Remove grout and cement veil from tiles

Famous and notorious is the so-called cement veil, which lays down after grouting over tiles. With only a few cleaning jobs, the speed is as great as when removing joint mortar or grout. For work planning when grouting always includes the appropriate cleaning equipment.

Brushed mortar remains and veil

Many mortars are absorbed in joints. They cover the surfaces of the tiles and must be removed thoroughly and promptly. While individual overflowing mortar lumps and beads can be removed mechanically, the large-scale veil of cement must be wiped off. It is often not well visible when wet. Prophylactically, however, the cleaning should always be carried out, since stains that become visible after drying can only be removed much more difficultly.

Ceramic tiles

Ceramic tiles with glaze are relatively easy to clean because they also withstand aggressive cleaning substances. To remove mortar from tiles that have a sealed surface, the following cleaning agents are suitable:

  • Special cement fog remover
  • Citric acid mixed with lukewarm water
  • Acetic acid or vinegar essence mixed with hot water
  • Detergent paste that is brushed
  • cola

Natural stone tiles

Unsealed natural stone tiles must not be treated with acidic agents. When grouting should be dispensed with slurrying. Ideally, the surface edges are taped next to the joints.

When mortar needs to be removed from stones, a slightly acidic or pH neutral cleaner is helpful. Before large-scale use, the effect of the agent on the stone should always be checked at a hidden point. After an exposure time of two hours, it is possible to judge whether the surface can withstand the cleaning agent.

If detergents do not produce the desired results or are incompatible with the surfaces, mechanical methods must be used. Generally there is always a cleansing effect when polishing. Special polishing tips develop an adhesive effect and attract the residues of the mortar veil. Polished stone oils can reduce the streaks.

Remove chemically enriched mortar substitutes

If no normal cement mortar or mortar with chemical additives is used during grouting, the ingredients are decisive for the removal. For many grouts, a cleaning effect can be achieved with heat. The principle is similar to the ironing of wax stains from textile fabrics.

Tips & Tricks

For larger and dried mortar remnants on tiles you can borrow a mortar cutter in the hardware store.

Artikelbild: FotoDuets / Shutterstock

Video Board: How to Remove Grout and Cement Residues