I have a rotting railroad tie wall that is falling down. What can I do?
Our segmental retaining wall systems provide an excellent solution to this problem. They are strong enough to last a lifetime. Nicolock offers several different wall systems to meet your needs.
What is geogrid and when should it be used?
As a rule of thumb, all walls over three-feet high should be reinforced with geogrid. Geogrid is placed between the layers of block at different intervals to stabilize the soil behind the retaining wall and secure the wall face to the earth behind it. The height of the finished wall, soil characteristics, and the pressure on the wall caused by slopes, structures and/or paved areas all affect the proper placement and lengths of geogrid.
I have white deposits on my pavers/walls, what are they?
Efflorescence is a natural and common occurrence in many concrete products. Efflorescence occurs when natural salts come to the surface and leave behind a white deposit that can normally be brushed off. This is not a product defect or harmful to pavers and walls. Nicolock accepts no liability for its occurrence. It usually wears away with time.
What are the benefits of sealing my pavers? How long do I need to wait before I apply a sealer?
Sealers help resist stains and can enhance the color. Some can also bind the sand in the joints to make it difficult for weeds to germinate. Wait at least six months to allow any efflorescence to appear. Prior to the application of any sealers, pavers must be cleaned with an appropriate product to remove dirt and efflorescence.
What can I do if my pavers are stained or damaged?
See our guidelines for stain removal in Product Care. If pavers are exceptionally stained or damaged, individual units can be removed and replaced. Remove the sand around these pavers and use two flathead screwdrivers to lift the paver out. Rocking the paver gently in a back-and-forth motion will facilitate removal.
Is there a way to remove gas or oil from my pavers?
If it’s a small area, remove the stained pavers and replace them. Otherwise mop up any excess oil with rags. Cover the area with oil absorbent talc or kitty litter. Diatomaceous earth can also be used. Leave it on the stain for a day and then sweep.
How do I keep my pavers clean?
The best way to clean pavers is to use hot, soapy water and a stiff bristle scrub brush. A liquid, acid-free soap is recommended. Simple Green, sold in many grocery, hardware and home center stores, is also very effective and safe for plant life and other vegetation. After scrubbing, rinse dirt and debris with clean water. If using a hose, be careful to not spray away your joint sand. Pressure washers are not recommended as they can cause scarring by removing the cement paste from the surface and can also remove joint and bedding sand. Mechanical cleaners with rotating brushes have been found to be effective.
How can I remove moss or mold from my pavers?
Use liquid bleach diluted in water (10 parts water to one part bleach). Be careful to avoid plant material. Keep in mind moss and mold may reappear in shady, damp areas.
Will weeds grow between my pavers?
Weeds and grass occur when seeds or spores lodge in the joints between pavers. They will not grow from underneath. This can be minimized by using polymeric sand or by mixing a pre-emergent granular weed killer into the joint sand. If weeds do appear, a spot vegetation killer (such as Round-Up™) can be used and will not damage the pavers.
For snow removal, is it ok to use a shovel, a plow, or even a snow blower?
Pavers can be plowed and shoveled just like asphalt, concrete and other pavement materials. In fact, snow and ice will normally melt faster because of the joints around the pavers. A plow blade with a rubber edge is recommended. Do not use sharp objects to chop ice as they can damage the pavers. Using a snow blower on your pavers is perfectly fine; however, be careful not to scrape the pavers with the steel housing of the snow blower, which can cause damage.
What should I use to melt snow and ice on my pavers?
Nicolock recommends using rock salt to remove snow and ice from pavers. The use of magnesium chloride or other chloride products are not recommended and will void the warranty as they may harm the structural integrity of your pavers over time.