Paver Sealant: To Seal or Not to Seal

Sealant is an important maintenance tool to keep paver patios, walkways, driveways and pool decks looking as beautiful as they day they were installed.  However, “too much of a good thing” can come into play, and you should be wary of over-applying paver sealant by reapplying too often, which could create a haze. This week’s blog offers tips for knowing when it’s time to seal and how to best achieve the desired look.

Should all concrete pavers be sealed?

Yes. Concrete is porous and will absorb stains if not sealed. Sealants can also protect paver color from fading.

Do all sealant brands offer the same basic protection?

There are definitely some poor products on the market. Don’t trust the fact that you bought it at a big box store or that it’s a high-profile brand. Just because a brand is good at one product category (like paint) doesn’t mean they are the best in another. Belgard recommends Techniseal® sealants. Techniseal® is a pioneer in the industry has a robust R&D department, resulting in effective and durable products specifically created for paver installation and maintenance.

Is any one sealant finish more protective than another?

There are basically two types of paver sealants: film-forming (gloss or semi-gloss finish) and non-film-forming (matte finish). Film-forming sealants, Wet Look and Clear Look, offer the ultimate protection because they create a physical barrier on the paver surface. However non-film-forming sealants, Natural Look and Color Boost, still offer excellent protection and last a bit longer.

Techniseal Concrete Paver Sealer

How long should new pavers cure before they are sealed for the first time?

If using a non-film-forming paver sealant, wait one week before sealing. If using a film-forming sealant, wait 30 days to avoid trapping moisture under the protective barrier.

Is there a prep process before applying sealant?

Even new pavers should be cleaned with Techniseal® Paver Prep prior to sealing. Not only will it clean the pavers, but it will open the pores on the surface to allow better penetration of the sealant. Older pavers will also benefit, as Paver Prep will remove any efflorescence (or whitish salt buildup) that has accumulated. Any stains should be removed prior to applying Paver Prep, using the specific stain remover for the type of stain. For more information, read last week’s blog on paver stain removal.

How long should pavers dry after being cleaned and prepped?

The answer depends on your climate. In warm, sunny climates, the pavers will be dry and ready to seal in a few hours. In cooler climates or shady areas, it’s best to wait about 24 hours.

What are the ideal weather conditions for sealing?

Ideal conditions would be 75 degrees and sunny; however, anywhere between 50-90 degrees is generally fine. Take note that solvent-based sealants evaporate faster, so lower temperatures are better for application.

How often should sealant be reapplied?

The basic rule of thumb is every 3-5 years. For film-forming sealants, you will be able to notice when the physical barrier is showing signs of wear. For non-film-forming sealants, you will begin to see a significant color change of pavers during a rain when the sealant is wearing thin. Keep in mind that in cases of a really heavy rain, even well-sealed pavers may darken for a couple of days until the water fully evaporates, which is not an indication of sealant failure.

PAVER SEALANT APPLICATION TIPS:

  • Like with painting, it’s best to keep a wet edge on a continuous area. In other words, don’t let a section dry before you finish. Once you start working, keep working.
  • An application sprayer (available at any hardware store) makes it easier to work faster.
  • Apply paver sealant to saturation. Get the pavers good and wet to make sure all crevices are covered. Then use a dry roller to soak up the excess to avoid lines and drip marks.
  • Always follow the manufacturer’s instructions.
  • Visit Techniseal’s website for more DIY paver sealant application tips. When in doubt, hire a professional. To find qualified contractors in your area, visit the Belgard contractor locator.

Spring Paver Maintenance Tips

Pavers: Dublin Cobble
Pavers: Dublin Cobble®

Mother Nature can be cruel. If you have chosen Belgard for your hardscape projects, you’ve already taken measures to increase resistance against weathering and corrosion. Still, seasonal hardscape maintenance is encouraged to preserve the beauty and integrity of your installation. Here are a few Spring paver care tips.

General maintenance

  • Clean your pavers each Spring with a coarse-bristle “stable” broom and a routine maintenance paver cleaner to keep them looking like new.
  • Some weeds, if left unaddressed, can shift pavers apart over time. Be sure to periodically apply a granular weed preventative between joints as a part of your paver maintenance routine.
  • Be careful when cleaning your Belgard pavers with power washers as they can remove the paver finish and expose the aggregate on the paver’s surface.

Cleaning

  • Before applying any paver cleaning solution to your hardscape, test a small inconspicuous area first to be sure you get the desired results.
  • Be sure to read and follow the directions printed on container labels for cleaning solution use, application, precautions and first aid. Always rinse the solution off thoroughly after use.
  • For tough stains, use a specialized cleaner to treat the specific stain. Techniseal offers specialty cleaners for organic stains (moss, mildew, dead leaves, blood, wine); greasy stains (motor oil, barbecue, oily foods); rust (caused by steel, rusty objects or fertilizer); and paint, tar or rubber (including gum). Each of these products are specifically formulated to clean pavers and masonry and should not affect the color or tone of your hardscapes. However, it is always a good idea to test a small area area first.

Protecting

  • The joints between paving stones are the most vulnerable areas of any installation. Keep these joints topped off with jointing sand to prevent the sand-bedding layer below from deteriorating, causing the pavers to shift.
  • Every three years, apply a sealer to keep your pavers looking their best. Depending upon your preference, sealer options can offer a natural matte finish, a color-boosted matte finish, a clear semi-gloss look, or a wet-look gloss finish. Sealers should not be applied more than once in three years. Too many applications will create a film on the surface which may discolor in sunlight. You can easily test whether your pavers are ready to resealed by dripping some water on your pavers. If the water initially beads, your pavers are still protected. If the water immediately soaks in, it’s probably time.
  • For older pavers that have suffered from weathering and neglect, bring back the original shade of pavers or give them new color with NuLook Tinted Sealant, which is a semi-transparent semi-gloss sealer designed to rejuvenate faded pavers. NuLook comes in four different shades to bring new life to pavers or create interesting designs. Watch the amazing transformation in the video below.

Protecting Pavers from Debris

bergerac_beauty1

Belgard pavers are designed to last the life of your home. However, like any decorative exterior surface, they are subject to the effects of use, weather and time if not properly maintained. It’s that time of year when patios, walkways and driveways are constantly filled with falling leaves and pine needles — all of which can stain pavers that are not properly sealed.

Even if your pavers were sealed when originally installed, sealant will wear over time. To keep them looking beautiful, it is important to reseal pavers every three to five years. If pavers no longer repel water, or begin to look dull or stained, it’s probably time to clean and reseal them. There are likely a number of contractors in your area who offer this service. To search for a local contractor click here.

For those interested in cleaning and sealing their own pavers, it’s a three-step process.

Step 1: Stain Removal. Remove any stains from the surface using a specialized cleaning product for the particular stain. For example rust, paint, red wine, and grease will each have different chemical properties. Best results will be achieved when using a specialized cleaner for the particular stain. Techniseal offers a high-quality line of concrete paver stain removal products and can be found at various dealers, including Ace Hardware stores.

Step 2: General Surface Cleaning. Once stains have been removed, prep the entire surface to be sealed by removing all efflorescence and ground-in dirt with a paver cleaner. Spray cleaner onto pavers, scrub with a push broom, then rinse with a hose. Allow at least 24 hours for pavers to fully dry.

Step 3: Sealing. Choose between a matte finish, semi-gloss or wet-look sealant, depending on your preference. Before you begin, make sure that sprinklers are turned off, pavers are completely dry, and rain is not forecast for the next 24 hours. Be sure to read the entire product directions and test a small area first. Also note that it is not advised to seal pavers when sustained temperatures are below 50°F (10°C). If all conditions are favorable, apply the product in small sections at a time. For best results, spray on sealant with a sprayer, then use a roller to evenly coat and remove excess. Most sealants will need a second coat. Drying time will vary.

For more information, watch this video: