weber.fug 877 grout manhattan 5 kg
€28.49
- One mortar for narrow and wide joints
- Adheres well to the flanks, the joint does not crack open
- Can be walked on after a short time, on walls and floors
- Also approved for wet and permanently submerged areas
- 14 days right of withdrawal
- Expert advice: 02831 9167703 Mon–Thu 9–16, Fri 9–12 (CET)
- Specialist dealer in Kevelaer, Lower Rhine
Description
Colour manhattan. Saint-Gobain weber.fug 877 is a flexible joint mortar based on cement for ceramic wall and floor coverings indoors and outdoors. It is classified as CG2 WA to DIN EN 13888, i.e. an improved cementitious mortar with reduced water absorption, and covers joint widths from 2 to 20 mm. This variant comes in a 5 kg foil bag.
Advantages at a glance
- One compound for all joint widths: from 2 mm fine joints to 20 mm wide joints, no product change on site.
- Water-repellent to standard: CG2 WA to DIN EN 13888, therefore also approved for damp, wet and permanently submerged areas.
- Quickly usable again: walkable after 2 hours, mechanically loadable after approximately 3 days.
- Withstands movement: frost and thaw resistant, temperature resistant from −20 to 70 °C, approved for heated tile assemblies.
- Good edge adhesion: high fill level, the joint does not crack at the edges.
- Also tested for shipbuilding: certified by Det Norske Veritas for use on American cruise ships.
Areas of application
- Ceramic wall and floor coverings, mosaics and strips of porcelain stoneware, stoneware and earthenware
- Split tiles and deformation-resistant artificial stone slabs
- Bathrooms, showers and commercial wet rooms
- Balconies, terraces and façade coverings
- Heated tile assemblies over underfloor heating
- Permanently submerged areas outside drinking water tanks and swimming pools
Limitations & notes
Not suitable for drinking water tanks and swimming pools; in other permanently submerged areas the water must be harder than 5 °dH. Movement joints, perimeter joints and pipe-penetration joints do not belong in cementitious mortar; they are sealed elastically with silicone. Do not use strongly acidic cleaners or high-pressure or steam cleaners on the finished surfaces; ordinary household cleaners only after 14 days. Outdoors, discolouration, washout and efflorescence due to environmental conditions cannot be ruled out. The type and appearance of the covering may alter the colour effect – if in doubt, prepare a test area.
Hazard statements: Danger. H315 Causes skin irritation. H318 Causes serious eye damage. H335 May cause respiratory irritation. Safety data sheet available from the manufacturer.
Application & tips
The joint grid must be dry, uniformly deep and free of adhesive mortar residues; allow the tile adhesive to cure completely beforehand, otherwise colour differences will occur. Pre-wet strongly and unevenly absorbent coverings with clean water. Add 2.8 to 3.1 litres of water per 15 kg of powder and mix each batch with the same fixed amount of water – varying water addition is the most common cause of colour variations. Work in diagonally with a grout float, processing temperature 5 to 30 °C, working time approximately 30 minutes. Cementitious, alkaline: wear FFP2 dust mask, safety goggles and gloves when mixing; rinse splashes immediately with water. Walkable after 2 hours, mechanically loadable after approximately 3 days, fully loadable after 7 days. Store dry and protected from moisture: in the foil bag at least 15 months.
Technical data
| Area of use: | Exterior, Interior |
|---|---|
| Colour: | anthracite, cement grey, manhattan, medium grey, silver grey |
| Material: | Cement |
| Pack size: | 5 kg bag, 15 kg bag |
| Technical data | |
|---|---|
| Contents: | 5 kg |
| Supplied as: | 5 kg film bag |
| Classification: | CG2 WA to DIN EN 13888 |
| Joint width: | 2 – 20 mm |
| Water requirement: | 2.8 – 3.1 l per 15 kg |
| Application temperature: | 5 – 30 °C |
| Working time: | approx. 30 minutes |
| Walkable after: | 2 hours |
| Can bear mechanical load after: | approx. 3 days |
| Full load after: | 7 days |
| Temperature resistance: | −20 to 70 °C |
| Application tool: | Grout float |
| Composition: | Cement, fillers, lightfast pigments |
| Consumption | |
| Mosaic 5 × 5 cm: | approx. 1.3 kg/m² |
| Tiles 20 × 20 cm: | approx. 0.7 kg/m² |
| Split tiles 24 × 11.5 cm: | approx. 2.3 kg/m² |
| Standards | |
| Standard: | DIN EN 13888 |
| Storage | |
| Shelf life: | 15 months |
| Safety | |
| Signal word: | Danger |
| Hazard statements: | H315, H318, H335 |
| Product type: | Grout |
Frequently asked questions
Which joint widths can I use weber.fug 877 for?
The technical data sheet specifies 2 to 20 millimetres. The grout therefore covers fine joints in mosaic as well as wide floor joints, so you do not need a second product.
How much material do I need per square metre?
According to the data sheet, roughly 0.7 kg/m² for 20 × 20 cm tiles, about 1.3 kg/m² for 5 × 5 cm mosaic and about 2.3 kg/m² for 24 × 11.5 cm split tiles.
Is the grout suitable for showers, balconies and underfloor heating?
Yes. The grout is water-repellent to CG2 WA, resistant to frost and freeze-thaw cycles, and approved for heated floor constructions. It must not be used in swimming pools or drinking water tanks.
Why do my joints look blotchy or vary in shade?
Usually this is caused by uneven amounts of mixing water or by a bedding mortar that is still damp. Mix every batch with the same amount of water and let the adhesive dry out fully beforehand.
Manufacturer information
Manufacturer information pursuant to Art. 19 EU GPSR
Postal address
Saint-Gobain Weber GmbH
Willstätterstraße 60
40549 Düsseldorf
Germany
Electronic address info@sg-weber.de
All products by Saint-Gobain Weber
Information as of: 2026-11-02
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