weber.fug 872

Colours:
cement grey, medium grey

Water demand:
approx. 4.5 - 5.5 liters / 25 kg

Storage:
The product can be stored at least 12 months in its original unopened packaging, if kept dry and protected from moisture.

Fields of application

weber.fug 872 is used for walls and floors in living rooms, domestic bathrooms and showers, wet-duty areas (balconies/terraces), areas permanently underwater (fountains etc.) and heated floors. For grouting wall and floor ceramic tiles, mosaic, stoneware brick slips, porcelain stoneware, stoneware, earthenware, split tiles and natural stone slabs which are not sensitive to moisture (discoloration). For use indoors and outdoors.

Main features

• EMICODE EC1PLUS: sehr emissionsarm
• class CG 1: CG: cement-based grout – 1: all characteristics comply with the minimum requirements
• for joint width from 3 mm up to 20 mm
• slurry-like (brush) consistency cement grey
• easy application
• light-fast colours
• for walls and floors
• for use indoors and outdoors

General notes

• Limits of use: do not use weber.fug 872 for natural stones, resin-bound slabs (“engineered stones”) and materials with sensitive surface; in these cases, we recommend the ceramic and natural stone grout with crystal effect weber.fug 875 F.
• Do not use in drinking water tanks and in swimming pools; in these cases use the highstrength cement-based grout (CG2 WA) for areas subject to high loads weber.fug 873 or the epoxy resin adhesive and grout weber.xerm 848.
• All characteristics mentioned in this data sheet are based on a temperature of +23 °C without draught and a relative humidity rate of 50%.
• High temperatures and low humidity rates accelerate, low temperatures and high humidity rates delay the setting process.
• Substrates with different porosity, type of material to be laid and joint sides can lead to colour differences once the grout has completely set.
• Mortar residues can accumulate on tiles with microporous, porous, textured (rough) or matt glazed surfaces; if in doubt, carry out a test on a trial area to ascertain if discoloration is likely. If necessary, pre-wet the surfaces in order to prevent discoloration.
• Corner joints, connection joints to installed components and pipe ducts must be closed with an elastomeric silicone-based joint sealant, like weber.fug 880, 881 or 883 in accordance with the job site requirements.
• The type and appearance of material to be laid might have an influence on the final colouring of the grout; if necessary, carry out a test on a trial area.
• Do not use material that has already stiffened.

Special notes

• Do not use highly-acid cleaning agents or high-pressure/steam jet cleaners on the grouted surfaces.
• Wait for 14 days before using conventional household cleaners.
• In outdoor areas discoloration, washout (fading) and efflorescence due to environmental factors cannot be ruled out.
• In case of use in areas permanently underwater, a corrosion on the cement-based grout should be anticipated if the water is too soft. Therefore, the water must contain a minimum content of calcium carbonate per liter. Comply with the national standards and/or guidelines relating to the grade of local water hardness (for ex. hardness scale in Germany ˃ 5°); if not issued, request technical advice.