Wall insulation specifically refers to a class of insulation materials insulation board used in construction of the wall, according to the use position can be divided into: external insulation materials, insulation materials, high-quality interior wall insulation panels, roof insulation material; insulation material according to the internal components of separable as follows: inorganic insulation materials and organic insulation material. 1, the wall staggered arrangement is not strict; 2, with the primary plate surface area is less than effective bond insulation board diagram, reaching less than 40% compliant insulation board price, or imaginary sticking, or fail to meet the individual requirements of project design ; 3, plate and slab does not close or access Cha differences were large, poor or exterior parts tightness; 4, slab close to or flush with the window, does not meet the regulatory requirements; 5, the formation of the board is not up standard; 6, with a wet brush to surface irregularities of the old and the new leveling and hole edge brush flat. ,