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Why Should I sand my Paver joints?

By Kyle February 6, 2017

Should you re-sand your Brick Paver Joints? YES

The Importance of Brick Paver Sand & Properly Maintaining your Hardscapes

Brick pavers absolutely, 100% should be re-sanded before sealing. The sand in the brick paver joints serves MANY integral purposes. It helps keep joints stable, paver’s level, insects out, plant life from growing between the joints, and helps prevent mold. Please read and educate yourself in this small write-up before letting another brick paver sealing contractor talk you out of re-sanding or over-sanding your brick pavers… During *initial installation, Proper Joints between pavers should be between [1/16 in. and 3/16 in. (2 and 5 mm)] wide

Joint stabilization – If you don’t have sand in the joints, rainwater or pool water will run between the brick paver joints and wash out the base aggregate sand material your brick pavers float on (usually a 1″ – 2″ sand base), making your brick pavers lose, shaky, uneven, sunken in or even raised in some areas. Commonly called “sub-surface erosion” or “Degradation, “also widely found with improper installation, dripping water, and/or drainage areas.

Don’t walk or Drive on the sealed surface till it has cured; doing so can loosen up the sand and cause the pavers to shift.

Once the joint sand has been activated with the brick paver sealant, the sand will become extremely hard, comparable to the consistency of concrete. Once it’s hard like this, as you can imagine, water can no longer wash out that aggregate material the brick pavers float on, but that solid joint sand acts as an impenetrable barrier that weeds won’t be able to break through. Water won’t be able to stand between and below those paver joints, warmed by the Florida sun, creating the perfect environment for mold growth. In other words, reducing that unsightly mold or weeds in your brick pavers!! As it acts as that barrier for mold and weeds, insects like ants will no longer be able to easily make their homes under your driveways or pool decks, leaving small ant piles throughout your brick paver installation.

Many companies will advise against sanding your brick paver joints after cleaning and sealing. Why? Because getting the joint sand to the ICPI (Interlocking Concrete Pavement Institute) standard is a skill obtained only from a lot of experience doing that task. The ICPI calls for joint sand between 1/8th and 1/4th inches below the brick paver’s chamfered edge (the beveled edge around the individual brick). As opposed to a high level like you, this recessed sand level would find grout between tiles in your home for three reasons.

Reason # 1 The small 1/8th inch canal below the surface of the pavers allows for a channel that rain/pool water can find its way to the deco drain that you would find on a pool deck, for a path to safely trickle between the brick pavers in your front walkway down your brick paver driveway to the street gutters, or run off the side of the driveway.

Reason # 2 Why you don’t want the joint sand flush with the tops of the pavers is so when the sealer does start to wear off, that sand that the contractor who didn’t follow the ICPI joint sand standards will stick to the bottom of your feet, or wash into the pool, clogging up your pool filter with sand, find its way on your car tires when you pull your car into the garage, or shoe bottoms when walking into the entryway of your home.

Proper joint sand height is essential when using a joint stabilizing sealer with joint sand. When it’s too high, there could be an issue when applying a joint stabilizing sealer. If there is no reservoir for the water or sealer to accumulate in the joint, it may not get adequately saturated, which helps create a solid full-depth joint, causing premature sand loss.

Reason # 3 The sand/sealer will also wear unevenly and at a faster rate as you walk on, move furniture, drive on, rub off the sealer, and the sand will find its way all over the surface area, making your sweeping job never-ending! Again, resulting in the loss of joint sand, which can cause wobbly uneven pavers, and water not to channel or drain properly, adding a potentially unsafe environment.

The Initial Installation being completed correctly plays a Huge Role in maintaining your hardscape for the life of your pavers.

When you want the job done correctly, contact the pros at:

352-282-2886.

We don’t skate around the project by leaving out the most critical steps to protect and preserve your brick paver investment. Unfortunately, many companies will try to encourage you against re-sanding the joints or charge extra if you want them to re-sand the paver joints. Those are the companies that you want to stay away from. Usually, the ones that encourage against it are the ones that have failed many times in attempting to sand the joints correctly.
www.PaverRestorationFL.com

What is Silica Sand?

Silica sand is a high-tech mix of properly graded, cleaned & washed sand and a binder compound (yes, it’s silica) specially formulated for filling the joints of pavers and slabs. Silica sand has revolutionized the installation of interlocking concrete pavers. It is sand that hardens once activated and has dried yet remains flexible when wet.

Benefits of Silica Sand

  • Silica sand stays in the paver joints and resists erosion.
  • It retards weeds from growing in the joints.
  • It retards ants from coming up through it as well.
  • The most significant benefit is that it is flexible when wet and can move with the pavers.
  • It works in all paver applications and can be used in those natural stone applications with a joint width of up to 1/2″ wide.
  • Silica sand meets the ICPI industry standards.
  • We only use Cleaned, washed, dry sand.
  • We have Optional Colors @ an additional Cost.

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