weiss™ CSR Extra is a cleaning solution made from phosphoric acid for removing cement and mortar haze from acid-resistant stone, porcelain, clay paving, masonry and brickwork. Effective on polymer modified cement, calcium aluminate and hybrid mortars. Inhibits rust and removes efflorescence. Use with caution on precast concrete, marble, limestone and sandstone.

  • Acid-based cleaner for hard surfaces and paving

  • Removes cement residue and mortar haze

  • Effective on polymer modified and hybrid mortars

  • Inhibits rust formation on treated surfaces

  • Removes efflorescence from paving and masonry

  • Suitable for use on acid-resistant stone, porcelain, clay, masonry and brickwork

  • Jointing mortar colour may be affected

Applications

Cleaning cement and mortar residues from paving, brickwork, masonry, acid-resistant stone, porcelain and clay surfaces

Dimensions

5litre plastic canister

Materials

Phosphoric acid solution

Performance

pH ~1

Typical coverage 10-15m² per 5litres

Installation

Apply neat or diluted (up to 1:20 with cold water) to surfaces above 5°C

Brush vigorously and rinse thoroughly with water

Do not allow to dry on surface

Wear suitable protective clothing

Maintenance

Clean with pH-neutral cleaner after use to remove acidic waste and cement dust

Warranty

Storage life =24months in original container