Execution of a mineral waterproofing and tile fixing in swimming pools

Tile coverings in swimming pools not only have to meet ever higher aesthetic requirements, they are also subject to the highest stresses. Careful detailed planning and construction are important prerequisites for ensuring long-term operational reliability. This also includes the use of products that have been tested in practice and certified for the specific application. For brine pools and similar pools, waterproofing and installation systems based on reactive resins are used due to the high stresses involved.

Simple & safe to the goal

  1. Substrate preparation

    1. If necessary, the substrates should be roughened mechanically by means of grinding, milling or a damp, sand or shot-blasting process to improve the bonding.

  2. 2. Levelling work is done with the quick-setting levelling mortar weber.plan 819.

  3. 3. Use the primer weber.prim 801 on absorbent substrates.

  4. Application

    1. In corners, expansion joints, butt joints and movement joints, first insert all the necessary components of the sealing system weber.tec 828 (such as sealing tape as well as inner and outer corners) into the freshly applied layer of the waterproofing slurry weber.xerm 844.

  5. 2. The stainless steel installation parts are cleaned and ground.

  6. 3. Then they are waterproofed with weber.xerm 844.

  7. 4. The first layer of the flexible slurry weber.xerm 844 is applied with a solid brush or a block brush. This guarantees that the smallest pores and honeycombs are filled and closed.

  8. 5. The second layer of the flexible slurry weber.xerm 844 can be applied with a flat trowel. The minimal dry layer thickness of both waterproofing layers must be ≥ 2.0 mm.

  9. 6. Upon drying of the waterproofing slurry a 14-day trial filling of the pool with chlorinated water is to be carried out to check the water impermeability.

  10. Tile fixing

    1. After successful water trial filling, apply a contact coat of weber.xerm 852 (flexible tile and stone adhesive) or 861 (multi-use flexible tile adhesive) on the dried waterproofing layer with a smoothing trowel. Immediately after comb down a uniform adhesive bed with a notched trowel at an angle of 45° - 60°.

  11. 2. For reaching a void-free adhesive mortar bed it is imperative to choose the combined laying method (floating-buttering method). The aim is to achieve a contact of 95% between tile backside and substrate (full saturation bedding). Before a skin starts to form (check the tackiness of combed down tile adhesive with the finger) slide the tiles into the fresh mortar bed and press down.

  12. Grouting

    1. After hardening of the tile adhesive, the joints between tiles can be grouted with the high strength grout weber.fug 873.

  13. 2. Connection and movement joints must be closed with the specific elastic silicone joint sealant weber.fug 882 for swimming pools. For better bonding, use the primer weber.fug 884 (absorbent joint sides) or weber.fug 885 (non-absorbent joint sides).