Q: What is the whitish residue that I have noticed on some of my pavers?
This residue is often referred to as efflorescence, and is both normal and common in concrete and clay brick products. This phenomenon is caused by the natural salt minerals present in the materials used in the production; it is not a product defect nor is it harmful to pavers. The residue will actually fade away with time (within 6 months to a year). We recommend using Techni-Seal's Efflorescence Cleaner, which can also be used as a multi-purpose cleaner.
Q: Can I use pavers on my pool deck? What are the benefits to doing so?
Using pavers will not only provide a beautiful pool deck, it will create a safer surface that prevents slipping. In addition, pavers provide a cooler walking area and can handle moisture better than concrete surfaces. For a gorgeous pool coping, we suggest our Neptune cap stone or our Bullnose cap with rounded edges. Be sure that the base material surrounding the pool is well compacted prior to installing the pavers. To provide added security to your pool deck, safety covers may be installed over pavers using special anchors.
Q: Is it possible to lay pavers over an existing concrete walkway that is in good shape?
Even though we do not recommend doing so, it is possible. There are two major things to consider: First, this will raise the project site by about 2" to 3". Second, the contraction that can result in the concrete slab in colder weather will, in the same way, affect the pavers. Therefore, you must also take into consideration doorways or other areas that may be affected.
Q: Can damaged pavers be replaced?
Yes. However, it would be wise for you to set aside a few extra pavers as replacements when doing the original installation. To replace a paver, remove the sand joint around the paver. Next, use two screwdrivers to remove the paver, and replace it with the new paver. Fill the joint with sand and compact the entire area using a rubber mallet.
Q: What about removing snow from pavers?
Just like concrete and asphalt pavements, pavers can be plowed and shoveled. Actually, the edges and joints around the pavers assist in melting snow and ice. Using de-icing salt (sodium chloride or calcium chloride) to remove snow and ice will not harm paving stones.
Q: Are pavers and slabs slippery?
No. Whether the ground is wet or dry, their texture provides excellent traction for pedestrians and motor vehicles alike.
Q: Can freeze/thaw cycles damage pavers or slabs?
No. Damage caused by freezing is virtually non-existent. Joints between concrete units (pavers, slabs, walls) allow them to move without breaking or cracking. The quality of the concrete used also allows each unit to withstand freezing.
Q: What can be done to remove moss from the joints of my pavers?
There is little that can be done in damp, shaded areas to prevent moss from continuously growing. However, you can try using 10 parts water to 1 part chlorine bleach to remove the moss. To resolve the problem permanently, consider professional advice to correct the moisture that encourages the growth of moss.
Q: Should I seal my pavers?
Sealants will provide additional protection against stains and make maintenance easier. While simultaneously enhancing the colour of the stone, the decision to use a sealant is above all a matter of taste. We recommend keeping extra paving stones on hand in the event that you encounter unacceptable staining, so that you can easily replace any pavers. (Dot lines change slightly, it's just the natural order of things. Making sure all your pavers are from the same batch will help ensure the color consistency of the project.)
Q: Should I use a filter fabric under my installation, and if so when and where should it be used?
We strongly recommend using a filter fabric under pavers to prevent the base from deteriorating and failing. The filter fabric should be laid on the top of the compacted soil in the excavated area to help control the aggregate base material from passing into the soil sub-grade (especially in areas that contain mostly clay).
Q: Is it possible to use pavers for a driveway?
Absolutely. For residential driveways, be sure that you use the recommended 16" compacted base material.
Q: What is the difference between pavers and stamped or patterned concrete?
Stamped or patterned concrete are merely slabs of concrete with a design and/or pattern. These are prone to problems of deterioration and fracturing, especially in freeze/thaw environments. Paving stones are guaranteed against fracture or deterioration. Pavers can be moved and replaced when needed (e.g. for the installation of utility wires or an in-ground sprinkler system, something concrete pavements does not allow you to do).
Q: Is the color consistent throughout pavers?
All products (paving stones, wall stones, slabs) are manufactured with a process that creates a complete pigmentation throughout the entire stone. As a result, the color will not fade over time.