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R-Value and Technical Data
A materials R-value is the measure of its resistance to heat flow. The way it works is simple: the higher the R-value,
the more the material insulates. For comparison, concrete has a R-value of 0.30 and fiberboard has a R-value of 2.78.
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| R-Value Single Glazing |
N/A |
3.7 |
2.4 |
| R-Value Dual Pane |
N/A |
4.6 |
3.4 |
| Light Transmission, UV |
.01% |
1% |
1% |
| Light Transmission, Visible |
3% |
11% |
15% |
| Shading Coefficient |
0.35 |
0.38 |
0.44 |
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| R-Value Winter Double Glazing |
5.00 |
| R-Value Summer Double Glazing |
4.35 |
| Light Transmission UV |
1% |
| Sound Absorption |
0.40 |
| Shading Coefficient Double Glazing |
0.36 |
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