paverCareProduct Care and Stain Removal

General Care:

Basic Cleaning

The best way to clean pavers is to use hot, soapy water and a stiff bristle scrub brush. We recommend that you use a liquid, acid-free soap. Simple Green, sold in many grocery, hardware, and home center stores, is also very effective and non-harmful to plant life and other vegetation. After scrubbing, wash the dirt and debris off with clean water. If you use a hose, be careful to not loosen or spray away your joint sand.

Pressure washers are not recommended as they can remove the cement paste from the surface causing scarring and can also remove joint and bedding sand. Mechanical cleaners with rotating brushes have been found to be effective.

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Removing Efflorescence

Efflorescence is a whitish, powder-like deposit that may sometimes appear on the surface of the paving stones. It may appear immediately or within a short time after installation. Left alone, normal wear and exposure to the elements will dissipate the efflorescence. Efflorescence does not affect the structural performance or durability of concrete pavers.

If there is a need to remove the efflorescence before it naturally wears away, best results are obtained by using an efflorescence remover which is available from most mason supply dealers. Do not use muriatic acid.

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Removing Mold or Moss

Try liquid bleach diluted in water (10 parts water to one part bleach). Be careful not to get it on plant material. Keep in mind that there is nothing that will keep moss and mold from reappearing in a shady, damp area.

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Stain Removal

The stain removal methods suggested here are merely a guide and may not work to your satisfaction in all instances. Nicolock is not responsible for any damage caused while using theses methods. Nicolock recommends that you keep several pavers from your initial installation available to replace any pavers that become damaged or excessively stained or soiled.

  • Asphalt and emulsified asphalt: Chill with ice (if warm outside), scrape away & scrub the surface with scouring or abrasive powder. Rinse with water.
  • Candy, ketchup, mustard, grease drippings from food: For stubborn stains, apply liquid detergent full strength and allow it to penetrate for 20-30 minutes. Scrub and rinse with hot water. Removal is easier if these stains are treated immediately.
  • Caulking: Scrape off excess and scrub with denatured alcohol. Rinse with hot water and detergent. For acrylic latex caulk - follow guidelines for removal of latex paint.
  • Chewing gum: Same as caulking, or scrub with naphtha.
  • Clay soil: Scrape off dry material, scrub and rinse with hot water and strong detergent.
  • Creosote: Apply a solution made with paint thinner and talc. Scrub and allow to dry. Scrape off, scrub with scouring powder and rinse with water.
  • Cutback asphalt & roofing tar: Use a soft moist putty made with talc or diatomaceous earth (available wherever pools supplies are sold.) Mix with kerosene, scrub, let dry and brush off. Repeat as needed.
  • Dried paint: Scrape any excess oil-based paint, varnish or water based latex paint off the surface. Apply a commercial paint remover and let sit for 20-30 minutes. Loosen with gentle scrubbing. Do not rub the loosened paint into the surface of the pavers. Instead, blot up the loosened paint and thinner. Repeat as necessary.
  • Leaf, wood rot or tobacco stains: Apply household bleach diluted 10:1 with water (10 parts water) and scrub with a non-metallic stiff bristled brush.
  • Mortar: Let dry but not harden and carefully remove spots with a trowel, putty knife or chisel.
  • Oil or grease that has penetrated: Mop up any excess oil with rags. Cover the area with oil absorbent talc, (kitty litter).  Diatomaceous earth can also be used.  Leave it on the stain for a day, then sweep up.
  • Paint: Fresh paint should be mopped up immediately with rags or paper towels by blotting. Do not wipe as this will spread the paint and extend the job of removal. If the paint is latex and water-based, soak and then scrub area with hot water, scouring powder and a non-metallic stiff brush until no more improvement is seen. Let the remaining paint dry and remove as described below.
  • Rust: There are rust removers specifically formulated for concrete pavers which are available at any authorized Nicolock Hardscape Dealer. "Find A Dealer."
  • Tire skid marks: Scrub black area with water, detergent and scouring powder.

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