Can I add a second layer of polymeric sand?

It is not ideal to add a thin layer of polymeric sand on top of what's already there for many reasons: the original sand can be old, of unknown condition, and/or dirty. The best approach would be to remove at least 1" of the jointing material and follow the steps for a new polymeric sand installation.

Can you put polymeric sand over existing polymeric sand?

If you are installing polymeric sand in an existing job, it's important to uniformly remove at least an inch of the joint depth before reinstalling polymeric sand.

Can you put new polymeric sand over old?

Yes. If you are tired of sand erosion, weeds and ants on your pavers, Techniseal Polymeric Jointing Sand can be used to replace old sand in your joints. Simply remove the old sand completely and apply Techniseal Jointing Sand. This can easily be done by a professional applicator.

Do I have to remove old polymeric sand?

But unlike normal sand, the compound hardens very quickly when you expose it to moisture or water. Thus, you must remove polymeric sand from pavers' surface before you finish your project. Still, the polymeric sand usage in paving projects is probably one of the best choices when it comes to sand types for joints.

How big a gap can polymeric sand fill?

How Big a Gap Can Polymeric Sand Fill? Polymeric sand works best to fill gaps between 1/4 inch and 1.5 inches wide. Wider joints will require more time to harden.

How To Use Polymeric Sand for Pavers

Why does polymeric sand fail?

Polymeric sand cures by drying. And in order to fully set, it needs to dry out completely. If your polymeric sand didn't harden up, it's pretty much guaranteed there's a moisture issue. If the joints remain wet after the installation, they will remain soft until they dry.

How often should you apply polymeric sand to pavers?

If you chose polymeric sand, even if exposed to the same circumstances as regular sand, it may last up to ten years (or more). Note that to increase durability, you can apply a sealer over pavers in both cases (polymeric and regular sand).

Why is my polymeric sand not hardening?

Polymeric Sand Not Hardening

If it is able to penetrate the sand, then there is a problem. Typically this occurs because there was a rainfall shortly after the installation which caused the sand not to set, the sand was watered for too long, or there is not proper drainage in the base.

How do you remove the haze from polymeric sand?

Poly Sand Haze Tips

If poly sand haze has transpired on the surface, it must be cleaned with an acid-based cleaner. Sometimes vinegar can be used unless the poly sand haze is severe. Many times, homeowners and even contractors are unaware of poly sand haze.

How long does polymeric sand last?

Polymeric sand can last up to 10 years before replacement is necessary. However, certain manufacturers claim some products can last up to 15 years.

Can you over water polymeric sand?

When watering in the Poly Sand, remember Goldilocks - "This is just right." Don't use too much or too little water. The amount of water you use is a critical element to an installation. Using too much water can cause the joint to over-saturate and result in polymer washout, mushy sand, and a weak bond.

Can you put too much sand under pavers?

The amount of sand you use can make or break your paver installation, so it's best that you use no more than the recommended 1 inch. Here's why: A sand layer that is too thick can create waves in your patio during the installation. Pressing pavers into a thick sand bed may result in misalignment and a messy look.

When should you not use polymeric sand?

#6 - Too Narrow or Too Wide Joints

The sand is simply pushed out of the joints. This is why we don't recommend using polymeric sand on extremely narrow joints. Similarly, too-wide joints can lead to washout, because they allow too much water flow during the activation process.

Will rain mess up polymeric sand?

In general, it is recommended to wait at least 24 hours after any significant rainfall to proceed with the installation of polymeric sand. Understandably, it is not recommended to lay jointing sand in the rain, or when precipitation are expected in the hours following your work.

How deep should polymeric sand be?

Polymeric Sand needs a minimum depth of 4 cm (1 ½”) to be effective. Use a power washer to empty the joints. If there is already polymeric sand between the pavers, soak the sand to soften it up before emptying the joints.

How long does it take for polymeric sand to harden?

A minimum of 24 hours drying time is required prior to allowing significant foot traffic and 48 hours for vehicular traffic on the paver surface. Polymeric sands are designed to soften and re-heal.

Will polymeric sand stop pavers from moving?

If you're looking for a way to improve the stability of your paver patio or walkway, polymer sand is a great option. Polymeric sand helps to hold the pavers in place and prevents them from shifting or moving.

How do you clean pavers without removing polymeric sand?

Wet The Patio With Water

After it's wet, then add some dish soap or a degreaser to a bucket of water. Using a brush that's stiff, pour some water and soap on the pavers and give it all a scrub. Keep it gentle, and don't go overboard on the scrubbing, so you don't damage any of the surfaces.

Do you have to compact polymeric sand?

A tightly compacted joint has the best opportunity for long term success. of polymeric sand you will end up with a mess. Installing polymeric sand on a damp or wet surface could cause the sand and polymers to stick to the surface and become difficult to remove.

Do I need to seal polymeric sand?

Without any kind of sealer, the sand in your joints will blow and wash away. Fortunately, if you use one of Seal \'n Lock's paver sealers, you won't have to worry one bit about purchasing or installing polymer sand.