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Nowadays, extruded boards are used in the building insulation industry, but what do we need to pay attention to when using extruded boards in exterior wall insulation?
1. The extruded board must ensure that the aging under natural environmental conditions meets the requirements of 42 days. If the construction period is tight, the standby measures of aging for 5 days under steam curing conditions of 60 °C should be adopted. In order to avoid the lack of aging period of the extruded board, the upper wall will continue to shrink, resulting in cracking, warping and deformation of the crack-resistant protective layer and the decorative surface layer.
2. When the extruded board is pasted, the flatness adjustment should be carried out by means of a rubber hammer. It should not be adjusted by means of up and down or left and right shifting, so as to prevent the adhesive from spilling into the gap between the plates due to the displacement of the extruded board. The formation of a cold bridge will have a greater negative impact on the insulation effect of the external insulation system.
3. When the extruded board is pasted, in order to ensure the verticality of the male corner, when constructing at the corner, the extruded board should be properly placed beyond the wall to a certain distance. After the extruded board is completely attached, the uniform bomb is applied. Cut after the line and smooth it.
4. After the surface of the extruded board is polished, the flatness should be controlled within 3mm/2m. The protective surface layer and the facing layer should not be used to compensate for the unevenness of the insulation board, so as to prevent the crack-resistant protective layer mortar from being too thick and cracked. Hidden dangers.
5, the temperature is lower than 5 ° C or higher than 38 ° C is not suitable for construction, rainy days or 5 winds above the construction is not suitable