Insulation Values & Light Transmission
Understanding Insulation and Light Transmission in Polycarbonate Sheets
Choosing the right multi-wall polycarbonate sheet for your project means finding the right balance between insulation and light transmission. The thickness, cell structure, and color of a sheet all play a role in how well it retains heat (measured by R-value) and how much natural light it allows through (Light Transmission out of 100%).
The following table breaks down the insulation and light transmission properties of different polycarbonate sheet options, helping you select the best fit for your greenhouse, pergola, patio cover, or building project. Whether you need maximum clarity for plant growth or superior insulation for energy efficiency, you’ll find the key details here.
| Light Transmission | R-Value | |
|---|---|---|
| 6mm TwinWall | ||
| Clear | 80% | 1.6 |
| Opal | 57% | 1.6 |
| Bronze | 42% | 1.6 |
| 8mm TwinWall | ||
| Clear | 81% | 1.7 |
| PoliSoft Diffused | 79% | 1.7 |
| Bronze | 42% | 1.7 |
| 10mm TwinWall | ||
| Clear | 82% | 1.9 |
| Opal | 57% | 1.9 |
| Bronze | 42% | 1.9 |
| 10mm TripleWall | ||
| Clear | 74% | 2.1 |
| 16mm TripleWall | ||
| Clear | 74% | 2.5 |
| Opal | 52% | 2.5 |
| Bronze | 40% | 2.5 |
| 16mm 5X-Wall | ||
| Clear | 64% | 2.78 |
| Opal | 40% | 2.78 |
| Bronze | 30% | 2.78 |
| 25mm TripleWall | ||
| Clear | 72% | 2.941 |
| Opal | 35% | 2.941 |
Ready to get started on your project?
We have a wide range of polycarbonate sheets to help you build something great.