Heat insulated metal roofing and cladding sheets

NOISE REDUCTION

Condensation Effect Reduction

Heat insulated metal roofing and cladding sheets

EXCELLENT walkability

Thermal bridge elimination
It is important in metal structures to isolate the roof sheet from the underlying metal structure. By using METAhybrid® Heat insulated metal roofing and cladding sheets with its protective layer covering the roof sheet at the intrados, the head load that bears on the surface of the roof sheet is reduced by about 25% and attenuates heat bridges noticeably, constituting a barrier to heat dispersion. This phenomenon happens when in the presence of electrolytic solutions, two different metals are in contact with each other and a “potential” difference occurs between them.
The conduct of the two metals is that of a battery with one metal acting as an anode and the other as a cathode which, over time, leads to a more or less pronounced dissolution of the anodic part. This type of corrosion is known by the name of “galvanic corrosion”. Any kind of contact between the sheet and the underlying structure can be avoided by applying a Galvanic couples elimination

Thermal mass and Conduction
Product Specification
NOTE :-
Top Metal Sheets Are Available In Following Options
1) Colour coated galvanise
2) Galvalume
3) Colour Coated Galvalume
No. | Characteristic | Test Result | Method |
1 | Density | 30-40 Kg/m3 | ISO 845 1988 (E) |
2 | Reflectivity | 0.97 | ASTM E408 |
3 | Emissivity Aluminium Foil | 0.03 | ASTM C1371 |
4 | UV Resistance | Excellent | — |
5 | Chemical Resistance | Excellent with AI Foil | ASTM D-543/BS 4618 |
6 | Temperature Range | -80 C to + 90 C | — |
7 | Flexibility | Excellent | BS4433 |
8 | Heat Resistance (R-Value) | 3.0m3 C/W | ASTM C236 |
9 | Thermal Conductivity | 0.030 Kcal/m3 | ASTM C-177 |
10 | Water absorption | <2% | ASTM D 1056 -98 |
11 | Flammability | HF-1 | UL-94 |
12 | Water Vapour permeance (28 days) | <6×103 ng
| ASTM E-96 |
13 | Tensile Strength (N/m2) | Min 25 | BS 4370 Part 2 |
14 | Dimension Stability | No Visible Changes observed | BS 4370 Part 1
|
15 | Fire characteristic | a) Surface spread of flame Class 1 | BS 476 Part 7 |
|
| b) Fire Propagation Class 0 | BS 476 Part 6 |
|
| (For both plain and foil faced material) |
|
16 | Colour | Grey |
|
Note:- Please refer the above data for guidance purpose only and may contact geometric steels office for further information .