealers soak into the microscopic pores on the surface and bonds inside the material. This offers more durable protection. Topical sealers coat the outer surface only.
For quartz, a penetrating sealer is best since it provides protection without altering the appearance. Topical sealers can sometimes leave a residue or film on quartz.
2. Water-based vs. Solvent-based Formulas
Water-based sealers use water as a carrier and are lower odor. Solvent-based formulas use chemicals as a carrier and have stronger fumes.
Water-based is usually best for indoor use on quartz counters. Make sure the area is well-ventilated regardless of formula.
3. Protection Against Stains, Bacteria, and Damage
Look for a sealer made for quartz that provides broad protection against stains from oil, drinks, food, and more. It should also guard against etching, dulling, bacteria, and scratches/abrasions.
4. Ease of Application and Re-application
Opt for a sealer that goes on easily with a cloth or sponge in a thin, even layer. It should dry quickly without leaving residue. Reapplication once a year should also be simple.
5. Non-Altering Finish
The sealer should not change the appearance of your quartz by adding a glossy coating or discoloration. It should preserve the original finish.
The 5 Best Sealers for Quartz Countertops
With those tips in mind, here are our top recommendations for quartz sealers:
1. StoneTech BulletProof Sealer
- Penetrating sealer made for engineered stone
- Silane/siloxane formula provides durable protection
- Guards against stains, etching, bacteria, UV damage
- Preserves natural finish; no residue
- Apply annually for maintenance
2. Miracle Sealants 511 Impregnator
- Deep-penetrating sealer for natural and engineered stone
- Water-based formula with low odor
- Repels stains from oil, drinks; prevents etching
- Easy squeeze bottle application
- Reapply every 1-3 years
3. Granite Gold Sealer Spray
- Convenient spray formula with easy application
- Safe for indoor use; water-based and low odor
- Guards against stains, dulling, mildew, and etching
- Preserves natural look of quartz
- Reapply annually
4. TriNova Granite Sealer and Protector
- Made for granite but works on quartz too
- Penetrating sealant is smudge and streak-free
- Protects against stains, scratches, UV damage, bacteria
- Formula is non-toxic, low odor
- Lasts 1-3 years with proper maintenance
5. Black Diamond NexGen Natural Stone Sealer
- Designed for natural and engineered stone
- 2-in-1 sealer and enhancer formula
- Water-based, low odor; safe for indoor use
- Prevents staining, etching, dulling, and dehydration
- Enhances color; reapply annually
How to Apply a Sealer on Quartz Countertops
Applying a quartz sealer properly ensures you get the most protection. Follow these steps:
- Clean counters thoroughly with a ph-neutral cleaner, rinse, and let dry completely.
- Mask off any areas you don’t want sealed like walls and floors with painter’s tape.
- Apply sealer according to brand instructions with a clean cloth, foam applicator, or sponge. Spread in thin, even coats and avoid puddling.
- Allow sealer to penetrate the surface and dry completely, usually 30-60 minutes. Additional coats may be needed for more protection.
- Remove any excess sealer with a dry cloth. Check for residue or shine that indicates too much sealer was applied.
- Let cure for the recommended time before using the countertops. Avoid spills and abrasive cleaners during this time.
- Reapply sealer every 1-3 years depending on usage and sealer lifespan. Clean, dry, and follow directions.
6 Benefits of Using a Quartz Countertop Sealer
Sealing quartz counters provides several advantages:
- Stain prevention: Sealers help prevent stains from oil, wine, juice, and other liquids that can cling to the surface. This maintains the flawless look.
- Etch protection: Acids found in foods and some cleaners can etch and dull quartz over time. A sealer provides a barrier against this.
- Easier cleaning: Sealed counters can be easily wiped clean without stains setting in that require scrubbing to remove.
- Antibacterial: Sealers prevent bacteria growth in kitchens and bathrooms for improved sanitation.
- Color protection: Sealers shield against UV light damage that can cause fading or discoloration.
- Abrasion resistance: The sealer fills in micro-scratches and helps prevent dulling from regular use and abrasive cleaners.
Frequently Asked Questions
Should quartz countertops be sealed?
Yes, sealing is recommended to provide extra protection. The sealer fills in microscopic pores and prevents stains, damage, and bacteria growth. Look for a penetrating sealer made for engineered stone.
How often should you seal quartz?
Reapply the sealer every 1-3 years depending on usage. More frequent sealing is needed in busy kitchens. For maintenance upkeep, clean thoroughly and reseal annually.
Does sealing quartz change the look?
A quality quartz sealer should not alter the appearance, leave a residue or make the surface shiny. It preserves the natural finish. Test a small area first.
Can I use a granite sealer on quartz?
Yes, sealers made for granite work well on quartz too since the materials are somewhat similar. Be sure to check that it is non-altering and safe for use on engineered stone.
What’s the best way to apply a quartz sealer?
Wipe on a thin layer with a clean cloth according to directions. Allow proper drying time before use. Make sure the counters are totally clean and dry before applying. Reseal every 1-3 years.
Conclusion
Regularly sealing your quartz counters with a product made for engineered stone will keep them looking pristine. The sealer provides an invisible shield against stains, etching, bacteria, and dulling that can occur over time with use. Be sure to choose a non-altering penetrating formula for the most effective protection. With the right sealer applied properly, you can easily maintain the sleek, polished beauty of quartz surfaces for years of enjoyment.