How to deal with crack Drywall Tape

Fiber Glass is a reinforcing material for exterior wall insulation surface layer. The main function of Drywall Tape is to improve the mechanical strength of the surface layer, resist continuity of the facing layer, disperse the shrinkage pressure and insulation stress of the surface layer, and avoid stress concentration. Resist surface cracking caused by natural temperature and humidity changes and accidental impact.

When we are laying the Fiber Glass, tighten the Drywall Tape and attach it to the bottom covering mortar. Use a trowel to press the Drywall Tape into the surface of the mortar from the middle to the surroundings. It must be flat and compacted. No Drywall Tape is allowed. wrinkles. If there are cracks, how to deal with the Drywall Tape?
Expansion joints and decorative joints can be provided for external wall insulation. Corresponding treatment should also be done at structural settlement joints and temperature joints. When expansion joints are left, the dividing strips should be put in during the plastering process and removed after the mortar has initially set, and the seam edges should be trimmed.
The seams are filled with foamed polyethylene round rods as backing, with a diameter or width of 1.3 times the seam width, and then the building sealant is filled in twice, with a depth of 50% to 70% of the seam width. The settlement joints and temperature joints are provided with metal covers according to the width and position of the joints, and are fastened with nails or screws. Decorative joints should be processed into concave or convex shapes according to the architectural design facade effect.
The convex shape is called a decorative line, which is best represented by polystyrene board, where the Fiber Glass and plastering mortar are not disconnected. When pasting polystyrene board, first stretch the thread to mark the position of the decorative line, and then stick the processed polystyrene board line at the corresponding position. When the lines protrude from the wall by more than 100mm, mechanical fixings need to be added. The surface of the lines is treated according to ordinary external insulation plastering practices.
Drywall Tape has very obvious advantages, and it is also very light in weight, making it easier and more convenient not only to transport but also to construct.