weber.fug 873

Colour:
medium grey

Water demand:
approx. 5.0 - 5.5 liters / 25 kg

Storage:
The product can be stored at least 9 months in its original unopened packaging, if kept dry and protected from moisture.

Fields of application

weber.fug 873 is used for the grouting of 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 on heated floors in living rooms and domestic bathrooms, on balconies/terraces, in swimming pools, pool surrounds, shower facilities, workshops, cold storage rooms, washing facilities, commercial kitchens, storage and sales rooms, industrial and commercial premises. For use indoors and outdoors.

Produkteigenschaften

• EMICODE EC 1PLUS: very low emission of volatile substances
• class CG 2 WA: CG: cement-based grout – 2 WA: low water absorption (W) and high abrasion resistance (A)
• for joint width from 3 mm up 15 mm
• one-component
• high mechanical strength and abrasion-resistance
• fulfills the KSW recommendations for swimming pools (Germany)
• good resistance against chemicals with a pH value > 4.5
• increased resistance against acid cleaning agents
• resistant to high pressure cleaners up to +150 °C and 100 bar
• frost-resistant
• for commercial and industrial premises
• for walls and floors
• for use indoors and outdoors

General notes

• Limits of use: do not use weber.fug 873 for terracotta, glass mosaic, glass tiles and moisture (discoloration)-sensitive natural stones; in these cases, use a specific Weber grout, depending on material and joint width. Request technical advice.
• 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 (for ex. Lappato), 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.
• For grouting natural stone slabs (not sensitive to moisture and discoloration) follow the supplier’s recommendations; if in doubt, carry out a test on a trial area.
• 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

• Only use cleaning agents for floor care after approx. 7 days. Follow the supplier’s recommendations relative to their dilution rate.
• Use only cleaners approved for ceramic tiles in swimming pools.
• Observe the chemical resistance chart of the product.
• As a rule, pre-wet the joints well before using cleaners.
• 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 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.