The plastering of the window hole i

The plastering of the window hole is best done by the unit of the outer powder. Before installing size frame hole deal with reservation for report rough scraping treated with waterproof mortar followed by a solid window frame; A3 wing galvanized steel fastener will be connected and fixed, connecting element thickness of not less than 1.5 mm, from the corners of the The distance is not greater than 180 mm and the distance between the connectors is not greater than 500 mm. When fastening according to different hole materials, the prescribed fastening method is used to ensure that the fastening is firm and reliable. Wing and through hole, depending on the type of material addition points; 3 ~ 5 mm gap between the window frame and the wall of the solid, non-corrosive must be left within the gap, the elastic element should be used to prevent full caulking material or cracks. The surface is sealed with sealing paste to ensure water and air tightness.