The first is to pave another layer and wipe more cracking resistant mortar at the first floor or decorative window and door openings and crevices of buildings. As for common external wall thermal insulation mesh, its lap joint length shall not be less than 100 mm, if it is enhanced external wall thermal insulation mesh, then only butt joint is available, no lap joint . Secondly, at the internal and external corners, the width of external wall thermal insulation mesh on each side should not be less than 20 mm, and around the periphery of the door and window, the external wall thermal insulation mesh should tower above the wall about 100mm , and pave 400 mm * 30 mm external wall thermal insulation mesh at four corners along the angle of 45 degree. . The specification of commonly used external walls thermal insulation Mesh in construction has cesrtain rules. For example, the size of its net opening is 4 mm * 4 mm and its gram?weight is165 grams per square, the length of each roll is 50 meters, the width of each rll is 1 meter. Its main color is white, along with blue and green, etc. In addition, the otherexternal walls thermal insulation mesh can also be customized according to customer's demand.
Mesh is made of glass fiber as the main raw material, but also through multi-processing procedures. The interior wall mesh is an ideal material of grc wallboard. In general, the unit weight of interior wall thermal insulation mesh is lighter, usually about 50-60 grams, so its quality tensile resistance is relatively smaller. The weight of exterior wall thermal insulation mesh is generally 80-160 g, according to different building categories, the application of grams is not the same, It is better to apply it in external wall to resist tensile force .
There are many types of meshes, such as a fiberglass mesh, external wall thermal insulation mesh and alkali-resistant mesh, etc. The external wall thermal insulation mesh is the most commonly used, because the external wall thermal insulation is a very important part in construction, external wall thermal insulation mesh is also very crucial.
Article 4.0.6 A test for alkali resistant tensile breaking strength shall be in accordance with provisions A12.2 of this Regulation appendix, fiberglass mesh alkali-resistant tensile breaking strength and alkali-resistant tensile breaking strength retention rate should be in accordance with regulations in table 4.0 .6. Table 4.0.6 Glass fiber mesh performance requirements: test items: alkali tensile breaking strength N / 50mm; alkali tensile breaking strength retention % . warp-wise, weft, warp-wise,weft. performance requirements: fiberglass mesh ≥750≥50; alkali-resistant fiberglass mesh ≥1000≥75.
National technical standards of external wall thermal insulation mesh (JG): The fiberglass mesh warp-wise and weft alkali tensile strength shall not be less than 1250N / 50 mm, alkali tensile fracture strength retention rate shall not be less than 90%, the weight per square meter shall be equal or greater than160 grams. The JG fiberglass mesh warp-wise and weft alkali tensile strength shall not be less than 1250N / 50 mm, alkali tensile fracture strength retention rate shall not be less than 90%, the weight per square meter shall be equal or greater than160 grams. Breaking strength and alkali-resistant strength retention rate: It is generally known that breaking strength and alkali-resistant strength retention rate is an important property of fiberglass mesh. Breaking strength and glass fiber count or weight are bound together.
