The first category is product standards. At present, the expansion polystyrene board external wall insulation board system has been completed. This system now accounts for more than 62% in our country, and some statistics are 80%. Because this statistic is not accurate, it is the most mature external insulation system with the highest market share anyway.
The second category is engineering construction industry standards and technical specifications for external wall insulation engineering. JGJ 144 mainly includes five kinds of insulation systems:
The first is EPS board thin plastering external wall insulation system;
The second is the external insulation system with rubber powder EPS particle insulation slurry for the external wall;
Third, EPS board cast-in-place concrete external insulation system;
The fourth is the cast-in-place system with grid;
Fifth, the mechanical fixing of EPS steel wire mesh external insulation system.
There are product standards and related engineering construction industry standards supporting the existing external wall insulation. The main supporting product standards are polymer-based glass fiber mesh for external wall insulation; Code for acceptance of construction quality of wall energy-saving projects is also called GB504 1 1. Most of these standards were compiled in 2003-2007, but due to the rapid development of external wall insulation technology in recent years, the service life of these standards is relatively short, and they are basically being revised. According to the development of technology, many standards are being approved by the Ministry of Construction and are being formulated. The standard being revised is JG 149, and the revision of JG 149 is being submitted for review. JG 158 has just finished the mobilization meeting, and it is also ready to be revised.