The PU Metal Roof Deck consists of 3 layers : a pre-painted steel sheet, rigid polyurethane (PU) foam and another layer of steel sheet laminated onto the PU foam layer. The PU foam provides very effective heat insulation and sound absorption. The external steel sheet layer provides extra protection for the PU foam, allowing it to withstand damage during transportation and construction.PU metal decks are widely used in the construction of roofs and walls of factories, warehouses, freezing storages, workshops, poultry farms, supermarkets, exhibition halls, gymnasiums, schools, dormitories, mobile homes, residential houses and many other non-industrail facilities.
| PUR/PIR Sandwich Panel Technology Data | |
| Density | 40-45kg/m3 |
| Thermal conductivity | 0.019-0.023W/M.K |
| Moisture permeability coefficient | ≤3.34Ng/Pa/m.s |
| Water absorption | ≤0.5g/100cm2 |
| Enclosed rate | ≥97% |
| The compression strength | ≥220KPa |
| The bending strength | ≥2450KN/m2 |
| Oxygen index | ≥28 |
| Fire proof | B1 |
| Dimensional stability | ≤1% |
| Application temperature | -50ºC-150ºC |
| Exterior Steel thickness | 0.4-0.7mm |
| Interior steel thickness | 0.4-0.7mm |
| Core material thickness | 40/50/60/75/100/120/150/200mm |
| Length | Less than 11.8m |
| Effective width | Wall panel:400-1120mm;Roof panel:1000mm |
| Grace finish | Embossment,small wave,big rib,flat finish |
| USAGE | Roof and Wall |
| Advantage | Heat Insulation, light weight, quick installation,waterproof, fireproof, soundproof, energy-saving,environmental friendly |
The rigid polyurethane foam core provides excellent thermal insulation for buildings.
This comes from the excellent thermal conductivity coefficient, λ = 0.022, unparalleled by any mineral wool or EPS sandwich panel. The concealed fasteners mean just that: the joints between the panels are hidden from sight, which improves the aesthetic value of the result.
Besides the superb solidity and durability with a beautiful appearance, the hard polyurethane resin foam used for panels performs quite well in heat insulation.
Globally, about half the energy used in the life of a building is for heating and cooling, so effective insulation is a major priority.Compared to other building materials, polyurethane insulation has the highest thermal resistance(R-values) at a given thickness and lowest thermal conductivity.
Use of polyurethane insulation products in residential and commercial buildings helps meet advanced energy codes, contributes toward green building certifications and provides comfort to the building occupants.