Best Concrete Sealers for Indoor or Outdoor Surfaces - Concrete Network (2022)

An overview of the types of sealers and what to consider when shopping for the best sealer for your needsUpdated April 28, 2020

A concrete sealer is essential for protecting surfaces from water damage caused by freeze/thaw cycles, stains from dirt, deicing salts, oil and other contaminants, and much more. So, if you’ve just installed the decorative concrete masterpiece of your dreams, make sure it gets sealed.

Concrete Sealer Product Information

Top 10 Sealer QuestionsGet answers to frequently asked sealer questions from a technical expert.

Compare Sealer TypesUse this chart to quickly decide which sealer type you should buy for your project.

Removing Concrete SealersLearn how chemical strippers work, how to choose the best one, and what precautions to take when using them.

Whether it’s a pattern-stamped pool deck or patio, an interlocking paver driveway, an acid-stained floor, or an exposed-aggregate walkway, a good sealer will keep it looking spectacular for many years to come while extending its service life. And even if the surface begins to show wear after years of exposure to traffic and the environment, you can often restore its original beauty with a good cleaning and fresh sealer application.

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Concrete Floor Sealer
Exterior Concrete Sealer
Concrete Countertop Sealers
Concrete Sealer Reviews

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Best Concrete Sealers for Indoor or Outdoor Surfaces - Concrete Network (6)Clear-Seal by Increte Systems Seals and protects decorative surfaces.

(Video) Choosing a Concrete Sealer | Part 2 – Sealing Concrete

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Best Concrete Sealers for Indoor or Outdoor Surfaces - Concrete Network (11)Polyaspartic Concrete SealerEconomical yet functional, wet concrete look.

Best Concrete Sealers for Indoor or Outdoor Surfaces - Concrete Network (12)Water Repellent PenetratingSealer for driveways, parking structures, plazas, walkways & more.

WHAT'S THE BEST CONCRETE FLOOR SEALER?

Concrete is an incredibly durable flooring choice, especially when properly sealed. Whether for a commercial or residential property, a basement or a garage, a concrete floor sealer is an easy and affordable way to ensure the surface will look its best and function well for years.

A good concrete floor sealer will:

  • Prolong the life of a floor
  • Enrich and preserve its appearance
  • Provide resistance to scuffs and stains
  • Prevent moisture problems

Film-forming sealers, either epoxy or acrylic, are most often used for indoor flooring. Epoxy concrete sealers are the most durable, making them good for sealing garage floors and high-traffic retail environments. Softer acrylic sealers, which require a sacrificial floor wax, are more affordable and popular for residential concrete floors, including basements. When working indoors, it's safest to apply a water-based sealer, because they don’t contain harmful fumes from VOCs.

WHAT'S THE BEST OUTDOOR CONCRETE SEALER?

Sealing outdoor concrete surfaces is an essential part of hardscape maintenance. Concrete sealer is a lot like car wax-many people go without and then regret it when the paint peels. Sealer may not seem necessary at first, but after a few years of exposure to weather and use concrete can become discolored, stained or even flaky.

(Video) Top 5 Best Concrete Sealer Review in 2021 & 2022 | Which One Should You Buy?

A combination of spraying and rolling is being used to seal a stamped concrete driveway.
Decorative Concrete Institute in Temple, GA

A concrete driveway or patio sealer will protect against:

  • Oil stains
  • Tire marks
  • Deicing salts
  • Yellowing or fading
  • Water damage
  • Dirt, mud and mold
  • Lawn care chemicals

All types of exterior concrete should be sealed including plain concrete, stamped concrete, stained concrete, integrally colored concrete, exposed aggregate, stenciled concrete, engraved concrete and overlays. Each surface lends itself to unique needs when it comes to a sealer. For more information, check out these in-depth resources:

  • Stamped Concrete Sealer
  • Driveway Sealer
  • Patio Sealer
  • Exposed Aggregate Sealer

The best concrete sealer for a driveway, patio, pool deck or walkway is UV resistant, breathable, and slip resistant, even when wet. When a good concrete sealant is used, maintenance is easy—wash the driveway or patio with soap and water, or a degreaser designed for use on cement, and apply a fresh coat of sealer about every three years.

Outdoors a penetrating concrete sealer is usually better than a film-forming product for safety reasons, but also because the end result will last longer and looks more realistic and natural, especially when sealing stamped concrete.

WHAT'S THE BEST SEALER FOR CONCRETE COUNTERTOPS?

Sealing is the last, but most important, step when installing concrete countertops in a kitchen or bathroom. A waterproof concrete countertop sealer will prevent food stains as well as scratches.

The best sealers for countertops are:

  • Heavy-duty
  • Food-safe
  • Colorless
  • Non-yellowing
  • Heat and scratch resistant
  • Low-odor, with zero VOCs

Countertop sealers come in varying sheen levels, from matte to high gloss. If you want to be able to use your countertop immediately, you can opt for a fast-curing sealer. For extra protection and shine, some countertop installers will apply a food-safe finishing wax over the concrete sealer.

CONCRETE SEALER REVIEWS

The concrete sealers with the best reviews tend to be professional grade, not the type you can buy at your local home-improvement store. Professional grade sealers can be ordered online through specialized companies, or purchased at a local concrete supply store.

Top reasons for a good concrete sealer review:

  • Easy to apply
  • Good coverage rates
  • Water beads up nicely
  • Dries quickly
  • Low odor
  • Doesn’t change the color of the concrete
  • Resists scratches
  • Lasts a longtime
  • Prevents flaking from freeze-thaw damage

Decorative Concrete Institute in Temple, GA

SEALING NEW CONCRETE VS. SEALING OLD CONCRETE

Most sealers are best applied when the concrete has been allowed to fully cure for at least 28 days. However, there are cure and seal products available that can be applied as soon as the concrete is strong enough to support the weight of a person.

If you’d like to seal fresh concrete soon after pouring, select a sealer that contains a curing compound. Make sure to wait until all the bleed water has evaporated from the surface of the concrete before applying a cure and seal.

Sealing can be a great way to restore the appearance of old concrete. Existing concrete can be sealed or resealed at any time. Some manufacturers make sealers specifically formulated for older, more porous concrete.

If there is already a sealer present, it may need to be removed. Check with the sealer manufacturer to see if you can seal over the top of the existing sealer. If the concrete is unsealed, all it needs is a thorough cleaning before applying sealer. You may also wish to fill any significant cracks prior to sealing.

WILL SEALING CONCRETE CHANGE ITS APPEARANCE?

This depends on what type of concrete sealer you choose (use this concrete sealer comparison chart to compare your options). The main purpose of any sealer is protection; however, some also enhance the color or gloss of the concrete. If you don’t want your concrete to look different, a clear concrete sealer that penetrates beyond the surface will not change its appearance.

Sealer Color: Colored concrete sealers are tinted to add color to plain concrete or augment the color of stained concrete. Additionally, some sealers enhance, or deepen the color of concrete that has been integrally colored or stained.

(Video) Concrete Sealers - Sealer Selection Tips

Sealer Gloss: Sealers come in different gloss levels, ranging from a flat natural finish to a high-gloss, reflective finish. Wet look concrete sealers have the highest solids content, giving the concrete the glossy look some people desire. Sealers with high-gloss often need grit added to make them slip-resistant.

FILM-FORMING VS. PENETRATING SEALERS

Concrete Sealers - Sealer Selection Tips
Time: 04:34

There are two main types of concrete sealers: film-forming sealers and penetrating sealers.

Film-forming sealers include acrylics, epoxies, and urethanes that form a coating on the surface of the concrete. Film-forming sealers, especially acrylics, are more susceptible to wear and will need to be reapplied frequently. This type of sealer is sometimes referred to as a topical concrete sealer or a coating.

Tip: Choose a film-forming sealer if you want a wet look or high gloss finish that enhances the color of your concrete.

Penetrating sealers include silanes, siloxanes, silicates and siliconates that penetrate into the concrete to form a chemical barrier. Penetrating sealers have a long lifespan and are a great choice for exterior applications. They don’t peel, delaminate or wear away. This type of sealer is sometimes referred to as an impregnating concrete sealer.

Tip: Choose a penetrating sealer if you prefer a natural finish that will not change the look of your concrete.

HOW MUCH SEALER DO I NEED?

To determine how much sealer you’ll need for your concrete you need to know these things:

  • Coverage rate
  • Square feet
  • How many coats are required

For example, if the sealer you are using will cover 100 square feet per gallon and your patio is 200 square feet, you will need two gallons. For sealers requiring two coats, they typically cover twice as much on the second application. So in this scenario that would be 200 square feet, meaning you would only need one additional gallon for the second coat, making it three gallons in total.

Coverage rates will vary depending on the porosity of your concrete. Typically, older concrete is more porous and may require extra sealer.

It is always a good idea to have more sealer on hand than you think is necessary. You don’t want to run out before the job is complete. Stopping and starting sealer application can cause appearance and performance problems.

Decorative Concrete Institute in Temple, GA

CONCRETE SEALER APPLICATION TIPS

Applying a sealer to concrete is a fairly simple and fast process (learn more about how to apply concrete sealer). Most are applied in a similar way, but always check the instructions on the specific sealer you are using before getting started.

(Video) Top 5 Best Concrete Sealer Review In 2022

Sealer success tips:

  • The surface must be clean and dry to ensure good adhesion
  • Allow new concrete to cure fully prior to sealing
  • Seal concrete when the weather is dry and above 50°
  • Always apply sealer in thin layers
  • Two coats will provide the best protection
  • Solvent-based sealers are best spray applied
  • Water-based sealers are best applied by roller
  • If you have textured concrete (broom finish or stamped), sealer may pool if applied too thickly

Applying concrete sealer is something that many homeowners take on as a DIY project. If you choose to do so make sure you have the appropriate protective gear and equipment needed. Also do plenty of research about the process and follow the instructions included with your sealer carefully.

HOW LONG DOES IT TAKE TO SEAL CONCRETE?

Sealing concrete is a fast process that can be completed in a single day. If the sealer you’re using requires two coats, you may have to wait a specified amount of time before applying the second coat. However, some sealers can be applied wet-on-wet, which means there is no downtime.

Here are approximate dry times for the various sealer types:

  • Acrylics dry fastest, dry to the touch within one hour
  • Penetrating sealers are dry to the touch in about 3 hours and ready for traffic in 6-12
  • Epoxies and urethanes take the longest to dry, up to 48 hours

WHEN SHOULD CONCRETE BE RESEALED?

Most concrete should be resealed every 1 to 3 years. However, this will depend on the type of sealer used, the amount of abuse it is exposed to and so forth.

Signs that you may need to reseal:

  • Water no longer beads on the surface, but instead soaks into the concrete
  • The sealer appears scratched, worn, dull or dirty

How long concrete sealers last:

  • Penetrating sealers containing silicate, silane, or siloxane last longest, sometimes a lifetime
  • Soft acrylic coatings wear the fastest, needing reapplication every 1 to 3 years
  • Epoxies, polyurethanes and polyaspartics are much harder than acrylics lasting 5-10 years

WHY IS IT IMPORTANT THAT A SEALER IS BREATHABLE?

Concrete is porous, which means air and water can pass through from one side to the other. If a sealer isn’t breathable, this moisture would become trapped and cause problems. During the winter, trapped moisture can freeze and expand within the concrete, leading to cracks or other surface damage such as spalling or efflorescence.

The best concrete sealers allow moisture and air to escape, while still providing protection. Most manufacturers describe this quality as breathability and recognize that it is especially important when sealing outdoor surfaces. Penetrating sealers and acrylics offer the best breathability.

COMMON CONCRETE SEALER PROBLEMS

Sometimes concrete sealers fail. The most common reason for sealer issues is improper application.

Concrete sealer problems and their causes:

  • Bubbles - caused by applying sealer too thickly or over-rolling
  • Discoloration - white or cloudy efflorescence-like markings caused by trapped moisture
  • Peeling - caused by moisture-vapor, contamination or over-application of the sealer
  • Streaks/Lines - caused by the sealer drying too quickly during application

In some cases, these problems can be fixed by applying a fresh coat of sealer to the concrete, other times the existing sealer may need to be stripped first to start fresh.

IS CONCRETE SEALER TOXIC?

All concrete sealers should be handled with caution. During application, toxic fumes can be bothersome and the sealer can be a skin or eye irritant.

Sealer safety tips:

  • Open doors and windows for good ventilation
  • Wear a mask or respirator
  • Wear long sleeves and pants
  • Wear gloves, good shoes and eye protection
  • Wash well after applying sealer

Some sealers contain VOCs (volatile organic compounds) that are released into the air during application and at a slower rate after the sealer has dried. Recent federal and local regulations have set limits for VOC content.

Newer water-based sealers are less harsh and contain lower amounts of VOCs. Many are also environmentally friendly and qualify for LEED points.

If you are a contractor who applies sealer on a regular basis, take precautions to prevent breathing in an excessive amount of fumes.

Contributions by Anne Balogh, Bob Harris, Bill Palmer, Chris Sullivan, and Bill York

FAQs

What is the best type of concrete sealer? ›

Epoxy concrete sealers are the most durable, making them good for sealing garage floors and high-traffic retail environments. Softer acrylic sealers, which require a sacrificial floor wax, are more affordable and popular for residential concrete floors, including basements.

Does indoor concrete need sealing? ›

No matter if your concrete flooring is in your office, domestic kitchen, living area, or commercial space, it needs to be sealed properly.

What do professionals use to seal concrete? ›

Epoxy. Also known as polyurethane sealers, epoxy sealants cost more than acrylic ones. However, rather than providing a soft finish that lasts one to three years, a quality epoxy sealer can protect your concrete for five to 10 years.

What do you seal indoor concrete floors with? ›

To seal concrete floors, use an epoxy sealer if you want something durable that comes in a variety of colors. For indoor concrete floors that won't be exposed to oil or grease, use an acrylic sealer, which is easy to apply. If you want to seal over concrete floors that already have a seal, try a polyurethane sealer.

Do you need 2 coats of concrete sealer? ›

Concrete sealers are best applied in two thin coats. The first coat of sealer acts like a primer. Most of it will disappear into the concrete surface, and the concrete will probably look fairly unattractive after the first coat. The second thin coat will provide an even finish, color enhancement and gloss.

How long does concrete sealer last on concrete? ›

How Long Will The Product Last? Acrylic topical coatings have the shortest lifespan, needing re-applied every 1-3 years. Epoxy and urethane systems last between 5-10 years, closer to 5 if the surface experiences heavy traffic.

Can you put concrete sealer on old concrete? ›

Before applying a new sealer, it's very important that you make sure the old one is completely gone. This is because any old sealer left on the surface of your concrete can impede the effectiveness of the newly applied sealant, preventing proper adhesion to the concrete surface.

Do concrete sealers really work? ›

Outdoor concrete sealers are not only worthwhile but necessary. Experts who recommend having a concrete surface sealed are doing their customers a big favor. Without this extra layer of protection, concrete will absorb moisture and may begin to crack, spall, flake, and discolor, among other things.

Does concrete dry from inside out or outside in? ›

Concrete dries as the water inside it evaporates through its surface. As this water evaporates through the surface, water from deep within the concrete moves through the capillaries and up to the surface to replace it. As long as the surrounding air can hold more water vapor, evaporation continues.

How long do you have to stay off concrete after sealing? ›

Typically, it can take anywhere from 10-12 hours to dry before being able to be walked on, but they will continue to harden for up to 48 hours after being applied. Concrete sealed with a urethane coating should not be walked on (with the exception of a recoat), driven on, or wet for at least 36-48 hours.

Is it better to roll or spray concrete sealer? ›

Rollers can also be used to apply sealer, but a sprayer will do a better job. Select the right type of sealer for the job – your main options are water-based sealer and solvent-based sealer.

What are the two types of concrete sealer? ›

There are two common types of sealers to choose from – film forming and penetrating, with each offering their own different benefits and each suitable for different applications.

How do I choose a concrete sealer? ›

Tip: When choosing siloxane sealer, look for a product that is water-based with a low VOC content. These will be easier to apply and safer. Acrylic concrete sealer keeps costs down, is easy to apply, and can be used on both interior and exterior surfaces.

What is the best floor covering for a concrete floor? ›

To sum it up – carpet, engineered hardwood, laminate, or vinyl flooring are all great options to install over a concrete substrate that can last for years when properly maintained.

How do you seal cracks in indoor concrete floors? ›

How to Fix a Crack in Concrete | A DIY Guide - YouTube

What happens if you put too much sealer on concrete? ›

Heavy coats of sealer, or a buildup of sealer applied numerous times over the years, will cause moisture to become entrapped under the sealer and, in time, the sealer loses adhesion from the concrete.

Can you apply too much concrete sealer? ›

If a sealer is overapplied, the surface tends to bubble where gas is trapped. Bubbles in concrete sealer usually result from heavy product application. During application of the sealer, outgassing from the concrete surface should be free to quickly move through a thin, wet sealer film.

How many square feet will 5 gallons of concrete sealer cover? ›

Essential Values 5 Gallon Concrete Sealer (Covers 7500 Sq Ft) – Made in USA - Excellent Clear & Wet Sealant Designed for Indoor/Outdoor Surfaces - for Concrete | Driveways | Garages | Basements.

Which is better water based or solvent based concrete sealer? ›

Water-based sealers have a lower level of VOC (volatile organic compounds) content than a typical solvent-based sealer. This means it is less harmful to the person using the product, as well as the environment.

How often should you put sealer on concrete? ›

Sealing your concrete isn't really a labor-intensive, nor costly, job. By sealing your concrete every 2-5 years, as recommended by experts, you should keep your floor in good shape, preventing cracks, pitting, and additional damage.

How do you clean concrete before sealing? ›

Scrub the floor with trisodium phosphate (TSP) and water. Then collect the remaining water with a shop vacuum. Let it dry for at least 24 hours before applying the new concrete floor sealer.

Does concrete need to be cleaned before sealing? ›

While the only requirement is porosity, we typically recommend cleaning the concrete before sealing to avoid trapping any stains or making them harder to clean later. If pressure washing is possible, it is the best way to clean your concrete without the risk of discoloring the surface with a chemical cleaner.

Do you have to acid wash concrete before sealing? ›

The acid washing of concrete is a requirement after the concrete has cured sufficiently, in order to remove surface efflorescence and to open the pores before sealing. This will help the sealer to penetrate and result in a superior bond between the sealer and the surface.

Does concrete sealer strengthen concrete? ›

The application of a sealant helps extend the life of outdoor concrete by making it more resistant. It reinforces the density and hardness of the material, significantly increasing its tensile strength. This helps prevent cracks, scaling and water damage.

What is the cheapest way to seal concrete? ›

Epoxy is the most cost-effective of these floor coatings and is thicker than acrylic, providing more protection for your floor.

What is better concrete sealer or epoxy? ›

Epoxy coatings are more durable than concrete sealers and can resist chemicals, oil, and grease damage. Epoxy coatings are also applicable to creating decorative designs on your concrete surface. In addition, epoxy coatings apply to both new and old concrete.

How much does a 5 gallon bucket of concrete sealer cover? ›

Coverage: For best results apply Concrete Sealer at a rate of 200 square feet per gallon (950 square feet per 4.75 gallon pail). Concrete Sealer is a professional grade 100% Acrylic water-based clear drying emulsion. It is designed to seal and protect both interior and exterior concrete surfaces.
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Is it better to pour concrete in hot or cold weather? ›

Temperatures for Pouring Concrete

Elements like volume changes, cracking, humidity, wind speed, and temperature all should be accounted for when pouring concrete. Experts agree that the best temperature for pouring concrete is between 40 °F and 60 °F.

Does spraying water on concrete help it cure? ›

Properly curing your concrete improves strength, durability, water tightness, and resistance for many years. The first 7 days after installation you should spray the slab with water 5-10 times per day, or as often as possible. Once the concrete is poured the curing process begins immediately.

Is there a difference between concrete and cement? ›

What is the difference between cement and concrete? Although the terms cement and concrete often are used interchangeably, cement is actually an ingredient of concrete. Concrete is a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement.

What is the best temperature to seal concrete? ›

Most manufacturers recommend 50 to 90 degrees as the ideal temperature range for applying concrete sealer.

Does power washing remove concrete sealer? ›

A strong enough power washer will blast most types of sealer off of concrete with ease. The trick is to make sure to pressure wash the entire surface area. For more sturdy sealers, it may take a few passes with the pressure washer to get it completely removed.

What happens if concrete sealer gets wet before it dries? ›

Second, the concrete surface must be dry at the time of sealer application. If a polyurethane sealer comes in contact with moisture, a chemical reaction takes place, causing bubbles and foam.

Which concrete sealer lasts the longest? ›

Epoxy concrete sealers are the most durable, making them good for sealing garage floors and high-traffic retail environments. Softer acrylic sealers, which require a sacrificial floor wax, are more affordable and popular for residential concrete floors, including basements.

Can I apply 3 coats of concrete sealer? ›

Penetrating concrete sealers usually require two coats of sealer applied wet-on-wet. What this means is the second coat is applied on top of the first coat while the first coat is still wet. You do not want to apply a second coat after the first coat has dried or the first coat will try to repel the second coat.

What sealer sticks to concrete? ›

Concrete Silicone 2 sealant is a high-performance, 100% silicone and 100% waterproof sealant ideal for concrete, mortar and stone projects.

Do you need to seal indoor concrete? ›

No matter if your concrete flooring is in your office, domestic kitchen, living area, or commercial space, it needs to be sealed properly.

Do you have to seal indoor concrete floors? ›

No decorative concrete floor installation is complete without the application of a sealer. Taking the time to put down this final layer of protection not only prolongs the life of your floor, but can also enhance and preserve its appearance.

What is the best concrete slab sealer? ›

Essential Top 10: List of Concrete Floor Sealers
  1. Armor AR350. ...
  2. Clear-Seal™ Acrylic Urethane Coating. ...
  3. EnduraSeal 100% Acrylic “Wet Look” Semi-Gloss. ...
  4. Decra-Seal Natural. ...
  5. Industra-Seal 117A. ...
  6. Floortex™ Polyaspartic Garage Floor Coating. ...
  7. PS101 Siliconate Multi-Surface Sealer. ...
  8. ToughCrete Concrete Sealer.
13 Nov 2020

What do professionals use to seal concrete? ›

Epoxy. Also known as polyurethane sealers, epoxy sealants cost more than acrylic ones. However, rather than providing a soft finish that lasts one to three years, a quality epoxy sealer can protect your concrete for five to 10 years.

Can you put concrete sealer on old concrete? ›

Before applying a new sealer, it's very important that you make sure the old one is completely gone. This is because any old sealer left on the surface of your concrete can impede the effectiveness of the newly applied sealant, preventing proper adhesion to the concrete surface.

How long does concrete sealer last on concrete? ›

How Long Will The Product Last? Acrylic topical coatings have the shortest lifespan, needing re-applied every 1-3 years. Epoxy and urethane systems last between 5-10 years, closer to 5 if the surface experiences heavy traffic.

› watch ›

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What is the best sealer for concrete basement floors? ›

When sealing basement floors and foundation walls the best concrete sealers to use are the Lithi-Tek 4500 primer followed by the Siloxa-Tek 8510 waterproofing sealer. If you are going to be installing flooring in the basement, it is best to use a moisture vapor barrier coating like the Vapor-Tek 440.

How do you seal old house concrete? ›

How to Waterproof Concrete Brick | Ask This Old House - YouTube

Which is better oil based or water based concrete sealer? ›

Although both types have advantages, water-based sealers' shorter cure time and eco-friendliness make it the better choice in many situations.

What is better concrete sealer or epoxy? ›

Epoxy coatings are more durable than concrete sealers and can resist chemicals, oil, and grease damage. Epoxy coatings are also applicable to creating decorative designs on your concrete surface. In addition, epoxy coatings apply to both new and old concrete.

What are the two types of concrete sealer? ›

There are two common types of sealers to choose from – film forming and penetrating, with each offering their own different benefits and each suitable for different applications.

Can you seal basement from inside? ›

Waterproofing a basement in the inside is a very popular option because it is done without major exterior excavation and, in some cases, can be done very quickly and economically.

Does concrete sealer strengthen concrete? ›

The application of a sealant helps extend the life of outdoor concrete by making it more resistant. It reinforces the density and hardness of the material, significantly increasing its tensile strength. This helps prevent cracks, scaling and water damage.

Is it better to roll or spray concrete sealer? ›

Rollers can also be used to apply sealer, but a sprayer will do a better job. Select the right type of sealer for the job – your main options are water-based sealer and solvent-based sealer.

Can you put concrete sealer on old concrete? ›

Before applying a new sealer, it's very important that you make sure the old one is completely gone. This is because any old sealer left on the surface of your concrete can impede the effectiveness of the newly applied sealant, preventing proper adhesion to the concrete surface.

What do you put between House and concrete? ›

The best way to fill a gap between a concrete slab and a wall is by first measuring the size of the gap. If it is ¼-inch (6 mm) or smaller, it can be filled with urethane caulk. If the gap is larger than 0.25 inches, press a foam backer rod into the gap, then fill the gap with urethane caulk.

Does concrete sealer really work? ›

Outdoor concrete sealers are not only worthwhile but necessary. Experts who recommend having a concrete surface sealed are doing their customers a big favor. Without this extra layer of protection, concrete will absorb moisture and may begin to crack, spall, flake, and discolor, among other things.

Does concrete sealer make it waterproof? ›

But if you expect a concrete sealer to do more than prevent water absorption, then you've made a distinction between penetrating water repellants and film forming sealers. If that's the case, all film forming sealers are also water repellants but not all penetrating water repellants are sealers.

How long does water based sealer last? ›

There are two types of acrylic sealers: water-based and solvent based, both of which have shorter life spans than both penetrating sealers and epoxies. They generally last 1 to 3 years.

How long does concrete sealer last on concrete? ›

How Long Will The Product Last? Acrylic topical coatings have the shortest lifespan, needing re-applied every 1-3 years. Epoxy and urethane systems last between 5-10 years, closer to 5 if the surface experiences heavy traffic.

What is the most durable concrete coating? ›

One of the more popular concrete coatings types is the Epoxy Coating. It has proven these coatings to be some of the most durable concrete coatings. Epoxy Coatings can be used for both interior and exterior applications, but most are used for interior or covered surfaces.

What is the cheapest way to seal concrete? ›

Epoxy is the most cost-effective of these floor coatings and is thicker than acrylic, providing more protection for your floor.

› how-choose-right-concrete-s... ›

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Hobby: Cosplaying, Inline skating, Amateur radio, Baton twirling, Mountaineering, Flying, Archery

Introduction: My name is Kimberely Baumbach CPA, I am a gorgeous, bright, charming, encouraging, zealous, lively, good person who loves writing and wants to share my knowledge and understanding with you.