weiss CSR Extra

weiss CSR Extra removes cement and mortar haze from acid-resistant stone, porcelain and clay paving, masonry and brickwork.

Formulated to be additionally effective on difficult to remove polymer modified cement products, calcium aluminate and hybrid mortars.

Use with caution on precast concrete, marble, limestone and sandstone.  Jointing mortar colour can be affected.

Test an inconspicuous area and dilute if necessary, maximum dilution of 1:20 with cold water.

Wear suitable protective clothing while using CSR Extra. Contains Phosphoric acid with a pH of ~1.

Advantages:

• Removes cement residue
• Suitable for paving, brickwork and masonry
• Inhibits rust formation
• Removes efflorescence from affected paving and masonry.

Available sizes:

• 5-litre plastic canister

Directions: 

• Apply when the surface is at least 5°C.
• Apply neat or diluted CSR Extra to the affected area.
• Brush vigorously until the staining has been removed.
• Do not allow CSR Extra to dry on the surface.
• Rinse the area thoroughly with plenty of water.
• Clean with pH-neutral weiss Pave Clean Pro to remove traces of acidic waste and cement dust.
• Repeat the process if necessary.

Typical Coverage:

10-15 m² per 5 litres.

Storage:

≥24 months following delivery stored in original container.