Common issues and queries you can face
Step by step solution
Organize the works so that tile fixing will not be performed on surfaces exposed to the sun.
Surface must be clean, dry, sound and free from dust, dirt, oil, grease or any contaminating material,...etc.
Use a concrete repair mortar to repair holes and defects.
Brick and block work
Allow at least 6 weeks before tiling, ensuring that the wall face is sufficiently flat.
Allow at least 7 weeks before tiling onto new concrete to ensure that it is fully dry.
Smooth concrete surfaces may require additional priming with webercol prime.
Allowance for movement
Flexible fraction joints of 5 mm minimum should be incorporated every 3m horizontally and every 5m vertically.
It is important to select an adhesive with the appropriate level of flexibility to accommodate for the expected strains from either differential thermal or moisture movement and/or deflection of the substrate under load.
• For façades, up to 6 m high, webercol flex, webercol max, webercol fast, webercol F1, webercol plus, can be used.
• Use webercol flex for heights up to 28 m
• Back-buttering method is mandatory to ensure full adhesion
• Press well the tiles using a rubber hammer to ensure full transfer of tile adhesive with the substrate and the tile.
It is recommended to have a minimum joint width of 4 mm around the tiles. Grouting should be done at least after 24 hours of fixing tiles, using weberjoint perfect or weberepox easy.
weberjoint perfect can be applied to a width of up to 20 mm.
weberepox easy can be applied with width of up to 10mm.
Remove excess adhesive from the joints to ensure full adhesion and filling of the gaps.
It is advisable to use a flexible adhesive and a high-performance grout with for external applications.