Can you put new polymeric sand over old polymeric sand?

CAN I USE POLYMERIC JOINTING SAND? 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.

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.

Do you need 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.

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 redo polymeric sand?

Unfortunately with polymeric sand replacement, you can't just uproot any weeds and top it up. You have to completely remove all the pre-existing sand in the joints and start fresh. For this step, Hubs had to get down and dirty with a scraper to remove the old sand between the pavers. Hubs did all the work by hand.

How to repair the Polymeric Sand

How do you remove hardened polymeric sand?

Removing polymeric sand from pavers is not a fun process. You can try to use a hot pressure washer to remove the sand, but you may be left with some sand remaining in the joint. Regardless, you are going to have to scrape out the sand of the joints and use a shop vac or blower to remove this scraped out sand.

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.

Why is my polymeric sand not hardening?

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 do you replace sand between pavers?

To replace sand that has been washed out, simply pour joint sand over the pavers. Next, sweep it into and across the joints using a stiff push broom. Keep the depth of the sand at ¼ inch from the surface of the paver. Afterwards, you can sweep the excess joint sand between pavers and store it again for future use.

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.

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.

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.

How much does a 50 lb bag of polymeric sand cover?

When filling small gaps, a 50lb bag of polymeric sand will usually cover 75-100 ft². When filling wide gaps of 1/4″ to 3/8″ a 50lb bag will usually cover 30-60 ft². Wider gaps, for example with a flagstone patio, will require even more sand to fill.

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.

Can you pressure wash polymeric sand?

You can't pressure wash and apply polymeric sand on the same day. I should warn you that getting the stain off is a huge problem so it's best to take the time to avoid it in the first place.

Does polymeric sand need to be sealed?

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.

What happens if it rains on polymeric sand?

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. After installation, a hard rain on polymeric sand that has not fully set up could result in polymeric sand all over the top of the pavers.

Can I hand tamp polymeric sand?

Once you have swept the sand into the paver joints, a hand tamp should be used over the entire paver area in order to “vibrate” the sand further into the joints.

Why do my new pavers look dull?

Pavers that aren't sealed are more likely to grow weeds and moss in the joints. The colors of any brick or paver will begin to fade, and the accumulation of dirt and ground-in grime on the surface will dull their appearance.

Why are my pavers turning white?

The phenomenon of efflorescence occurs when water soluble salts migrate to the surface of the paver with the help of water (i.e., condensation, rain). Once the mixture of water reaches the surface, it mixes with the carbon dioxide in the air and creates a white haze/film that covers the pavers.

Can ants get through polymeric sand?

Polymeric sand hardens in place when exposed to moisture so the sand particles bond together and are more resistant to ants mining through it. Reduces Weeds In Joints- All paver systems eventually get weed or grass seeds in the joint sand. The joints are a very easy place for weeds to root.

How do I stop weeds from growing between pavers?

Weeds want to inhabit a cool damp environment; proper drainage will help avoid weed growth. Regular Sweeping. Brushing your paving stones will prevent seedlings from settling, and will disrupt new weeds from fully establishing a place between your pavers.