Yes, you can put new polymeric sand over old. However, it is best practice to remove the old first. Make sure to remove all of the old sand with a broom, or use a leaf blower. Generally, you want to remove all of the particles that are bigger than the grain size of the new sand used.
This will ensure the integrity of the new installation and reduce the chance for future issues, such as weeds sprouting between the stones. Once the area is cleared, you are ready to spread the new sand and complete installation.
How do you remove old polymeric sand?
Removing old polymeric sand from a patio or walkway can be a labor-intensive process. It is important to use the proper tools and protective equipment to make sure the job is done safely and correctly.
Here is a step-by-step guide to removing old polymeric sand:
1. Begin by brushing the surface of the patio or walkway with a stiff-bristled broom. This will help to loosen the polymeric sand and make it easier for removal.
2. Use a pressure washer to completely remove the old polymeric sand. This will take a few passes in order to remove all of the particles from the joint.
3. Once the polymeric sand has been removed, use a shop vacuum to clean up any remaining particles. Make sure to empty the vacuum when it gets full.
4. Finally, use a scrub brush to remove any of the leftover pieces or debris from the surface of the patio or walkway. Rinse the area with water to completely remove all of the debris.
Remember to wear the proper safety equipment, such as gloves and goggles, when using the pressure washer and the shop vacuum. Following these steps should ensure that the old polymeric sand is safely removed from the patio or walkway.
How often does polymeric sand need to be replaced?
Polymeric sand has been designed with an estimated lifespan of 10-15 years; however, this can be affected by exposure to extreme weather conditions and regular foot traffic. For example, if you have a patio or walkway with a lot of foot traffic, you may need to replace the polymeric sand more frequently to maintain a strong bond between the pieces of pavers.
Generally, if you notice any gaps or cracks forming and the sand is no longer providing a stable and solid foundation, it’s time to replace it with fresh polymeric sand. Additionally, it’s best to reapply polymeric sand every 3-4 years as part of an ongoing maintenance plan to ensure your space stays well-protected and looking great.
Can you power wash polymeric sand?
Yes, you can power wash polymeric sand. However, it is important to keep in mind that power washing polymeric sand can potentially damage or disrupted the sand, so it is important to use on the lowest pressure settings or use a garden hose with a detachable sprayer and a soft water flow to rinse off the polymeric sand.
It is also important to allow the polymeric sand to dry completely before power washing, to reduce the amount of splashback. When pressure washing polymeric sand, it is important to use a wide spray as high pressure jets of water can damage the sand grains, especially if the sand has not been allowed to fully dry before power washing.
Does vinegar remove polymeric sand haze?
Yes, vinegar can be used to remove polymeric sand haze from concrete and pavers in a variety of applications. Polymeric s and typically contains a base polymer combined with a dry sand that fills in the crevices and joins pavers together.
The dry sand, however, often leaves a hazy residue when exposed to water, and the residue may remain visible until it is removed. Vinegar can be used to effectively remove this haze without the need for special cleaners or other abrasive methods.
Mix one part vinegar and three parts water, coating the affected area with the cleaning solution and allowing it to sit for several minutes to loosen the hardened haze. Scrub the affected surface with a stiff-bristle brush to loosen the haze and aid in the dissolution of the residue.
Rinse the surface with a garden hose, being careful to remove all traces of the cleaning solution. Repeat the process if necessary and always avoid using any harsh chemicals on the surface that could damage the pavers or concrete.
Does polymeric sand stain pavers?
No, polymeric sand does not typically stain pavers. Polymeric sand is a mixture of sand, binding agents, and water-absorbing polymers. It is designed to harden when exposed to moisture, which locks the particles together and creates a secure footing for pavers.
Polymeric sand is designed to fill large cracks and joints in paver-layouts and does not contain any pigments or dyes so it will not stain the pavers. Polymeric sand also reduces weed growth, and helps with drainage, which can help prevent future staining issues.
How do you get white haze off pavers?
To get white haze off pavers, it is important to first identify the cause of the white haze on your pavers. If the white haze is caused by a combination of dirt, grime, soap, or other contaminants, then you can use a high-pressure power washer to remove it.
Start by pre-spraying the pavers with a degreasing solution, then proceed to rinse away the dirt and grime using the high-pressure power washer. Be sure to keep the surface wet while rinsing and ensure that the nozzle is set to a wide angle sprayer.
If the white haze persists after rinsing, then you can use a stiff-bristle brush to scrub the pavers. Make sure to use the appropriate cleaning agent that is specifically formulated for use on concrete and masonry surfaces.
Rinse the pavers again with the power washer to get any remaining residue off before it dries. If the white haze is caused by efflorescence, you may need to use a paver sealer to help reduce and prevent the problem from returning.
What happens if it rains on polymeric sand?
If it rains on polymeric sand it can create a few problems for your paving project. The most common problem is that the water can cause the sand to wash away or become dislodged from the joints between the pavers, which can leave your patio or walkway looking uneven.
Additionally, the water can cause the sand to become saturated and unsuccessful in binding the pavers together. Finally, the rain could also cause the polymeric sand particles to swell, which can make them become even more firmly stuck in the joints and harder to remove.
In order to avoid these issues, it is essential to ensure that the polymeric sand has been sealed properly after installation. A solution of water and a sealer can be applied to the paving project to protect the sand from the elements and ensure that it stays in place.
Additionally, make sure that the sand is installed in a location where it will not be exposed to heavy rain—such as in the shade of a house or under a patio cover—and that any drainage ditches or other elements are in place to safely channel any water away from the sand.
Does water go through polymeric sand?
No, polymeric sand does not allow water to pass through it. Polymeric sand is a special type of sand that can be used in areas between pavers that contain water. It is designed with polymers that bind the sand particles together, helping to solidify the joints between the pavers and keeping out unwanted pests and weeds.
Because the polymers act as a barrier, water is not able to permeate through the sand and will stay on the surface or run off into the surrounding area. This makes polymeric sand an ideal choice for areas with water, like patios and walkways, because it will help keep your landscaping looking pristine and weed-free.
How do you sand and reseal pavers?
When sanding and resealing pavers, the most important step is to make sure the area is clean and dry before starting. The best way to clean pavers is to use a pressure washer to remove any dirt or debris.
After the area is cleaned, allow the pavers to dry completely before applying any sealer.
Once the pavers are completely dry, it is time to begin the sanding process. Start by spreading a thin layer of masonry sand or play sand over the pavers. Use a push broom or a garden rake to work the sand into the joints between the pavers.
Work the sand until it is flush with the surface of the pavers.
Now the sealant can be applied. Typically a high-grade commercial acrylic sealer is used. Make sure to apply generous coats to the surface of the pavers to allow the sealant to soften and form a strong bond with the pavers.
Allow the sealant to cure for 24 to 48 hours before walking, driving, or using your pavers.
By following these steps, you can ensure that your pavers remain in good condition for many years to come.