We spend so much time crafting the perfect designs for our indoor and outdoor spaces. These arrangements need to be appealing and durable enough to stand the test of time. One way to ensure such high durability while maintaining equally captivating elegance is to use concrete for building those designs.
However, the maintenance of concrete includes some crucial parts such as sealing. Doing so keeps the porous surface safe from all potential damages including staining, corrosion and more.
For this reason, you need to use nothing less than the best concrete waterproofing sealer to get remarkable results!
Now, we’re here with an impressive list. Let us see how these sealers really help concrete and which one of them turns out to be the most ideal solution for your home!
5-GAL Armor AR350
5 out of 5
5 out of 5
Liquid Rubber Waterproof Sealant
4.5 out of 5
Rain Guard CR-0360
4 out of 5
MasonryDefender Penetrating Concrete Sealer
4.5 out of 5
Benefits Of Using Concrete Waterproofing Sealer
The material of concrete is porous in nature which means water gets inside it quite easily. As a result of this occurrence, concrete is often the breeding ground for mold and mildew growth. Being a victim of these, your surface can easily lose all its glory and turn greenish with discolorations soon.
To avoid them from growing on your concrete, you need to treat the surface with waterproofing sealer. Its formula will prevent the concrete from staying wet for too long and thus inhibit the mold growth.
Since waterproofing sealers protect the concrete from multiple common issues, the surface automatically enjoys a much longer lifespan than usual. It stays away from water damage, scaling, cracking, freeze-thaw damage and more. As a result, the concrete can last longer than the average life of 25 to 30 years.
Because of the protected surface, your concrete areas start to look much better and more appealing than usual. Some of them elevate the default color while some others retain the natural color while adding more gloss. You can pick the right aesthetic for you from all these varieties available among such sealers.
Increased Property Value
Investing in concrete waterproofing sealer will surely make your surfaces look better and last longer. This can be a good financial decision as well if you are planning to utilize the space for real estate. Doing such sealing treatments at regular intervals will increase its property value significantly.
If you are running on a tight budget, you will be happy to know that even the best concrete waterproofing sealer can come at a very economical price point. Especially, if you purchase five gallons instead of one, the average cost per unit decreases. As a result, you can get more done with more product and less price.
Top 12 Best Concrete Waterproofing Sealer Reviews
1. 5-GAL Armor AR350 Solvent Based Acrylic Concrete and Paver Sealer
The first sealer on our list comes from the brand of Foundation Armor who manufactures sealing and coating products for concrete surfaces. If you have been looking for something that works the best on such surfaces, this might be a great place to start!
This sealer has been produced maintaining the industrial level of requirements. So you can rest assured that you are getting the highest quality possible that suits even the professionals.
It is a solvent-based acrylic that will make the concrete and pavers look darker in order to make their appearance look wet. The resulting finish has a subtle gloss and can last for a long time against all odds.
Additionally, the formula will prevent those areas from yellowing which extends its durability even further.
For the interior surfaces, the sealer will last anywhere from 1 to 3 years, while it lasts 3 to 7 years for exterior surfaces.
Even if your concrete or paver surfaces have not been sealed yet, it can still work on these areas because of its self-priming nature. You can also make it work on similar surfaces that were sealed previously with a solvent-based acrylic product.
At first glance, the price point may shock you. However, it seems incredibly cost-effective once you see that one of these containers can provide you with five gallons of the product.
- Breathable non-yellowing solvent-based acrylic.
- Manufactured from non-recycled raisins.
- A self-printing sealer that lasts 3-7 years.
- Applicable to concrete and paver surfaces.
- Can reduce damage and deterioration.
2. Siloxa-Tek 8500 Ready to Use - 1 Gallon Penetrating Concrete Sealer
Even though it sounds like a mythical entity initially, Ghostshield is actually a brand of KreteTek which specializes in concrete sealers, densifiers and more of such products for both residential and commercial buildings.
All of them are carefully engineered in the lab by using advanced nanotechnology and creative chemistry to come up with the most effective formulas. One of these products is the penetrating water sealer for concrete 8500 that utilizes silane or siloxane for making your indoor and outdoor surfaces look flawless!
Its proprietary water-based formula blends siloxanes and silane in such a way that it can prevent potential damage and resist moisture intrusion at the same time. Using this transparent sealer will keep your concrete surface safe from deicing salt, mold, mildew, cracking, pitting, spalling, freeze-thaw damage and chloride.
Since it is hydrophobic in nature, the sealer also actively resists vapor transmission and moisture intrusion. When it has dried up, you will not see any visible change and thus you can happily preserve the original appearance of your thoughtfully designed concrete area.
Each container of the Siloxa-Tek 8500 carries a gallon of the best penetrating concrete sealer which can cover up to 250 square feet in a single coating.
- Proprietary water-based formula meeting industrial standards.
- Engineered silane or siloxane to reduce moisture intrusion.
- Protects the surface from chloride and deicing salt damage.
- Resists mold, mildew, cracking, freeze-thaw damage and more.
- Each gallon can cover up to 250 square feet in a single coating.
3. Liquid Rubber Waterproof Sealant | Best Waterproof Sealant for Concrete
The Canadian company of Liquid Rubber started its journey in the early 2000s. Since their inception, Liquid Rubber has been focused on developing construction products which do not harm the environment. After 20 years, they still stay true to that objective by always keeping the formulas free of all VOCs and solvents.
So it comes as no surprise that their cement waterproof sealer has also been made to be environment-friendly by excluding those harmful materials. As a result, you don’t have to wear a breathing apparatus while applying the sealer. It is also safe for your loved ones - be it people or pets.
You can easily consider this to be the best concrete waterproofing sealer that can retain itself for a long time. The UV-stable & Waterproofing final membrane has the power to stop the sun, water damage, and also to prevent adhesion failure.
This black colored sealer comes in three sizes of a quart, a gallon and five gallons. So you can easily pick the one most suitable for your indoor or outdoor concrete area.
For vertical surfaces, you can cover 30 square feet per each gallon by applying it in 3-4 heavy coats. The resulting membrane will be 30-mil in thickness. In the case of flat surfaces, one gallon of the sealer can cover 15 square feet if you apply it in 4-5 heavy coats to achieve a 60-80 mil membrane.
- Comes in sizes of 1 quart, 1 gallon and 5 gallons.
- Can be used for both indoor and outdoor application.
- Environment-friendly formula with no solvent or VOC.
- UV-stable final membrane prevents adhesion failure.
- Back sealer that is safe for both pets and humans.
4. Rain Guard CR-0360 Micro-Seal Concentrate Sealer
If you have been looking for a sealer that can work on other surfaces in addition to concrete, this Micro-Seal Concentrate sealer from Rain Guard will probably rank quite high on your list. Along with applying it on concrete surfaces of your house, you can also use the sealer on concrete countertop, porous wood and other masonry materials as well.
Like many other items on our list, this transparent water-repellent sealer is also water-based. No matter what orientation of a surface you apply it on - vertical or horizontal - it repels the water and stays 100% breathable.
After application, it neither alters the appearance nor leaves a film on the surface. It has been produced using a special formula that utilizes the technology which prevents the surface from becoming yellow and shiny. The sealer will also keep the area safe from anti-freeze stain, oil stain, gas stain, mold and mildew growth.
You can find this technologically advanced concentrate sealer in three sizes of a quart, a gallon and five gallons. This array of different sizes seems very reasonable to satisfy the most common consumer requirements. Remember that each quart of this product will be able to cover about 750 square feet of the area.
- Comes in three sizes of 1 gallon, 5 gallons and 1 quart.
- Penetrating sealer made of silane and siloxane.
- Transparent breathable water-repellent formula.
- Resists stains made by oil, gas and anti-freeze.
- Each quart covers 750 square feet of surface.
5. MasonryDefender Penetrating Concrete Sealer
As the brand name suggests, Masonry Defender is dedicated to protecting all your outdoor masonry surfaces from various damages. You can use this transparent sealer to coat the concrete surfaces for achieving the non-glossy finishing through a nearly invisible layer of the product.
It is mainly meant for treating outdoor spaces like patios, sidewalks and driveways made of concrete. After application, you will not observe alteration in appearance or residual left on the surface. However, if the substrate is dense, it may get slightly darker. Ideally, it should last for as long as five years!
The breathable non-film forming sealer will keep the area safe from common concrete surface issues like pitting and cracking. Its formula fights against freeze thaw damage, efflorescence stains and de-icing salts or chloride ions. Such protection works best for horizontal exteriors made of above-grade concrete.
Its formula is made of silane and siloxane which doesn’t harm the environment. This eco-friendly penetrating concrete sealer can bond with the minerals present in the surface and extend the layer’s durability.
You will find this penetrating sealer in two sizes of 1 gallon and 2.5 gallons. Each gallon is capable of covering 90 to 150 square feet areas only. That is why it comes at an incredibly affordable price point.
- Comes in two sizes of 1 gallon and 2.5 gallons.
- Transparent non-glossy breathable sealer.
- Eco-friendly formula with silane and siloxane.
- Protects against dirt, oil stains and de-icing salt.
- Meant for outdoor concrete and masonry surfaces.
6. Armor AR500 High Gloss Solvent Based Acrylic Concrete Sealer
Another popular concrete water sealant made by Foundation Armor is the AR500 model. Similar to its predecessor on our list, this one also promises to provide durable high gloss while protecting the surface from multiple damages.
The solvent-based formula keeps the surface breathable while successfully penetrating through its high solid molecules. It claims to introduce an unmatched bonding with each layer of its acrylic coating.
With its special characteristics, the sealer works relentlessly against all major harmful factors. You can rely on it to keep the surfaces safe from abrasion, extreme temperatures, UV rays, hot tire pick up and more. Its fight against these entities continues for a long time and thus makes it a durable solution.
To be more specific, the high gloss finish should last for up to 2 to 5 years if you apply it in two layers. After this time period, you may need to reapply it for bringing back the shine on faded and dull areas.
This sealer can be used on concrete pavers, poured concrete, stamped concrete, aggregate and many other varieties. You can also apply it on unsealed surfaces and the ones which have been sealed previously using a similar solvent-based acrylic. It comes in a wide array of colors to suit your space just right!
- Solvent-based, breathable acrylic coating.
- Can penetrate high solids with superior bonding.
- Resists UV rays, abrasion, and extreme weather.
- High gloss finish lasts long up to 2-5 years.
- Applicable on different concrete surfaces.
7. Olympic Stain Waterguard Waterproofing Sealant
Olympic is a globally renowned brand that has been serving its consumers since 1938. Needless to say that it is one of the most trusted names in the market due to the high quality it delivers through all of its products.
Among its extensive range of products, one category is Olympic Stains which focuses on resurfacers, wood cleaners and exterior stains. The Waterguard sealant belonging to this category aims specifically at keeping your area safe from water damage and mildew growth.
In addition to being a concrete water seal, it also works on many other surfaces like brick, wood and stucco. You can use it to treat both interior and exterior spaces of your home.
Make sure that the temperature of that area is between 40 and 90 degrees in Fahrenheit before application. The most optimum values in this range are 50 to 85 degrees Fahrenheit. Once applied, it should take about 12 to 14 hours to dry completely.
This is one of the most affordable waterproofing sealants you will come across. It comes in two sizes of one gallon and five gallons to suit different requirements. Each gallon can cover anywhere from 100 to 350 square feet based on the surface texture and porosity.
- Penetrates and protects from water damage.
- Extends durability by resisting mildew growth.
- Works for many surfaces other than concrete.
- Made for both indoor and outdoor application.
- Each gallon covers about 100 to 350 square feet.
8. ToughCrete Concrete Sealer (Covers 600SqFt) | Best Waterproof Concrete Sealer
ToughCrete is one of the most popular products developed by Quest Chemicals. This sealant can be described as a concentrated water-based emulsion that uses silane or siloxane as its primary ingredient. The main objective of this sealer is to repel water and salt from the porous surfaces.
It offers much more effectiveness than a topical coating by penetrating into the substrate and creating a chemically bonded polymer network. This formula creates a hydrophobic barrier that doesn’t let water or salt get into the surface anymore. But the substrate can still breathe since the vapor can enter and exit it.
You can use this milky white sealer on common construction surfaces like concrete, stone, masonry, block and others. It does not make the applied area glossy and is free from any harsh solvent or toxicity. You will not observe any yellowing afterward. However, a minimal alteration of color might happen.
The sealer is available in two sizes and packaging. You can either get it in one gallon jugs or five gallon pails. Each gallon covers up to 250 square feet of concrete, 175 square feet of brick and 100 square feet of split face block. It is safe for the environment and is approved by the Department of Transportation.
- No-gloss penetrating sealer made of siloxane.
- Prevents damages from water and salt.
- Can protect the surface for over 10 years.
- Eco-friendly formula approved by DoT.
- Each gallon covers up to 250 square feet.
9. Armor WL550 1 GAL Matte Wet Look Enhancer Sealer Pro
If you want professional grade sealing on your concrete patio, driveway or similar surfaces, Armor WL550 would be a great solution for that. It especially works well for those who prefer a wet look for their surfaces. The formula is solvent-based in nature and darkens the sealed substrate to make it look wet.
In addition to concrete, you can also use it on other surfaces like pavers, brick, slate, stone and porous masonry. There will be no gloss on the surface after the application is done since this sealer aims at creating a matte finish.
The water-repellent feature helps the substrate to reduce its water absorption by 95% and prevent other damages like cracking, pitting, spalling, staining, mildew, mold, algae, etc. So you can ensure all-around protection for a variety of surfaces with this one sealer!
It is made from non-recycled resins to be safe for the environment. Because of its eco-friendly nature, this UV-resistant breathable sealer has a low VOC. Besides, it will not leave a surface film since it works entirely below the surface.
You can find it in two sizes of one gallon and five gallons. Each gallon can provide a coverage of up to 175 square feet on porous surfaces and up to 225 square feet on smooth surfaces in one coat.
- Water-repellent formula reduces damages.
- No surface film left behind after application.
- Breathable and eco-friendly with low VOC.
- Durable coating lasts for up to 3-5 years.
- Will make the unsealed surfaces darker.
10. Rubberseal Liquid Rubber Waterproofing and Protective Coating
Rubberseal is a brand of the Floridian manufacturer called Inflow Solutions who has over two decades of experience in the coatings industry. Unlike many of its competitors, this brand offers plenty of variety to choose from in terms of both colors and sizes.
It is one of the most versatile waterproof concrete sealers you will find out there which caters to a wide range of consumers. For starters, it can bond to most materials including concrete, wood, steel, plastic, glass, PVC, stucco, drywall, Styrofoam, stucco and polyethylene.
You don’t have to restrict yourself to only one shade since the sealer comes in five beautiful and essential colors. In addition to the usual transparent one, it is also available in white, light gray, dark gray and matte black. So you can just gloss over the current surface or give it a subtle makeover by introducing a new shade!
This eco-friendly sealer is made to be self-healing and puncture-resistant. It scores low in terms of both VOC and odor. The coating lasts a long time by releasing absorbed heat, decreasing heat penetration, reflecting solar radiation, reducing ambient air temperatures and lowering energy consumption significantly.
It is available in four sizes of 1 gallon, 2 gallons, 5 gallons and 1 quart to suit all levels of waterproof sealing requirements.
- Comes in four sizes and five colors.
- Resistant to UV exposure and aging.
- Eco-friendly for low VOC and low odor.
- Rated by EPA for Energy Star program.
- Self-healing and bonds to most materials.
11. Eco Advance EACON16CON Waterproofer | Best Concrete Waterproofer
As you can guess from its name, Eco Advance is a brand dedicated to developing products which do not harm the environment in any way. It specializes in sealers, water repellents and cleaners.
One of its most popular products is this siloxane water sealer for concrete. The ideal materials for its application include brick, natural stone, artificial stone, stucco, pavers, eifs, split-face block and more.
Unlike most other items on our list, this one is actually a liquid concentrate and not the ready-to-go sealer. This means, you will need to mix it with clean water in either a sprayer or a container that can hold one gallon. The 16 oz product present in each unit is meant to produce one gallon of siloxane sealer.
This non-toxic non-flammable sealer is low in both odor and VOC. You can use it in the presence of humans and pets without making any particular arrangement for ensuring their safety. The water-based breathable barrier keeps plants and grass safe as well without staining the surface.
It will fight against mold, mildew and algae while staying breathable for the surface. Each gallon of this sealer can provide the coverage of 100 to 300 square feet. After application, you will need to wait for a couple of hours at most to let it dry.
- Liquid concentrate formula for one gallon.
- Eco-friendly due to low VOC and low odor.
- Breathable waterproofer makes it durable.
- Works on many surfaces along with concrete.
- Provides coverage of 100 to 300 square feet.
12. DryWay Water-Repellent Concrete Sealer
RadonSeal is a brand of concrete sealers that has been on the market since 1997. One of their most popular products is DryWay which particularly targets bringing in water-repellent characteristics to the surface. You can protect the concrete from water damage, freeze-thaw, chemical spills and road salts with this sealer.
It is a penetrating sealer made of silane and siloxane that builds a barrier below the concrete surface which continuously repels water. As a result, the area stays sealed against deep water penetration while not trapping any moisture within the substrate. Therefore, the material can breathe freely while not losing its quality.
In addition to all these, the sealer also keeps the area safe for both vehicular and foot traffic due to its slip resistant characteristics. It beads vehicular fluids, chemical spills and surface water. Any unsightly efflorescence is reduced after its application.
You will not observe any unnatural appearance on the surface since it doesn’t form films and maintains the authentic look. You can use it in both interior and exterior areas. After applying this sealer, you may not have to reapply it for the next seven years!
Each gallon of DryWay sealer can cover 150-200 square feet of poured concrete, 80-120 square feet of concrete blocks and 50-150 square feet of bricks or pavers.
- Penetrating silane and siloxane sealer
- Meant for both interior and exterior use
- Works on multiple masonry surfaces
- Water-based formula can last up to 7 years
- Provides five gallons in each container
Comparison Chart For Top 12 Waterproof Sealant for Concrete
175 / gallon
250 / gallon
1 quart, 1 gallon, 5 gallons
30/gallon (vertical), 15/gallon (flat)
1 quart, 1 gallon, 5 gallons
750 / quart
1 gallon, 2.5 gallons
1 gallon, 5 gallons
1 gallon, 5 gallons
1 gallon, 5 gallons
1 quart, 1 gallon, 2 gallons, 5 gallons
150-200/gallon (poured concrete), 80-120/gallon (concrete blocks)
Choose Right Waterproof Concrete Sealer: Buying Guide
One of the most impactful aspects of choosing a waterproofing sealer is how it affects the appearance of your concrete after application.
The solvent-based sealers tend to make the original color darker and leave the surface looking wet with a glossy finish. Due to this effect, you may not be sure of the resulting color beforehand. Besides, these sealers have a higher possibility to leave streaks or bubbles in the finished surface.
Water-based sealers on the other hand don’t bring any alteration to the default appearance and can deliver glossy or matte finish depending on the respective formula.
Since most reliable sealers don’t come cheap and applying them requires a considerable amount of effort, it would be wise to choose a concrete sealer whose effect lasts for a long time. On average, the good acrylic sealers tend to last about 2 to 3 years.
However, with proper maintenance, this time period can be extended to as long as 10 years for some high-quality sealers! So keep the longevity of your chosen sealers in mind before making the final decision.
Ease Of Application
In terms of application, sealers can come in multiple forms to suit different needs. The most common of them is the ready-to-use variety which you can either spray or roll on the target surface. This is the easiest form of application available in the market. Other types include mixing the packaged sealer with water to prepare it.
If getting it done within a particular timeframe is important to you, then you need to look for sealers that have minimum drying time. This is the period required by a sealer before it can handle light levels of foot or vehicular traffic.
Acrylic sealers offer the highest efficiency by drying to the touch within an hour of the application and then 11 hours more after the final coat has been completed. Other types that rely on epoxies or polyurethanes must be left alone for at least 24 hours for drying up properly.
The coverage of each sealer differs from the other due to their unique formulas. Usually, one coating of a penetrating concrete sealer should cover about 100 to 400 square feet. This area, of course, reduces when the number of coatings increases. So check the package of your chosen sealer for detailed information.
In order to protect our environment from further damages, many people prefer to go for a concrete sealer that meets their requirements while also being kind to nature.
If you believe in this ideology as well, choose the products which score low for VOC or volatile organic compounds. These gases can react with other pollutants in the air and then cause all living beings trouble. They are particularly dangerous for human beings since some of them can cause cancer.
A breathable sealer means that its formula allows concrete or brick surfaces to release any vapor trapped inside them.
This happens because some water does get through the pores even after sealing the surfaces. Its intrusion can be reduced but cannot be fully stopped. As a result, the trapped water turns into vapor and builds up inside the substrate. That is why sealers for any porous surface should always be breathable.
Indoors Or Outdoors
There are many concrete waterproofing sealers that can be used for both interior and exterior surfaces. However, some of them are limited to only outdoor use. This happens due to the stark differences between their textures, formulas and effectiveness. So pick your sealer keeping the location of your surface in mind.
While the sun is extremely useful for the sustenance of our species and other living beings on earth, its UV rays can prove to be quite harmful to the sealers that are made of UV-absorbent polymers. Some of these substances include almost all epoxies, styrene-acrylics and non-aliphatic polyurethanes.
Because they absorb the UV rays too easily, they can experience a photochemical breakdown which can degrade their quality. For all these reasons, 100% acrylic sealers make a much better choice due to its full transparency to UV light. They can protect your surfaces for a much longer time than others.
If the target area is a busy one where people and pets walk on often, you should get a sealer that is made to be slip-resistant.
Otherwise, they can suffer from injuries by moving on such a high-traffic area after the sealer has been applied. A sealer made to resist slips will avoid the possibility of such unfortunate incidents.
Types Of Concrete Sealer
You may often wonder - what is the best waterproofing for concrete? There are many types and each has different properties. Thus, the answer will vary according to your preferences and the requirements of your surface.
However, before deciding on that, you have to learn about the various types first, right? This segment will present them to you.
You must have heard of siloxane while searching for waterproofing sealers since it is a very common ingredient in such products. You can find them available at very economical price points which makes these sealers a great solution for those on a tight budget.
It is usually transparent and therefore maintains the natural look of your concrete surface. Its water-repellent feature can build a durable barrier protecting the area from liquid absorption and moisture.
As the category name suggests, penetrating sealers penetrate through the pores of concrete and seal them from below the surface. If you live in a place where the weather can get harsh frequently, you can rely on these sealers to protect the surface against it.
The sealer also prevents other damages like stains, freeze-thaw and de-icing chemicals. Using them you can protect your loved ones from slipping in wet conditions.
These sealers don’t let the water penetrate your concrete surface by building a barrier against it. They come in many forms like acrylic, epoxy and polyurethane. These varieties provide their own kind of intensity in shine while enhancing the color and highlighting the decorative beauty.
Acrylic makes up some of the most popular concrete sealers available in the market. It is much more affordable than other options and easier to apply. You can usually use it on both interior and exterior surfaces.
They are likely to offer more conveniences like UV resistance, non-yellowing, quick drying and protection against both chloride and water. The ideal surfaces for its application are pool decks and driveways. Acrylic sealers can further be divided into two categories as follows-
- Solvent-Based: Solvent-based concrete sealers tend to be quite glossy, durable and they enhance the color simultaneously. However, their VOC content is generally high which can harm your pets and family members, as well as the environment. Additionally, they also possess higher odor which can be disturbing.
- Water-Based: The water-based sealers are not as shiny as their solvent-based counterparts. They don’t last too long either. But they shine in terms of being safe for your loved ones and the environment. These sealers contain much lower levels of VOCs and odors which make them more pleasant choices in certain cases.
Epoxy sealers are meant to be used indoors for sealing the various parts made of concrete. It could be effective on your countertops, overlays, stained concrete and high foot traffic areas of your house. You can rely on them to provide a hard and durable finish in either transparent coating or colored ones.
The resulting gloss from them is either high or moderate but never zero. It can resist abrasion and has water-repellent qualities. Usually these sealers need to be mixed with something and then dry pretty fast. Therefore, you will need to be very quick in both its preparation and application.
Similar to epoxy, polyurethane sealers also provide impressive resistance against abrasion with their coating.
Additionally, they also protect the surface from harsh chemicals. Compared to acrylic sealers, they have twice the thickness and come in a variety of sheen levels. The finish stays intact for a long time without yellowing.
They are typically used on floors where traffic is always high, or on surfaces where the area needs more gloss. You can use it in both interior and exterior locations.
Stamped concrete sealers are known for being a very economical choice. It suits both indoor and outdoor areas where you can apply the coatings with utmost ease.
You can use them to get a durable finish that is also UV resistant, breathable and non-yellowing. The catch is that - it needs acrylic sealers for application.
People Also Ask (FAQs)
What Is The Difference Between Concrete Sealer And Concrete Waterproofer?
Answer: Regular concrete sealer is known to keep the surface safe by creating a protective layer over it.
On the other hand, the concrete waterproofers tend to penetrate into the surface pores and build the protective layer below it. So they both provide protection for your concrete surface in their own ways.
Is It Better To Spray Or Roll Concrete Sealer?
Answer: Most concrete sealers are meant to be sprayed since they come prepared and ready to be used on the target surface. It is more effective than rolling since spraying can provide the same coverage with half the effort. You can choose to roll the sealer if its solvents are made to evaporate slowly.
Can You Apply Concrete Sealer Over Old Sealer?
Answer: For those of you who already treated the concrete surface with a sealer, you will need to remove it completely using acid etching or grinding. However, if the new sealer is compatible with the old one, you can just apply the new one without erasing the previous layer.
Will Bubbles In Concrete Sealer Go Away?
Answer: Bubbles, blisters and similar defects can form on concrete surfaces treated by solvent-based sealers. One way to get rid of them, is making the surface wet with either xylene or acetone. This process or step is known as a solvent bath. However, too many bubbles may indicate that the sealer was too thick.
What Happens If It Rains On Concrete Sealer?
Answer: It is a good idea to check the weather forecast for the day to prevent rain ruining your fresh coating of concrete sealer. If it does rain on the surface, the ongoing crucial chemical reaction can get interrupted. You may observe stains of white or dark spots on the surface afterward.
How Many Coats Of Sealer Can I Put On Concrete?
Answer: If you are unsure about the number of coats to apply on your concrete surface, go for two coats. This is the safest suggestion since your concrete surface may not be able to absorb the first layer of sealer at the same rate. As a result, the substrate can seem to be sealed unevenly after application.
Applying a second coat over it will definitely erase that possibility and bring in a uniformly distributed sealer all over the concrete surface.
As you can see, finding the best concrete waterproofing sealer for your area really depends on what kind of surface you have there and what are your preferences for its finished appearance. You can choose to make it glossy and gorgeous, or matte and elegant.
There are plenty of formulas, brands and categories to choose from as well. Carefully go through their list of ingredients, precautions and coverage information to land on the most fruitful sealer for your concrete surface. With the right choice, the entire space can start looking brand new in no time!
If you don’t have previous experience in applying these products, feel free to hire some experts or friends to help you out. Otherwise, it may end up doing more damage than good to the surface and increase the work for you even more.
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