Installing EPS cement sandwich wall panel on exterior walls is a systematic process that requires careful preparation, precise positioning and standardized joint treatment to achieve the best weatherproof and structural performance. Before starting any installation work, the construction team must first inspect the base wall or structural frame to make sure it is flat, clean and strong enough to bear the weight of the EPS cement sandwich wall panel. Any uneven areas on the base surface should be leveled with cement mortar, and all floating dust, oil stains and loose residues must be completely removed. The next step is to carry out on-site measurement and layout marking: use a professional laser level to snap the vertical and horizontal reference lines on the structural frame, mark the exact position of each panel, and pre-number all EPS cement sandwich wall panel units according to the installation sequence drawn in the construction drawing.

The formal installation of EPS cement sandwich wall panel starts from the corner of the building. First, place a special elastic cushion strip at the bottom of the installation position to buffer structural vibration and prevent hard contact between the panel and the foundation. Lift the first EPS cement sandwich wall panel into the marked position, adjust its verticality with a level ruler, and then fix it firmly to the embedded steel parts on the structural beam and column with high-strength self-tapping screws. After the first panel is secured, apply a layer of dedicated polymer mortar on the side tenon of the panel, then push the next EPS cement sandwich wall panel tightly against it to make the joint seamless. During the whole installation process, every 3 installed panels need to be checked again for verticality and flatness to avoid cumulative deviation that will affect the subsequent installation quality.

Once all EPS cement sandwich wall panel units are in place, the next critical stage is joint treatment and surface finishing. Fill all the gaps between panels and the gaps between panels and surrounding structural components with flexible anti-crack putty, then press a layer of alkali-resistant fiberglass mesh cloth into the wet putty to enhance the crack resistance of the joint area. After the putty is completely cured, you can proceed to the exterior surface decoration work, including applying base coat, rendering finish mortar, or sticking exterior wall tiles. When all steps are completed according to specifications, the EPS cement sandwich wall panel exterior wall system can withstand long-term wind, rain, temperature changes and ultraviolet radiation, maintaining stable performance for decades without major maintenance.