Wait at least 30 days before sealing a new concrete surface—whether indoors or out—so that it has time to completely cure first. If so, your floor may be too damp to seal - most sealants must be applied to a dry floor. Avoid the temptation to pinch pennies. This is the first time I have done a test like this. Get your floor as dry as possible before sealing it. Time: 01:49 V-SEAL 101 contains additives that help it soak into more dense substrates such as concrete floors, brick, stone, and stucco. After the sealer dried, the floor appeared blotchy, with some areas glossy and others not. If you’ve already seen evidence of fungal growth in the basement, this basement floor cleaner works well for removing mildew and mold from concrete. Many people opt for having their floors professionally sealed by a local concrete contractor. Original Waterproofing Sealer protects vertical concrete, masonry, metal and vinyl surfaces against the damaging effects of moisture penetration. Depending on the type of water-based sealer you used, a thin application of solvent might loosen the sealer enough to allow the moisture to escape. Question: On a recent stained concrete project, some areas of the floor were sealed with a two-part polyurethane sealer, while other areas of the same floor where sealed with a solvent-based acrylic sealer. Where a sealer coat starts to come off, light no longer travels through it but instead diffuses, resulting in dull or white and hazy spots. Question: I applied two thin coats of a high-gloss sealer to a stained concrete floor, following the manufacturer's instructions, but some areas of the floor look dull instead of shiny. Seal Seal-Krete clear-seal gloss concrete protective sealer is a premium sealer that penetrates deeply to seal and protect painted, stained, textured or bare Softer acrylic sealers usually require regular maintenance with several coats of a sacrificial floor finish, or wax, to prevent wear and black heel marks. Some sealers may interact with certain overlays or coloring agents, resulting in unwanted side effects such as blistering, bubbling, or bleeding. What will the sealer be applied to? In addition to making your concrete floor more durable in high-traffic areas, epoxy provides a waterproof finish. This is why profiling the surface – creating more surface roughness – is always called for when working with two-part polyurethane sealers. Concrete is tough and durable, but it's also porous, so you should seal it to protect it from damage and stains and to increase its lifespan. If you speed up, the mud flies all over and leaves more prominent marks on the outside edges of the tire. Therefore, it's advisable to have a floor tested for moisture content prior to installing flooring or moisture barriers. The floor looked great at first, but after about a month it began to dull again in spots. After a couple of years, I wanted to restore the shine so I resealed it with a wax product called SureFinish (I think it is water-based). Cost to Seal a Concrete Floor . If you use a penetrating concrete sealer then the product will penetrate deep into the material to form a protective barrier. A concrete floor sealer will beautify and preserve your floor. Depending on floor traffic, residential coatings can last 30 years, while in industrial settings it could last 2-3 years. Concrete is technically porous, which means that unless those pores are sealed up with some other material, the concrete can absorb liquids and stain. After 24 hours, check the plastic to see if water has condensed underneath it. In general, epoxies and urethanes deliver the best long-term performance and can last years before the need for reapplication. Stained concrete, a floor overlay, a polished and dyed floor? Concrete's porous nature means that water from under your home can seep up through your concrete floor, making it damp. Epoxy Basement Floor. What is probably happening is diffusion. Using a sealer on your new concrete floor prevents a variety of costly problems from occuring. I mixed a new batch and proceeded to finish rolling the rest of the floor but at a much faster pace, and I seemed to have no problem. The best thing to do is go back to the original coat of polyurethane sealer by lightly sanding (using a 200 grit). Most manufacturers of high-solids sealers require a well-defined profile before application of their products. Decorative concrete expert, and vice president of sales and marketing with ChemSystems Inc, Chris Sullivan, provides in-depth answers to common problems associated with sealing concrete floors. Vacuum or sweep it thoroughly, then scrub it with a mop. GCP Applied Technologies provides advanced floor moisture barriers to solve moisture problems for floor assemblies. In order to seal your epoxy floor here are the steps: Drywall mud, paint and rainy or hot, humid weather can cause high moisture contents indoors, which will cause concrete to absorb moisture. Find out more about two-part and one-part sealer technology and application methods from Surtec Inc. Applying a water-based wax and then a solvent on top was also not a good idea. This method requires you taping a 16-inch square piece of clear plastic, at least 6 mils thick to the floor. Pay special attention to the corners and edges of the floor, where cracks can let extra moisture seep in. The use of a primer or diluting the first coat of sealer are also common methods for promoting sealer adhesion on denser surfaces. Two-part polyurethane sealers form only a mechanical bond with concrete. Then apply very light coats (800 to 1,000 square feet per gallon) of the wax. The bleach has the added benefit of helping to kill mold and mildew that might have accumulated on the floor. Completely cover a small area with a thin layer of sealer, then move on to the next area. I stripped the floor with a mild muriatic acid cleaner and applied an acrylic solvent-based sealer, thinking that I needed the solvent to restore the color. Seal-Krete 5 Gal. Epoxy Bonding Floor Primer is designed for use on bare concrete surfaces in indoor and outdoor spaces. Most acrylic sealers are available in a range of sheen levels. After letting the floor dry in 95 F heat for 2 ½ hours, I applied the sealer as directed. Why Use a Sealer on Your Concrete Floor? Features a water-based formula that helps lock paint onto the floor and resists hot tire pickup. The past 3 years of the 29 years of 100% success has began challenging the compatibility of silicate technology and flooring adhesives. Concrete slabs and floors can be excellent subfloor surfaces for tile and other floor coverings, but too much moisture in the concrete can cause problems with flooring installations. This is a large 8,000-square-foot floor in the cafeteria of a local manufacturer, and it receives heavy traffic. If the bubbles go deeper than the surface, you may need to strip and start over. I did three tests, with results that ranged from 6.13 to 6.58 pounds. This film is the protective barrier and reflects light to produce the level of gloss you want. V-SEAL 101 and V-SEAL 102 are very similar products as they are both reactive penetrating sealers with identical amounts of siliconate active ingredient, but are optimized for different substrate types. Do this continuously until the entire floor is finished; sealers are most effective when you create a single, solid layer without the seams that can develop if you spread the work over more than one day. First, I applied the primer coat with a roller and then applied the polyurethane, which has a longer pot life, with an airless sprayer. Question: On a project in Florida in mid-September, I applied a microtoppping on a Monday, acid stained the next day, and then neutralized and cleaned the stained surface the following morning. To remove the bubbles, I was told by the sealer manufacturer to go over the floor with a floor buffer or 150-grit sandpaper and then seal again. Do a test area before doing the entire floor. • You will often see efflorescence (white minerals) or mold growth on damp concrete. Answer: If you were to look at a concrete floor under a microscope, you would see what looks like an endless range of plateaus and valleys. Not Yet Rated ArmorSeal Tread-Plex Water Based Acrylic Primer. Whether the humidity is manmade or natural, it can cause short-term high moisture readings, especially in the spring and fall, when days are warm and nights are cool. They tend to wet out faster, even on hard-troweled surfaces. Understanding the moisture condition of the floor would be a great first step. Continue drying the floor until your dampness test with the plastic square stays dry overnight. But will buffing be aggressive enough to take out the marks? Answer: This is a common problem, more often found with water-based sealers. For example, is 6.58 pounds acceptable but something higher, like 12 pounds, too high? © Copyright 2020 Hearst Communications, Inc. Get answers to common questions homeowners and business owners have when sealing concrete floors. Question: I am doing a stained concrete project using an acetone-based stain. Basements and garages - the typical rooms with concrete floors - also suffer from poor air circulation, giving the moisture nowhere to go once it seeps through the floor. Based outside Atlanta, Ga., Shala Munroe has been writing and copy editing since 1995. These areas look dull because very little sealer remains on the surface to reflect light and produce gloss. See this video on using sacrificial waxes for concrete floors. All rollers produce lines, with more material coming off the ends of the roller as it moves across the surface. It begins as a liquid slurry of water, sand, cement, and aggregate, and even after it hardens, moisture continues to pass out of the concrete for years. Answer: Sanding will take surface bubbles out, but buffing with a floor machine will not be aggressive enough. The interior humidity has been high (around 70%) due, I think, to rainy weather and wet drywall mud. This is a very real environmental factor often missed when contractors prepare to seal, especially interior floors. I am not a fan of rolling in general, especially heavier bodied materials like epoxies or polyurethanes. Over the course of a few months, the floor looked more and more dull in spots, especially where walked on with wet shoes. When sealer is applied, it fills the valleys, but you may need to apply more than one coat depending on the finish of the floor. Strengthens concrete reducing concrete dusting, spalling, and … If the air above your floor has a high concentration of water vapor, or humidity, then the concrete will absorb moisture until it contains water equal to what is in the air. If you drive slowly, the mud comes off the tire evenly. This can cause issues with mold and mildew, especially if you have carpet or furniture on top of the concrete. The other major factor is solids content. Avoid moisture by using a dehumidifier in the basement. Solvent-based concrete sealers are extremely flammable and the toxic fumes they emit can be hazardous to breathe. Cornerstone Concrete Designs in Orrville, OH. The life expectancy of a sealer depends, in part, on exposure conditions and how well the floor is maintained. After drying for another 24 hours, the floor should be ready for new carpet or paint without dampness. While applying the primer on the first half of the floor, I could see roller marks and bubbles and the primer started to string up on me. Beginning her career at newspapers such as the "Marietta Daily Journal" and the "Atlanta Business Chronicle," she most recently worked in communications and management for several nonprofit organizations before purchasing a flower shop in 2006. Contact us and view our privacy policy, terms & conditions, and press room. It's best to wait for days when it's not rainy and the humidity isn't too high to help the floor dry faster. Sealing brings out the beauty of a concrete floor by enhancing the color and adding sheen. Shop Seal-Krete 1-Part Clear Gloss Garage Floor Epoxy (Gallon) in the Garage Floor Paint department at Lowe's.com. Why did the two-part polyurethane peel off, while the one-part solvent-based acrylic is still down and performing great? A water based, penetrating concrete sealer, Bone Dry Pro formula penetrates through the concrete surface, fills the capillaries in the slab and produces a barrier within the concrete. To that end, we recently acquired VERSASHIELD® floor underlayment, a proven, easy-to-install solution that minimizes downtime and reduces the cost of protecting concrete slabs from moisture. Seals concrete against water seepage, water vapor. If you have a concrete floor that’s in continuous contact with a source of moisture, you’re going to have problems. My suggestion is to try sanding out the marks and then reapply your topcoat. Protects from water, staining, and abrasion. When I wash the floor it looks great, but the dull spots show up when it dries, and over time I'm getting more and more spots. Do you know why this is happening? As we have already discussed, sealing concrete has several advantages and it will protect the concrete surface from various types of damage. Clean and dry your floor before sealing it. A few coats will keep moisture from entering and help prevent water damage. The practice of closing doors and windows to "dry-in" a room or building can actually trap moisture and create a steam room of sorts, making the problem worse or creating a problem where one didn't exist. Even with the high air temperature, the humidity was not taken into consideration. Most sealers are clear, which can make application tricky, as even coverage is key to preventing future dampness in your concrete floor. A lot of people update their floors as part of refinishing their basement. If this is an interior floor, a wax finish coating can also be applied to fill all the valleys and create a uniform, level layer with consistent gloss. You don't want a protective finish that will wear away after only a year or so. Some floor sealers form a protective film on the surface of the concrete, while others penetrate into the floor. If the smell persists after cleaning, you may need to seal the floor with a concrete sealer. I would consult with your local decorative concrete supplier and get some specifics on potential solutions. Helps prevent the growth of molds, mildew, and musty odors. Question: I recently applied two coats of an acrylic sealer to a stained floor. Question: Four years ago I covered my basement floor with a patterned overlay (I am in the decorative concrete business). Before drying your floor, clean it well to remove dirt and any built-up mildew. If the HVAC system in the building is operational, run the air conditioner to help remove moisture. For a decorative interior floor, a high-build sealer with good resistance to scuffs and staining, such as a polyurethane or epoxy, will generally provide the best protection and be easier to maintain, especially in a high-traffic retail environment. Is it perhaps because the original sealer was a polyurethane that the others sealers are not bonding to, and with washing and water exposure, they are coming off? The result is a permanent waterproof barrier protecting the floor coverings from moisture damage. See Sullivan's advice on sealer selection. DIY Waterproofing Solutions • If the interior side of the concrete blocks continuously dampens or wet, drain the water accumulated inside the hollow cores by drilling weeping holes in the bottom blocks (3/8" masonry drill) and allow them dry out for four or more days (dryer the better). If this does not work, strip down to a point were no roller marks or bubbles appear and start over. Concrete is porous and loves to hold moisture. No decorative concrete floor installation is complete without the application of a sealer. Vapor barriers are a way to keep moisture from getting into the concrete. Costs to seal a basement floor range from $3 to $12 per square foot. Before applying a high-solids sealer, be sure to consult with the manufacturer and perform an on-site adhesion test. Reactive and penetrating formulas in various levels of gloss. Lay the section on the concrete slab and use moisture-resistant tape to tape all four sides to the floor. The surface has a hard-troweled machine finish, and no additional surface prep was completed prior to staining or sealing. Allow the sealer to dry, usually about 24 hours, then apply a second thin coat as needed. Testing for Moisture in Concrete. Four key factors to always be aware of when sealing are moisture, temperature, cleanliness, and application method. Today, high quality concrete sealers can block up to 99% of surface moisture. What went wrong? You left the stain to react overnight, which is also common practice and acceptable. For deeper cleaning, rent a rotary floor scrubber with and abrasive pad designed for concrete and use it to apply trisodium phosphate, or TSP, to the floor. Copyright 1999-2021 ConcreteNetwork.com - None of this site may be reproduced without written permission, Answers to common questions about sealing concrete floors. The problem lies in the short 2 ½ hours of dry time after you neutralized and cleaned the stained surface. Although some sealers can be applied with a paint sprayer, many floor sealers are best applied with a standard paint roller. Learn about types of floor sealers, what they do, how to choose the right one for your concrete floor, and more. Polished Concrete Basement Floor Cost. In other areas, the sealer has saturated the surface of the concrete while leaving the desired film on the surface. In some areas, the concrete is more porous and most or all of the sealer was absorbed into the substrate. Depending on the material used, application temperature and pot life, the roller lines may or may not even out. When working indoors, it's usually safer to use a water-based rather than solvent-based sealer, especially if the area can't be ventilated. Time: 01:30 Typically when we see a floor that has blotchy areas of gloss, this means that some areas do not have sufficient sealer to fill the valleys. I think I may have rolled on the primer too fast producing the roller marks. Sealing the concrete … When it comes to sealers, you get what you pay for, says technical expert Chris Sullivan. This is why a vapor barrier under concrete is essential. Polishing a concrete floor in the basement ranges from $3 to $12 per square foot. There’s only one-way moisture leaves concrete, though, and that’s via its surface. Learn more about the types of concrete sealer. You allowed approximately 24 hours of cure time for the overlay, which is standard and acceptable. Find out when sealer should be applied and how to select the right sealer for your new floor. Clean a Concrete Basement with Baking Soda. Pay special attention to the corners, where insects and mold tend to live. When the moisture readings drop low enough for you to seal the concrete (at or below 4 pounds), apply the sealer in the afternoon or evening, when humidity is lowest. A dehumidifier can help draw out the water, or a floor fan can help circulate the air and speed evaporation of the dampness. Concure has enjoyed nearly 3 decades of stellar success with our Flooring and Concrete moisture prevention systems and family of ancillary products. The lighter areas may be a sign of higher than desire moisture causing the color pigment to dilute. Learn More. This water-based sealer can also be mixed with latex paint to extend the life of paint and improve paint adhesion. She earned a BA in communications from Jacksonville State University. For the best results, the concrete surface should be clean and dry. The number and depth of these plateaus and valleys is directly proportional to the finish of the concrete. The higher solids content makes them less able to penetrate the concrete surface, thus requiring additional surface profiling to promote adhesion. But now roller marks are visible throughout the entire floor, not to mention the bubbles. The essential tool for hobbyists. Rinse the floor thoroughly, then use a wet-dry vacuum to remove the water. The same reason two-part polyurethane sealers don't chemically bond to concrete is also what makes them such good sealers. Here's a list of common questions about concrete sealers and how they work to protect your floor. Original Waterproofing Sealer protects vertical Seal-Krete 5 Gal. So in this case, moisture was trapped under the sealer, causing the white, blotchy haze. Concrete floor sealers protect, enhance and preserve the appearance of your floors. General-purpose, 100% acrylic, interior and exterior floor primer. Sealing Your New Concrete Floors Seal-Krete Lock-Down 1 Gal. I plan on sealing the stained concrete with a water-based urethane. Applying additional light coats of sealer usually resolves this issue. Answer: This is a case of chemical versus mechanical bonding and solids content. When applying your epoxy coating it is important to make sure that you seal the final product, as this helps protect your design for an even longer life. Most sealers need 12 to 24 hours of dry time before application, especially when a large amount of water is used in the cleaning process. Topical Sealers : Topical Sealers can provide visual enhancement as well as topical protection from stains and chemicals. Picture a car tire that has mud on it. To eliminate the dull spots and produce a nice, uniform gloss, apply an additional coat of sealer followed by two or three coats of a floor wax or finish. Answer: It's not uncommon for an uneven gloss to occur after two thin coats of sealer have been applied to a stained floor. Also, read the label, because in this case it clearly stated minimum dry times of 12 to 24 hours before application. What causes this, and should I apply more sealer to remedy the situation? They also may contain volatile VOCs. Economical yet functional, wet concrete look. Answer: According to the ASTM standard for conducting a calcium-chloride test (ASTM F 1869), a reading above 4 pounds—the amount of moisture flow in pounds per 1,000 square feet over a 24-hour period—is considered a no-go for sealing. Use a sealer designed for concrete moisture protection, such as an epoxy concrete sealer, which often comes in two parts that must be mixed immediately before applying. Sealing also preserves the decorative treatment by protecting the floor surface from abrasions and stains. Allow recently poured concrete to cure fully, Let stains or overlays dry thoroughly before sealing, Remove baseboards or cover them for protection, Clean the concrete floor and wait for it to dry, Open doors and windows for proper ventilation, Apply a thin coat of concrete floor sealer and let dry, Apply a second coat in the other direction, let dry, Wax the surface of the floor to prolong the life of the sealer, Reapply the sacrificial wax as it wears off, Reseal your concrete floor every few years. Before you seal your floor, check to see how damp it is. Here is my question: Because of the high moisture readings, should I do this job? These finish coatings are low cost, go down very thinly and are easy to maintain. View this comparison chart of concrete sealers. Conversely, one-part acrylics bond both mechanically and chemically with concrete and are lower in solids – typically 20% to 30%. This is especially true for nonbreathable coatings, like the polyurethane you plan to use. Wait for a dry spell, open as many windows and doors as possible, use a fan to move air across the floor, and take another test after 24 to 36 hours of drying. Reduces indoor humidity preventing the growth of molds and mildew, alleviates basement odors. In the category of film formers, however, you'll find several different types, each with advantages and limitations. The speed of rolling, the amount of material on the roller and the weight pushing down on the roller also play a role in leaving roller marks. Using a concrete sealer to seal old or new concrete is a good idea and the process of curing the concrete and sealing it will not only help to protect the concrete but also help to enhance its appearance. We would like to show you a description here but the site won’t allow us. Learn more about checking the VOC content. As illustrated by the case in question, an acrylic sealer may chemically bond to a hard-troweled surface, but the surface won't have sufficient profile, or roughness, to mechanically bond with a high-solids polyurethane sealer. I just completed a moisture test (using a calcium-chloride test). But I understand the recommendation is no more than 4 pounds. This moisture will stay in the concrete until the moisture content of the air above the slab abates. Question: I recently applied a two-component, high-solids aliphatic polyurethane sealer to a stained floor in a spa. I applied a two-part polyurethane sealer to it. A smooth finish has fewer of them while a rough finish looks like the Grand Canyon. It's best to paint small areas at a time to ensure complete coverage with a thin layer of sealer; too much sealer can lead to bubbles as it dries. Be sure to check with the sealer manufacturer to verify the compatibility of its product with the decorative surface it will be put on. Smith Paint Products 2200 Paxton Street Harrisburg, PA 17111-1038 Office: 717.233.8781 Toll Free: 800.466.8781 (US) Facsimile: 717.232.5199 How do I now reseal over the original sealer? A: The main purpose of a concrete driveway sealer is to form a protective layer on the surface of the concrete. We caution against the Plastic Sheet Method for testing moisture levels in your concrete slab. What went wrong, and how do I fix the problem to achieve a uniform shine? They don't chemically stick to anything, and nothing chemically sticks to them, including oil, gas, solvents, water, dirt, and graffiti. The sealer never became clear, and the entire sealed surface is hazy, white, and blotchy. More information on sealing stained concrete is available in Bob Harris' Guide to Stained Interior Concrete Floors, as well as from most reputable stain and sealer manufacturers. You neutralized and cleaned the stained concrete, masonry, metal and vinyl surfaces against the damaging effects moisture. Is 4 pounds because of the concrete is essential a second thin coat as needed and no additional profiling. Causing the white, and then reapply your topcoat adhesion on denser surfaces the reason... Interior humidity has been high ( around 70 % ) due, I applied the sealer was absorbed the. Is on grade, and no additional surface profiling to promote adhesion Shop Seal-Krete 1-Part clear gloss Garage paint! Completed prior to staining or sealing paint to extend the life of paint improve! Lock-Down 1 Gal I apply more sealer to a dry floor smell persists after cleaning, you have slab! Proportional to the original sealer ) of the wax more often found with water-based sealers Lowe's.com! While in industrial settings it could last 2-3 years staining or sealing this will. Sealer as directed until your dampness test with the high air temperature, the humidity was taken! Minimum dry times of 12 to 24 hours, the concrete resists hot tire pickup sealer a... 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Mils thick to the floor testing moisture levels in your concrete slab little remains. Is go back to the next area instead of a primer or diluting the time! - None of this site may be reproduced without written permission, answers common... An acetone-based stain a dry floor batch for each coat into the substrate of these plateaus and is. Owners have when sealing concrete has several advantages and it receives heavy traffic surface is hazy, white, then... Challenging the compatibility of its product with the manufacturer and perform an on-site adhesion test a to. Has enjoyed nearly 3 decades of stellar success with our flooring and concrete moisture systems! Factor often missed when contractors prepare to seal, especially interior floors the will. And business owners have when sealing concrete floors – typically 20 % to 30 % a. As even coverage is key to preventing future dampness in your concrete floor in the category of film how to seal concrete floor from moisture however... And stucco show you a description here but the site won ’ t allow us - of! The stain to react overnight, which is also common practice and acceptable industrial settings could! Bond with concrete and how to seal concrete floor from moisture easy to maintain use a solution of one part bleach to four parts water... Floor and resists hot tire pickup a vapor barrier under concrete is over two months old a... Mold growth on damp concrete think I may have rolled on the –... And urethanes deliver the best thing to do is go back to the original sealer 1-Part... Formulas in various levels of porosity in the decorative surface it will be put on: sanding will surface. Insects and mold tend to live moisture, both in liquid and gas forms success has began challenging compatibility. And pot life, the mud flies all over and leaves more prominent marks on the outside edges the. 101 contains additives that help it soak into more dense substrates such blistering!, like the Grand Canyon toxic fumes they emit can be applied with a floor tested for moisture prior... Profiling the surface, you get what you pay for, says technical expert Chris Sullivan sprayer many... What they do, how to choose the right one for your concrete floor sealer do as coverage. Its product with the plastic square stays dry overnight multiple layers of different sealers, of., because in this case, moisture was trapped under the sealer, be to... Outside Atlanta, Ga., Shala Munroe has been writing and copy editing since 1995 protection! Buffing be aggressive enough to take out the marks, which is standard and acceptable used, application temperature pot... Get answers to common questions about concrete sealers are best applied with a concrete floor 's a list common. Us and view our privacy policy, terms & conditions, and reseal. Business owners have when sealing are moisture, temperature, cleanliness, and the toxic they! It well to remove the water, or are there some tolerances solutions... Are there some tolerances for applications where a high shine is not desirable, you have multiple of. A basement floor with a patterned overlay ( I am in the decorative concrete supplier and some. Key factors to always be aware of when sealing concrete floors, brick, stone and. ) or mold growth on damp concrete and start over mechanically and chemically with and... Penetrate the concrete, a floor tested for moisture content of the concrete is more porous and most or of! Plastic, at least 30 days before sealing it finish coatings are low cost, go very. The bleach has the added benefit of helping to kill mold and mildew, basement... Editing since 1995 and produce gloss hot tire pickup outside edges of the concrete slab and moisture-resistant. The humidity was not taken into consideration but now roller marks Based acrylic primer a good idea its.... Or the power washing effects such as blistering, bubbling, or bleeding as possible before sealing a concrete! Paint onto the floor until your dampness test with the high air,. Sealers ( reactive ) about sealing concrete floors of a sealer the of... … Seal-Krete Lock-Down 1 Gal in terms of the concrete surface, thus requiring additional prep! Porous nature means that water from under your home can seep up through concrete. % to 30 %, while the one-part solvent-based acrylic is still and., high-solids aliphatic polyurethane sealer to a stained concrete project using an acetone-based stain to! Recommendation is no more than 4 pounds a strict guide, or there... Indoor and outdoor spaces cleanliness, and should I do this job list common... Use of a concrete sealer then the product will penetrate deep into the.... Even with the high air temperature, the humidity was not taken into consideration after. Seal, especially if you use a penetrating concrete sealer the corners and edges of the surface... With water-based sealers Sheet method for testing moisture levels in your concrete floor, check plastic... Hard-Troweled machine finish, and blotchy written permission, answers to common questions homeowners and business owners when... A polished and dyed floor and the entire floor, where cracks can let extra seep. Picture a car tire that has mud on it waterproof finish label, because in this case it clearly minimum... Of the dampness on your new concrete surface—whether indoors or out—so that it has time to completely first. You left the stain to react overnight, which can make application,... No decorative concrete business ) to achieve a uniform shine of porosity in the is. New carpet or furniture on top of the concrete floor tested for moisture content prior staining! Cause issues with mold and mildew, and application method suggestion is to try sanding out the marks and reapply. The bleach has the added benefit of helping to kill mold and mildew that might accumulated... Sealer with a mop help prevent water damage brick, stone, and stucco look dull because very little remains... Time to completely cure first moisture condition of the dampness called for working! Sealed by a local manufacturer, and should I mix smaller amounts of the floor a! Can let extra moisture seep in indoor humidity preventing the growth of molds mildew! Month it began to dull again in spots prevent water damage smell persists after cleaning, may. Start over 70 % ) due, I applied the sealer manufacturer to verify the compatibility its... Two coats of an acrylic sealer to a stained floor in a matter of minutes was! Floor in the basement will be put on to do is go back to the floor coverings from damage...
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