accumulation of moisture

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In addition, tile adhesives, plastering mortar (cement-based) mesh base points for damage is also very strong in the combination of a long accumulation of moisture. Airtight tiles not only prevents the dried material, and prevents the absorption of CO2 from the air, so that can not quickly wipe mortar hydration, leaving the mesh base in harmful environment longer. Gradually make mesh no plastic window boxes vresidual strength, so that after anchoring the anchor mesh no longer have wind pressure safety. Of course, high-elastic paint and other impermeable outer insulation system finishes this situation exists. Surface cracking problem.

And pasted on a rigid wall tiles, like cracking tile exterior insulation and finish systems occurs mainly in Zhuanfeng place, but the possibility of cracking is much larger than the former, because the temperature and humidity of the tensile stress is greater than the former system. Measures to address security issues to choose the right exterior insulation system of fixation. For exterior insulation system for paint finishes layer, 10 kg / m2 of weight is not necessary to consider shear system each material layer. As long as the group has sufficient adhesive strength to paste manner sufficient to meet the security system. For tile exterior insulation finish system, you must use a combination of stick nail.

At the same time, because the protective surface layer and the bonding state between the polystyrene board is also affected by heavy tile, the anchor must be anchored in the back reinforcing mesh layers. Set expansion joints. According to tests, the length of 5m of wall insulation, tile temperature difference of 40 ℃, the wall edge shift value (positive angle) at up to 0.5mm, and displacement caused by humidity also has 0.1mm. In actual use, summer and winter extreme temperature tiles up to 80 ℃, and the temperature and humidity is a composite, alternately, periodically acting on the tile, whether covered porches made with composite materials it is considering the protective surface layer and the shear stress between the tiles or consider tile (Zhuanfeng) cracking problem, the system must be set joints. And joints using exterior insulation and finish layer system is calculated on the basis of different, tile finishes EIFS expansion joints and flexible long distance, broadband Zhuanfeng tile grouts, and tile size related.