The better exterior wall insulation grid mesh adopts platinum fiberglass as the base material, with standard workmanship and good quality. No matter in the selection of materials and the weaving process, the coating emulsion used generally has good alkali resistance. Excellent alkali resistance and high warp and weft tensile resistance make the product have good hand feel and construction compliance, which can effectively reduce the amount of plastering mortar and save cost.
The poor quality external wall insulation fiberglass mesh is usually made of waste glass such as beer bottles. The market price is usually about 1 yuan -1.60 yuan. The production process is made of clay crucible, which is a national prohibited production process, and its exterior coating is also non alkali resistant emulsion. With the naked eye: the low-quality exterior wall insulation grid cloth is rough, mainly sold by the market. There are often problems such as lack of length, insufficient gram weight, breaking after folding twice, weak contact, easy displacement, and easy to stab the skin. Such grid cloth used in the insulation layer will generally lose its strength after two years. At this time, if the mortar is knocked off and the grid cloth is taken out, as long as it is gently rolled, the fiberglass yarn will become powder.
Another kind of inferior exterior wall insulation grid cloth is called mixed silk yarn, which is a kind of imitation better fiberglass. Another kind is called imitation platinum fiberglass mesh. In the selection of waste glass, it usually selects some flat broken glass with good transparency, and the fiber diameter is relatively thin. It is sometimes difficult to judge its authenticity from its appearance, but its quality can not meet the requirements of real alkali resistant mesh in external insulation of exterior wall in any case. Therefore, when buying mesh cloth, we must buy real platinum brushed fiberglass mesh with high strength and high alkali resistance.
