Low-energy consumption and energy-saving reconstruction method for existing building

Abstract

The invention discloses a low-energy consumption and energy-saving reconstruction method for an existing building. The method includes the following steps: step 1. cleaning an external wall and a roofof the existing building, completely removing coating materials and face bricks of the external wall, completely removing the part above a roof heat preservation layer, and performing plastering treatment on the external wall; step 2. adopting, by the roof, an inverted double-layer dry-laid extruded polystyrene board for low energy consumption reconstruction; step 3. replacing doors and windows;step 4. performing energy-saving reconstruction of the outer wall, and using staggered joints to paste a double-layer graphite polystyrene board for energy-saving reconstruction of the outer wall; step 5. performing the construction of external wall coating materials of the building. Through energy-saving reconstruction of the external wall, roof and the doors and the windows of the existing building, the technical problems of poor heat preservation performance, high heat consumption, large energy consumption and poor living comfort in old residential areas are solved.

Description

technical field [0001] The invention relates to the technical field of building energy-saving renovation, in particular to a method for low-energy energy-saving energy-saving renovation of existing buildings. Background technique [0002] In recent years, with the acceleration of my country's urbanization process, the number and scale of cities and towns have continued to increase, and the construction industry has become an industry that consumes a lot of energy. Building energy consumption accounts for one-third of the total terminal energy consumption of the whole society. At present, there is a huge amount of existing buildings in my country, with a construction area of ​​more than 50 billion m 2 , of which energy-efficient buildings account for only about 15%. Under the guidance of a series of energy-saving policies, regulations, standards and mandatory provisions, my country's building energy-saving level has been continuously improved, but it is still far lower than ...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a low-energy energy-saving renovation method for existing buildings. By performing energy-saving renovations on the exterior walls, roofs, and doors and windows of existing buildings, it can solve the problem of poor thermal insulation performance and high heat consumption in old residential areas. Technical problems such as large energy consumption and poor living comfort

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