Construction method of outer wall external thermal insulation key joint

Abstract

The invention discloses a construction method of an outer wall external thermal insulation key joint. The outer wall external thermal insulation key joint comprises a plinth, a door window, a balcony, a deformation joint, a roof parapet wall, an externally-hung decoration part, a fireproof isolation belt and an outer wall corner. A door and window joint comprises a door and window opening, a side opening, a window lower opening and a window upper opening. A deformation joint comprises an expansion joint flush joint, a corner joint, an anti-seismic settlement joint flush joint, a corner joint, a vertical joint and a horizontal joint. Seam joints of all thermal insulation key joints are caulked through thermal insulation materials and then plugged through sealant, gridding cloth is additionally arranged at the ends of thermal insulation plates of the key joints for reinforcement, a drainage slope is arranged on the structure to prevent water stored on the thermal insulation materials from being damaged, and dripping water is arranged for rainwater diversion to prevent the thermal insulation plates from being damaged. The problems of damage, cracking, hollowing and the like of insulation boards at key joints of a part of outer wall external insulation systems in severe cold areas are effectively solved.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for a key node of external wall thermal insulation. Background technique [0002] With the development of society, ecological environment protection and greenhouse effect reduction have become major issues for human survival and development. According to the needs of energy conservation and emission reduction, the state puts forward mandatory requirements for building thermal insulation performance. As the main form of external wall insulation in severe cold areas, the external wall insulation system has many quality problems, and with the large number of external wall insulation buildings put into use, a series of common quality problems have formed, including: cracks in the external wall insulation system , Hollowing and peeling off of the external thermal insulation system of the external wall, frost and condensation on the internal wall in ...

AI Technical Summary

Problems solved by technology

After the external thermal insulation system of the external wall is cracked, it will not only affect the energy-saving and thermal insulation effect of the external thermal insulation system, but also affect the service life of the building and the appearance of the external wall

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