Hidden screw roof panel features:
1. The screw is hidden and has excellent waterproof performance, which prevents the screw from corrosion and prolongs the service life of the panel.
2. Two wave crest design improves the bearing capacity of roof panel, reduces the use of roof purlin, enhances the loading capacity, and has the function of balancing water flow.
3. It is designed to be away from the water tank to prevent water seepage.
4. Airtight and sound proof, which can reduce the impact sound of rain, hail, etc

Panel thickness	50mm - 250mm
Length	According to customer’s requirement
Up sheet material	0.4-0.8mm galvanized color steel sheet
Down sheet material	0.4-0.8mm galvanized color steel sheet
Core material	PUR/PIR foam
Panel width	600-1000mm
Orientation	Horizontal
Heat conductivity	≤0.024
Fireproof rating	B1
Compressive strength	0.14Mpa