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Stain Resistant Concrete Sealer – CoverShield U100 Matte Finish
- Location : Interior/Exterior
- Task : Floors
- Application : Pump Sprayer, MIcrofiber Mop, T-Bar, Roller
- Base : Water Based Urethane
- Coverage : 800 sq.ft/ gallon (19 .6 sq.m/l)
- Finish : Matte
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- Location : Interior/Exterior
- Task : Floors
- Application : Pump Sprayer, MIcrofiber Mop, T-Bar, Roller
- Base : Water Based Urethane
- Coverage : 800 sq.ft/ gallon (19 .6 sq.m/l)
- Finish : Matte
Delivery Time: Typically 3 to 5 business days
Frequently Bought Together

Stain Resistant Concrete Sealer – CoverShield U100 Matte Finish
$15.00 – $471.50Price range: $15.00 through $471.50
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Description
CoverShield U100 Acid & Stain-Resistant, Odorless, Clear Matte Finish Concrete Sealer
High Performance Stain Resistant Sealer for Concrete and Terrazzo Floors
CoverShield U100 Matte Product video
CoverShield U100 Matte Un-boxing video
Features
- Stain and chemical resistant
- Excellent resistance to abrasion
- Easy to clean and maintain
- Holds up to fork lift traffic
- Odorless
- Non yellowing UV stable
- Easy to apply with high coverage
- Safe for food contact
- Waterproof
- Scratch resistant
Typical Uses
- Concrete susceptible to staining, discoloration
- Stained and decorative concrete inside or outside
- Cement terrazzo
- Polished concrete
- Countertops
- Marble and limestone
- Restaurants
- Malls and supermarkets
- Hospital floors
- Warehouse floors
Shelf Life
Theoretical Coverage
Protect Your Porous Surfaces with a Stain Resistant Concrete Sealer
Protect Your Porous Surfaces with a Stain Resistant Concrete Sealer
Quick Response to a Key Question
What are Stain Resistant Concrete Sealers?
- Improved aesthetics,
- Protection from discoloration,
- Increased resistance to abrasion,
- Improved durability in harsh weather conditions.
Main Points to Remember About Floor Sealer Products
Benefits of Using a Stain Resistant Concrete Sealer
- According to an independent study conducted in 2020, film forming concrete sealers like water based urethanes have proven to provide the highest level of protection against water and oil-based stains on existing and new concrete.
- The study further examined penetrating sealers and found that silane/siloxane solutions provide excellent protection against water ingress but flouropolymer based penetrating sealer provided the best protection against staining.
- A further study concluded that the application of a quality topical applied stain resistant concrete sealer can reduce staining from acid, alkaline and salt sources by up to 85%.
Protection from Weather Elements
Protection from Spills and Stains
Key point: Using Oil Repellent Sealer Products
Types of Stain Resistant Concrete Sealers
Film-forming or Topical Sealers
Penetrating Concrete Sealers
Sealing Concrete Surfaces
Cleaning and Re-surfacing Concrete
Preparing the Surface
Conclusion
Conclusion
Lastly, since most stain-resistant sealers are composed of chemicals, there is a risk of the sealer itself staining the concrete due to leaching from below. Therefore, it is important to weigh these potential drawbacks when weighing options for protecting your concrete.
It is important to note that there are two general types of sealers: film-forming sealers and penetrating sealers. Film-forming sealers tend to create a durable barrier on top of the concrete and provide a glossy finish. These are typically used for interior surfaces and products such as garage floors and patios. Penetrating sealers penetrate into the substrate to block water and chemicals from entering the surface. These are often used on exterior surfaces such as driveways and sidewalks where they are more exposed to harsh weather conditions. Be sure to read labels carefully to make sure you purchase the right type of sealer for your project.
Additionally, a protective sealer can make it easier to clean dirt, dust and grime from the surface of the concrete, which can help extend its life and keep it looking great for longer. Finally, a sealer will help protect against UV damage from the sun’s rays, preventing fading and discoloration over time.
| Product Name | Surface Type | Coverage | Size of Area (sq ft) | Recommended Quantity |
|---|---|---|---|---|
Stain Resistant Concrete Sealer – CoverShield U100 Matte Finish
|
Smooth Surface | 800 sq. ft. per gallon | ||
Stain Resistant Concrete Sealer – CoverShield U100 Matte Finish
|
Textured Surface | 400 sq. ft. per gallon |
- The recommended amounts are approximate only, and are for One (1) application.
- Check product data for recommended number of applications.
- Test product on actual surfaces to determine exact coverage rates.
CoverShield U100 is a tough, industrial grade, water based clear gloss or matte finish polyurethane sealer. We use a low viscosity highly crosslinked advanced blend of polyols resins in a water-based formulation. When these resins react together the thin film formed, that is highly resistant to oil and automotive fluids, acids, alkaline solutions, solvents, food stains and cleaning agents. U100 is designed to penetrate the subsurface of the concrete and form a thin film on the top surface which provides an absolute barrier to oil. This thin film is non yellowing, does not lift and peel (like thicker coatings) and is easy to keep clean repair and recoat.
CoverShield U100 creates a thin, highly durable layer on the surface of the concrete that is very oil resistant. The product that resists peeling and scratching, holds up heavy foot and forklift traffic. Furthermore, U100 matte or gloss finish is UV resistant and can be used interior and exterior.
U100 does not require extensive surface preparation in order to bond to a smooth surface. This makes the product very effective on smooth steel troweled, densified or polished concrete. The high coverage per gallon.( 800 sq. ft /gal or greater) compared to 150 -200 sq. ft per gal for an epoxy coating . This makes the U100 a high-performance high value solution. A lot of bang for the buck!
Epoxy coatings have excellent oil and chemical resistance but are not UV resistant and are for interior use only. Application thickness is higher and surface preparation needs are greater for an epoxy . This drives up the overall cost of and epoxy coating compared to the CoverShield U100.
For best results we recommend staining the concrete first using our color stain UV products. The ColorStain UV can also be added directly to U100 to impart color in a single step.
Yes, U100 is very chemical resistant to a variety of substances you would see in a garage setting, for example brake fluid, oil, acid, bleach, salts, etc. We use a low viscosity highly crosslinked advanced blend of polyols resins in a water-based formulation. When these resins react together the thin film formed is highly resistant to oil and automotive fluids, acids, alkaline solutions, solvents, food stains and cleaning agents.
A major benefit of the CoverShield U100 is that it is a thin film system. It penetrates the sub surface and leaves a thin film on top of the concrete. This film is very oil resistant and makes concrete easy to clean and maintain. Also, it does not flake and peel like epoxy.
Yes, All coatings will scratch, no coating is total scratch proof!
Having said that U100 is a very durable sealer and has a high scratch resistant. If the surface does get scratched it is easy to repair. Sand the damaged area with 400 grit sandpaper. The aim is to feather out the scratch and prepare the repair area for to coating. Then wipe up the dust using neutral cleaner or rubbing alcohol. The repair area needs to clean dull and dry. When dry apply 2 or 3 thin coats of U100 . Allow 24 -48 hours before opening to vehicular traffic depending on temperature and humidity.
Light foot traffic is possible after 6-8 hours and heavy foot traffic is possible after 12 hours at 77deg F (25 deg C) and 50% humidity. Dry time is very dependent product thickness, temperature and humidity. The higher the temperature and humidity the faster it will dry. If the slab is cold and the air is dry the dry time will be significantly extended. It is very important to allow each coat ( including primer cost if used) to dry fully before applying the next coat (topcoat). That way the whole system will dry faster. When the last coat is tack free Allow a further 24- 48 hours before vehicular traffic depending on application thickness, the temperature and the relative humidity in the room.
Yes, the pot life is very important. The pot life is basically the amount of working time you have to apply the product once the product is mixed. CoverShield U100 has a 2 hours pot life at 77deg F (25 deg C). Any remaining after that point must be thrown away. Using product once in its past its pot life will result in product failure.
Yes, CoverShield U100 is a UV resistant non yellowing polyurethane coating and can be used exterior and interior applications.
Approximately 800ft2/gallon (19.6 m2/liter) per coat depending on the density and porosity of the substrate. Coverage can be higher on the 2nd coat. The important thing is not to over-apply. This product should be applied thinly and evenly.
No, if you are going to use epoxy, then you would use our product called StrongSeal Plus.
Yes, if the U100 is sanded to create a profile, you could then coat with an epoxy product.
U100 comes in two sheens, Semi-Gloss, and Matte. The matte is a flat no shine finish. The semi-gloss has a medium gloss appearance. The gloss level can be increased by applying a prime coat first and/or densifying the concrete using our SurfaceFinish CD80 product. U100 can also be burnished with a high-speed burnishing pad to increase the gloss. To increase gloss by burnishing, wait at least 24 hours after the final coat is applied. Then use a high-speed burnisher (1500–2500 RPM) fitted with 800, 1500 and 3000 diamond grit burnishing pads, or Hog Hair pads. Start with 800 grit and burnish at a fast walking pace.
Our product is an aliphatic polyurethane. It forms a thin film across the surface of the concrete that is and absolute barrier to oil and harmful chemical staining.
Penetrating sealers do not form a film at the surface. The work by blocking the pores in the concrete and restricting the oil and other contaminates getting into the sub surface of the concrete. The very top surface is still exposed however so staining is still possible and there are limitations to the amount of oil exposure the penetrating can withstand.
The use of a concrete densifier depends on the quality and strength of the concrete. Densifying the concrete can harden the concrete and increase overall sealer adhesion and durability. Densifying can also help with increase shine. We recommend the use of our Surface Finish CD80. This product is a colloidal silica with very small particle size (3 to 8 nanometers). These nanoparticles mean that the densifier penetrates deeper and reacts faster (30 to 60 minutes) than standard concrete hardeners. SurfaceFinish CD80 is supplied in a concentrate (1 gal makes 4 gals ready to use) so it is very economical.
This depends on the amount of use, type of use, chemical exposure, and of course how well the finished surface is cleaned and maintained. Typically, you should expect to 3 to 5 years before having to do a recoat. Based on foot and vehicular traffic, floor should be swept clean with broom or a microfiber dusting pad.
In a workshop environment or where there is heavy vehicular traffic, floor surface should be mopped daily or cleaned with a floor machine using a neutral cleaning solution.
Yes, U100 is simple to apply. On a smooth trowel finished concrete you simply spray the first coat using a pump-up sprayer, and then use a flat microfiber mop and spread a nice even thin coat. Allow the first coat to dry before applying the 2nd coat. The 2nd coat should be applied in the same manner as the 1st.
If the surface is polished (maximum 800 grit ) or very dense we recommend you apply a prime coat first. Apply the prime coat by pump up spray only. No mopping.
If the surface is very textured uneven or broom finished, then a U100 should be applied by 3/8th nap microfiber roller. Please refer to the technical datasheet for more in depth application instructions.
If the surface is clean you can recoat with CoverShield U100 within the first 48 hours of previous application. After 48 hours, sand or scrub entire surface using After 48 hours, mechanically abrade the entire surface using an auto scrubber fitted with a 220-sand screen or a Maroon Surface Preparation Pad (SPP pad). Clean with GlossClean neutral cleaner and allow substrate to dry. Apply CoverShield U100 within one hour.
CoverShield U100 has good anti slip properties when dry but it can get slippery when wet on a smooth surface. Increase slip resistance can be achieved by mixing in our CoverGrip anti slip additive at the time of application.
The concrete surface being coated must be a minimum 7 days cured, structurally sound (200psi or greater according to ASTM D4541), clean and dry. It must have low moisture-vapor transmission (6 lbs./1,000 ft ²/24 h (or 15 g/m²/24 h) or lower).
It is very important to make sure that the concrete is absorbent. Any existing sealer or curing agent etc. that might interfere with the absorption of the U100 sealer should be removed. A quick test for existing sealers is to conduct a water test to see if the concrete will darken when wet. Simply pour 1 fl.oz of water on the concrete and see if it will darken the surface after standing for 5 minutes. If after 5 minutes the surface does not darken prepare the surface by sanding the floor with a 60-200 grit sanding screen or diamond abrasive pad. Remove all residue before sealing.
CoverShield U100 is recommend for use on concrete and terrazzo surfaces only. These include steel trowel, polished concrete( up to 800 grit) . U100 is not recommended for non-porous surface like epoxy, polyurethane or ceramic and porcelain.
No, if you have an acrylic product on your floor, you must strip this product first, then apply the U100. Alternatively, you can use StrongSeal Plus.
Based on foot and vehicular traffic, the floor should be swept clean with broom or a microfiber dusting pad. In a workshop environment or where there is heavy vehicular traffic, the floor surface should be mopped daily or cleaned with a floor machine using a neutral cleaning solution.
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