Roof Sandwich Panels（屋面夹芯板） are sandwich panels specifically designed for roofing applications. They must resist weather loads (rain, snow, wind), thermal stresses, and provide adequate insulation and drainage.

Structure & Design Considerations

• The panel must have a watertight joint design, often with tongue-and-groove, interlock, or hidden fasteners, to prevent water ingress.

• The panels are fixed to purlins or roof structure through screws, clips, or concealed fasteners depending on whether a through-fastened or standing-seam-like system is used.

• The slope of the roof, snow/wind loads, span between supports, and thermal expansion must be carefully considered in structural design.

• The core thickness is often larger in roof panels (e.g. 80 mm, 100 mm, 120 mm or more) to achieve required thermal resistance (R-value).

Thermal & Insulation Performance
Roof sandwich panels typically aim for high R-values because roofs are major sources of heat gain or loss. Using PIR, PU, or mineral wool cores, the panels help reduce energy consumption and maintain indoor comfort.

Weather & Durability
Roof panels often incorporate weather seals, vapor barriers, and durable coatings (e.g. PVDF, polyester, fluorocarbon) to resist UV, corrosion, and aging. The outer skin must handle exposure to sun, rain, hail, and sometimes foot traffic.

Applications
Used in warehouses, manufacturing plants, cold storage buildings, sports halls, commercial complexes, agricultural buildings, etc. The roof panels often work in concert with side walls and internal insulation systems as part of a total building envelope.