• General Information
  • Product Choice
  • Application
  • Weather Conditions
  • Sanding
  • Environmental/Health Concerns

General Information

What are the benefits of sealing pavers?

Pavers, and other hardscape surfaces, can be beautiful, but all will be subject to conditions that may mar that beauty.  Protecting your hardscapes with quality sealers can inhibit fading, make maintenance much easier, stabilize the sand joints, protect the hardscape and grouted joints from stains – all generally making your hardscape a more beautiful and livable space.

What are the differences in water based and solvent based sealers? What are the pros and cons of each?

Water-based sealers tend to be more environmentally friendly than solvent-based sealers.  Water-based sealers have low VOCs (volatile organic compounds that harm the ozone), tend to be more forgiving in application and how they wear, and tend to have a mild odor when being applied, which is less irritating to the applicator and homeowner.

What is efflorescence? How do I remove it from my pavers? How do I remove it from my sealed pavers?

Efflorescence is a naturally occurring condition with all concrete products, which will usually correct itself with time and exposure.  STAIN MAGIC is very effective at removing efflorescence from pavers.  Sealed pavers may require stripping sealer prior to removing efflorescence. More information is available on our website at

How long should I wait after my hardscape is installed to apply sealer?

Check with your specific paver manufacturer on their recommended time before sealing.

Will this product damage my pool or pool filter if there is over spray?

Our sealers are designed for pool water contact.  If excessive amounts are spilled into the pool, turn off pool pump and contact your pool professional.

How do I maintain the new look of my sealer?

Regular maintenance and cleaning with a non-acid based cleaner works well.  Do not pressure wash the surface for at least 45 days to allow the sealer to cure, although using a spray hose attachment is acceptable.  Do not use bleach or other harsh chemicals on the surface or you may damage the sealer.

How long does the sealer last?

The color-enhancing sealers will typically last 2-3 years, with the shine and color-enhancement not lasting as long as the protective quality of the sealer.  The natural-appearance sealers will typically last 5 or more years.  A variety of factors influence the longevity of the sealer; sealer application, residential vs. commercial, sun exposure, environmental conditions, volume of traffic, frequency of cleaning and chemicals used.  We add the most advanced UV additive on the market to ensure longevity in the harshest environments.

What is the coverage for the sealers?

The coverage rates vary for each sealer product.  Some sealers may only need to be applied as one-coat, and some sealers may need two or more coats, depending on the type of hardscape, the surface porosity and application method.  See the technical data sheets for each product, as well as information on different types of hardscapes referenced in this FAQ.

What type of equipment is needed to seal hardscapes?

We recommend the following equipment:

- We recommend applying sealers with a sprayer to ensure thorough coverage with a light hand, as it can be easy to apply too much product when rolling the entire job. There are a variety of sprayers on the market that work effectively.  The key is to have a consistent spray pattern that produces a 0.5 gallon per minute outflow of sealer (some contractors may prefer a 1.0 gallon per minute outflow).  Our color-enhancing sealers should have a lighter spray result than some other competitive sealers.

- Have a 3/8” or ¾” lint-free roller available, depending on the surface type to use for any back-rolling needs (e.g., puddling, smoothing sealer on a smoother surface) or for pool coping.

- For pool coping or tight areas, use a paint roller or sponge brush work, taking care to cover the entire surface with an even coat; note that most pool coping only requires one coat of sealer.

Does sealer make the surface slippery?

Our sealers do not make the surface slippery per se.  Some surfaces are prone to be more slippery before sealer is applied.  Therefore, we recommend adding a texture additive (DIAMOND GRIT) if there are areas of concern (e.g., pool decks, stairs) or hardscapes that have a smoother surface that might be more slippery in a stand-alone state.

Are the sealers susceptible to receiving tire marks?

Not typically.  Tire marks typically only occur from softer tires when turning or fast starts.  Also, freshly resurfaced blacktop roads may leave a residue on the pavers from the tires on freshly sealed surfaces.  This will typically wash off with soap and water.  In certain cases, it may be necessary to pressure wash the surface to remove the residue.  Once the sealer has completely cured (normally in 30 days), this will not occur.  If tire marks do not wash off, a small quantity of denatured alcohol may be used to remove the marks; however, first perform a test spot to check for the desired result.

Can the sealers be used indoors? Are there special precautions when doing so?

Yes, our sealers may be used indoors.  You may have increased dry times depending on the indoor climate.  Refer to our data sheets for specific precautions.

Does a sealer prevent mold and weeds?

The sealers will slow down the mold process and make it easier to clean from surface.  The color-enhancing sealers stabilize the joints and make it harder for seeds to take hold.  No sealer can fully prevent weeds from any surface.

Will these sealers prevent stains from oil, beverages and hard water?

Our sealers make maintenance easier.  However, you should always remove liquids and even leaves, as soon as possible to ensure that they don’t stain the sealer, which will eventually penetrate to the hardscape surface.

Where can I buy Black Diamond Coatings sealers?

You can buy online through our website or Amazon.  If you’re looking for a local distributor, please contact our Customer Care team at 800.270.4050, and we’ll be happy to assist you. 

Product Choice

What is this concept of Paver Whisperer?

Becoming a Paver Whisperer is a term we coined regarding letting the hardscape surface tell the applicator what type of sealer and how much of it should be applied.  Not all concrete pavers are designed the same and they have had different histories.  Some pavers may only need one coat of paver sealer, and others may need three coats.  Pavers that have been previously sealed typically don’t require two coats of sealer as quality sealers leave their chemical base in the pores of the paver, even if a film-forming topcoat has worn away.  Clay pavers should not be sealed with paver sealers designed for concrete; instead, they should be treated like natural stone for sealing purposes.

How should I choose between color-enhancing and natural appearance sealers?

This tends to be a personal preference.  Some customers love the look of their hardscape when wet, which is where the term “wet look” was formed.  “Wet look” may or may not mean a glossy finish, depending on the manufacturer.  Black Diamond Coatings offers different degrees of sheen – from semi-gloss to no gloss, depending on the customer’s preference. 

Note that many of the lighter hardscapes (e.g., white, ivory, light gray) may not benefit from a color-enhancing sealer, when the owner may prefer the natural appearance.  In this case, consider the AQUA-X natural-appearance sealers.  As with all products, we recommend applying a test area prior to application to ensure the desired results will be achieved.


Always test the chosen sealer on a small, inconspicuous area (at least 4 square feet) prior to sealing the entire project to ensure your satisfaction with the results.

Are there any concrete pavers that differ in sealer choice?

Yes. Certain concrete pavers are very dense (e.g., concrete pavers with shells, wet cast pavers, some commercial grade pavers), therefore, they cannot absorb as much paver sealer as typical pavers.  Depending on the paver product, we recommend using our STONE+ or AQUA-X 11 or one coat of a paver sealer.  Please contact our Customer Care Team prior to purchase and application with any questions on your specific scenario.

Can you fix faux stone or clay pavers?

Yes.  Our products are ideal for most masonry surfaces.  STONE+ or AQUA-X 11 are ideal for natural or faux stone and clay products, as these surfaces tend to be denser, acting like many natural stone surfaces.   We don't recommend using STONE+ inside as it takes a long time to dry in an indoor setting.


What are typical dry times?

For the color-enhancing sealers, we recommend allowing 24 hours for heavy foot traffic and 48 hours for vehicular traffic. The sealer will be dry to the touch typically within 4-8 hours.  Drying time can vary based on environmental conditions (e.g., rain, sun, humidity).  If the product remains tacky for an extended period of time, it is an indication of the product being over-applied.  In this case, longer drying times are necessary for product to completely dry. 

For the natural-appearance sealers, we recommend allowing at least an hour and be visibly dry before reopening to traffic. 

If the sealer is taking too long to dry, what should I do?

This is a result of over application of the product. The sealer will take longer to dry, but it will dry. If time is an issue, pressure wash the surface to remove excess product. We recommend reading the Application Guide or watching the application video prior to the initial application in order to make sure the product is applied properly. If you have any questions prior to application, please contact our Customer Care team for assistance.

Can the sealer be applied over damp surfaces?

The color-enhancing sealers can be applied to damp surfaces if there is no standing water.  However, it is recommended to have the surface as dry as possible to ensure the product will absorb thoroughly. 

The natural-appearance sealers should be applied to dry surfaces to get full penetration of the sealer into the surface.

Will the sealer turn white?

No, when applied properly, our sealers will not turn white.  Generally, two conditions may cause a white haze to appear on the surface:

- If the sealer is applied too heavily, it will cause increased dry times; exposure to moisture during this period will cause the sealer to haze. Once the sealer dries, the haze will disappear;

- OR, If the product is applied (at recommended coverage rates) and it comes in contact with moisture (e.g., rain, high humidity, morning dew before it is completely dry), cloudiness may occur. Once the product has had sufficient time to dry, this will not occur. If the surface is allowed to dry after the exposure to moisture, the sealer will continue to dry clear resolving the cloudy condition.

How do I prevent streaking on the sealer application?

Streaking generally occurs when the product is applied in an uneven manner. To avoid this, apply sealers with a sprayer.  Then, back roll the product (keeping a wet edge) after spraying will help prevent streaking.  On products and surfaces needing more than one coat, apply the second coat of product in the opposite direction of the first.  This will generally correct the issue.

How do I remove sealers from surfaces other than hardscapes?

We always recommend protecting surfaces not intended to be sealed as part of the preparation steps.  However, accidents happen and removal is easy with a cloth or sponge while the sealer is wet.  Typically, denatured alcohol, mineral spirits, or xylene will remove dried sealer.  Depending on the surface that is at issue, you may need to contact the manufacturer to ensure that any of our recommended removal products won’t have an adverse effect (e.g., paint manufacturer).  As always, we recommend testing the removal method on an inconspicuous area first.

Do I have to strip the sealer each time before resealing?

No, if you are resealing using the same Black Diamond Coatings product.  However, if sealing over an older sealer or solvent based sealer, stripping may be necessary if sealer remains on the surface.  Remember that the chemical closest to the hardscape will fail first, so old sealer remaining on the surface prior to sealing with any of our sealers will potentially “push” the new sealer off.  If you decide to strip your hardscape surface, strippers designed to remove paint will work.  Follow the manufacturer’s application instructions, and ensure that all stripper is completely removed from the surface prior to sealing.

What is the process of adding a nonskid additive to this product? How should sealer with the additive be applied?

Refer to our DIAMOND GRIT application instructions on the product page here. Clean your sprayer after application as you normally would.

Do you recommend a cleaning product for cleaning pavers before sealing?

It depends on the cleaning need of the hardscape.  You can use a general cleaner or degreaser if you have oil stains. Always test any cleaners in an inconspicuous area before using on the entire project.  Long-term stains may not be able to be fully removed.

Can you seal over painted surfaces? Can you paint after using your sealer?

Yes you can. We recommend a very light coat because the paint absorbs sealer different than the concrete. You don't want the sealer to puddle on the surface from over application. 

Weather Conditions

What if it rains after applying the sealer?

If a light rain occurs more than an hour after sealing, then there should not be any issues. The color-enhancing sealers may turn white, but they will dry clear once the moisture escapes.  If a heavy rain occurs within a few hours of sealing, then some of the color-enhancing sealer may be washed off the surface since these sealers form a film on the surface.  In either scenario, the penetrating, AQUA-X sealers should not be affected.


Can I apply sealer immediately after applying sand?

Yes, if the sand is not a polymeric sand.  If you’ve installed polymeric sand, refer to the manufacturer’s direction on the cure time of the sand prior to sealing.  With our DOMINATOR Polymeric Sand, we recommend a short waiting period after installing the sand before sealing.  You want to ensure that no sand has been inadvertently left on top of the paver surface.  If you seal immediately after installation, then you’ll seal the sand into the paver. 

What is a polyhaze? How do I remove it from my pavers?

Polyhaze is dust left over on top of the paver from polymeric sand.  Refer to the specific polymeric manufacturer on their removal methods.

Does the sealer lock in the sand?

Yes, our color-enhancing sealers are joint stabilizing.  The advantage these sealers offer is hardening the joint sand with a crust on the surface, which will not come out of the paver joint under typical rain conditions.  When pressure washed, the sand can be removed and refreshed when re-sealing the pavers in a few years.

Should I re-sand each time I reseal my pavers?

This is optional if the interlocking nature of the pavers is still intact.  If pavers are loose, re-sanding may be necessary.  If pavers are tight, you may not need to re-sand, and it becomes personal preference.

Environmental/Health Concerns

Is this product harmful to your skin? What to do if product gets into your eyes? What to do if product is ingested? Is this type of data listed on the label?

Refer to our SDS sheets for all safety information.  

Are the sealers harmful to plants or animals?

No.  Of course, pets should always be kept away from areas being sealed until those areas are dry.