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C2 Safe Prep - 20L

C2 Safe Prep 20 Litres

Regular price $679.45 + GST
Regular price Sale price $679.45 + GST
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Product Information

C2 Safe Prep 20 Liters

C2 Safe Prep is an effective, safe alternative to traditional acidic compounds for cleaning and preparing horizontal or vertical concrete for application of additional coatings, including hardeners/densifiers and clear or pigmented coatings. C2 Safe Prep rids concrete of embedded oil, grease, excess mortar, efflorescence and dirt. The cleaner also dissolves a small amount of surface cement, while leaving the aggregate untouched. That mild ?etch? creates greater surface area for more complete penetration and effectiveness of any protective treatment. It?s ideal for projects where traditional acidic cleaners are not allowed. Non-fuming C2 Safe Prep contains no hydrochloric or other traditional inorganic acids and is safe for use on and around most metal surfaces. Additionally, it is up to 70 percent more effective than citric and glycolic acids, and 50 percent more effective than phosphoric acid.

  • Non-fuming solution that prepares the concrete for product application.
  • Safely etches the surfaces and removes common construction soiling.
  • Will not harm most cleaning equipment or metal surfaces.


  • Proven effective for removing common construction soiling, including mortar smears.
  • Replaces traditional mineral and organic acid products.
  • Removes efflorescence on decorative paving treatments.
  • Low odor and water-rinsable.
  • Non-fuming and environmentally responsible.
  • Will not harm most cleaning equipment or metal surfaces.
  • Safe for interior cleaning.


  • Not suitable for polished/unpolished marble, limestone or travertine.
  • May cause discoloration and corrosion on certain types of metals. ALWAYS TEST IT FIRST.


Protect people, vehicles, property and all surfaces not set for cleaning from product, splash, wind drift, residue and rinse water.

When possible, finish cleaning before installing windows, doors, light fixtures, hardware, surrounding metal and other items that may be damaged by cleaning. If already in place, protect. Extended contact with the cleaning solution or its vapors may result in discoloration or damage. All caulking and sealant materials should be in place and thoroughly cured before cleaning.

Surface & Air Temperatures

Best results are obtained when air and masonry surface temperatures are 4°C (40° F) or above. To avoid harm to masonry, do not clean when temperatures are below freezing or will be overnight. If freezing conditions exist prior to application, let the masonry to thaw.

Packaging 3.5L, or 20L containers


Apply using low-pressure (50 psi max) sprayer, roller or densely filled masonry washing brush. Do not use high-pressure spray. Do not atomize.

Rinse with enough water and pressure to flush spent cleaner and dissolved soiling from the masonry surface and surface pores without damage. Inadequate rinsing leaves residues which may stain the cleaned surface.

Masonry-washing equipment generating 400?1000 psi (2.75-7 MPa) with a water flow rate of 22-30 liters/min (6?8 gallons/min) is the best water/pressure combination for rinsing porous masonry. Use a 15?45° fan spray tip. Heated water (65?82° C; 150?180° F) may improve cleaning efficiency. Use adjustable equipment for reducing water flow rates and rinsing pressure as needed for sensitive surfaces.

Rinsing pressures above 1000 psi (7 MPa) and fan spray tips smaller than 15° may permanently damage sensitive masonry. Water flow rates less than 22 liters/min may reduce cleaning productivity and contribute to uneven cleaning results.

Storage & Handling

Store in a cool, dry place. Always seal container after dispensing. Do not alter or mix with other chemicals. Published shelf life assumes upright storage of factory-sealed containers in a dry place. Maintain temperatures of 7?38°C (45?100°). Do not double stack pallets. Dispose of unused product and container in accordance with local regulations

Dilution & Mixing

C2 Safe Prep may be diluted with up to three parts clean water, depending on the nature and severity of soiling.

Always pour water into empty bucket first, then carefully add concentrate.

Application Instructions

Exterior Surfaces

1. Use clean water to thoroughly pre-wet surface to be cleaned. On vertical surfaces, work from the bottom to the top.

2. Apply liberally. Do not atomize.

3. Let the cleaning solution dwell 3?5 minutes.

4. Reapply. Light scrubbing of the surface improves cleaning results especially where high pressure rinsing equipment is not available. Do not let cleaning solution ?dry into? the surface. If solution starts to dry, reapply. NOTE: Thorough rinsing is extremely important. As much water pressure as possible (without damaging the surface) should be used to ensure that all staining elements are completely removed.

5. Rinse with clean water, covering each section of the surface with a concentrated stream of water. On vertical surfaces, work from the bottom to the top, keeping lower surfaces rinsed clean and free of cleaner residue.

Interior Surfaces

Proper ventilation is necessary. Follow exterior application procedures. If pressure-rinsing is not possible, use a sponge or soft-fibered brush to rinse thoroughly with clean water.


Clean tools and equipment with fresh water.

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