There are two kinds of exterior wall insulation grid cloth, one is glass fiber mesh and one is steel wire mesh.
Glass fiber mesh
Fiberglass mesh is woven from glass fiber and then coated with plastic, fiberglass mesh is divided into two kinds of medium alkali and alkali-resistant, medium alkali is generally used for paint finish insulation, generally 160 g/㎡; alkali-resistant is generally used for tile finish, generally 290 g/㎡ or more, alkali-resistant mesh cloth must contain zirconium dioxide and titanium dioxide to be alkali-resistant.
Steel wire mesh
Steel wire mesh is used for exterior wall insulation in the main intention is to paste tile, in fact, the alkali resistance of steel wire mesh has not been tested in practice, steel wire mesh is divided into, hot dip galvanized mesh and cold galvanized mesh, etc.. After hot-dip galvanized wire mesh is the one used in exterior wall insulation, that is to say, first welded and then hot-dip galvanized, hot-dip galvanized is the net into the molten zinc liquid galvanized. This kind is the most resistant to alkali. There is also a limit of new and then welded, so that the welded joints are easy to rust not alkali resistant. Cold galvanized nets cannot be used in exterior wall insulation. Nowadays, some jerry-builders use cold galvanized nets, which are galvanized by chemical replacement reaction. This kind of net is the least alkali resistant.
The temperature range of fiberglass alkali-resistant mesh
According to the composition, glass fiber is divided into many kinds, such as: high alkali / medium alkali / alkali-free / quartz / high silica oxygen glass fiber. The temperature resistance of different varieties varies greatly. For example, ordinary medium/non-alkali glass fiber, at 500 - 600 degrees Celsius, although still maintain the fiber form, but its strength loss has been great; while quartz/high silica glass fiber, at 1000 degrees Celsius, still maintain its physical and chemical properties.
