Construction Methods for Prefabricated Panel Roofs

The construction methods for prefabricated panel roofs mainly include laying prefabricated panels, waterproofing treatment, thermal insulation, and other steps, while also paying attention to safety, quality control, maintenance, and other matters.

I. Laying Prefabricated Panels
Select appropriate prefabricated panels according to design requirements and roof dimensions. Before laying, check their quality to ensure there are no damages or cracks. The base layer should be flat, and the top of the wall should be leveled with high-grade cement mortar to ensure full contact between the panels and the wall. When laying, ensure uniform gaps between the prefabricated panels, secure connections, set up temporary supports at the bottom of the panels, and fill the panel gaps with grout in three stages, compacting them with a brick trowel to prevent deformation and water leakage.

II. Waterproofing Treatment
After laying the prefabricated panels, proceed with the construction of the waterproof layer. Materials such as waterproof coatings or waterproof membranes can be selected. Before construction, ensure that the surface of the prefabricated panels is dry, clean, and free of oil or impurities. During construction, follow the product instructions to ensure that the thickness and coverage area of the waterproof layer meet the requirements. Key areas such as pipe openings, drainage outlets, corners of the parapet wall, and between prefabricated panels should be brushed twice with elastic K11 and then covered with 2 centimeters of waterproof mortar. The separation joints should be treated with sealing materials.

III. Thermal Insulation
Lay thermal insulation materials such as polystyrene boards or rock wool boards above the waterproof layer according to design requirements. The selection of materials should take into account local climate conditions and building usage needs. When laying, ensure that the materials are tightly fitted without gaps to improve thermal insulation performance.

IV. Precautions

1. Safety: During construction, strictly adhere to safety operating procedures to ensure the personal safety of construction personnel.
2. Quality Control: Strictly control the quality of materials and construction to ensure the stability and durability of the roof structure.
3. Maintenance: After construction, regularly inspect and maintain the roof to promptly identify and address potential issues, extending its service life.
4. Roof Drainage: The roof drainage slope should be greater than 2%, and smooth drainage channels should be set up to avoid water accumulation and leakage.