Container House Roofing Materials

Common roofing materials for container houses include sandwich panels, metal panels, fiberglass-reinforced plastic (FRP) panels, and corrugated panels, with differences in performance, applicable scenarios, and costs.

Sandwich Panels

Sandwich panels are one of the most commonly used roofing materials for container houses. They are composite panels consisting of two metal face sheets (such as galvanized steel sheets or aluminum alloy sheets) with an insulating core material (such as rock wool, polyurethane, or glass wool) in between. Rock wool sandwich panels offer excellent fire resistance (Class A non-combustible) and sound insulation, making them suitable for scenarios with high fire safety requirements. Polyurethane sandwich panels have a low thermal conductivity (approximately 0.02-0.03 W/(m·K)), providing outstanding thermal insulation, ideal for cold regions. Glass wool sandwich panels combine fire resistance with sound absorption properties and are relatively cost-effective. Sandwich panels are installed using mechanical fastening or concealed clip connections, and attention should be paid to sealing the joints to prevent rainwater leakage.

Metal Panels

Metal panel roofs (such as galvanized steel sheets or aluminum alloy sheets) are characterized by their lightweight, high strength, and corrosion resistance, often used in temporary buildings or cost-sensitive projects. Galvanized steel sheets can be coated with high-weather-resistant polyester resins or fluorocarbon coatings to enhance UV resistance and extend service life. Aluminum alloy sheets are coated with fluorocarbon to form a protective layer, offering superior weather resistance and requiring no additional corrosion protection. Metal panel roofs should be paired with waterproof underlayment or self-adhesive waterproof membranes to prevent condensation buildup and rusting.

Fiberglass-Reinforced Plastic (FRP) Panels

FRP panels are made of glass fiber-reinforced polyester resin as the base material, offering lightweight, high strength, corrosion resistance, and adjustable light transmittance. Transparent FRP skylight panels can be used for partial roof lighting, reducing daytime lighting energy consumption. Opaque FRP panels are enhanced with flame retardants to improve fire ratings, suitable for corrosive environments such as chemical plants and coastal areas. FRP panels should be installed using dedicated sealing strips to ensure joint waterproofing.

Corrugated Panels

Corrugated panels enhance stiffness through their wavy structure, dispersing external forces and reducing deformation risks. Color-coated aluminum corrugated panels are made of aluminum alloy as the base material, with a colored coating on the surface, offering both rust resistance and decorative appeal, often used in creative space renovations. Galvanized steel corrugated panels are more cost-effective but require regular maintenance to prevent rusting. Corrugated panel roofs should be paired with waterproof membranes or coatings to form a dual waterproofing barrier.