Insulated Glass Recommendations
Glazing choice plays a critical role in determining the performance of your greenhouse, and the selection is both location and design specific. Solar Innovations, Inc.’s greenhouse experts will work with you to determine your best options.
U-values indicate the amount of heat transferred through glass. Lower values indicate the glass acts as a better insulator, which creates a more consistent temperature. Typical glass ranges start around 6.0 for a single pane of glass and reach values around 0.13 for insulated glass with LowE coatings, Stainless Steel spacers, and argon infill. LowE coatings allow the sun’s rays to pass through the glass while reducing the amount of heat transfer.
This glass type is used when the greenhouse needs to be shaded from intense direct sunlight. A coating is applied to clear glass, which blocks the sun and causes a soft blue tint.
“LowE” 340 insulated glass has a U-value of 0.25, an R-value of 4.0, a visible light transmittance of 39%, and a solar heat gain coefficient of 0.18.
“LowE” 272 has a very slight green tint and this coating assists in regulating temperatures in the greenhouse, keeping it cooler in the summer and warmer in the winter. This is the most commonly used LowE glass for greenhouses. The insulated double pane version has a U-value of 0.25, an R-value of 4, a visible light transmittance of 72%, and a solar heat gain coefficient of 0.41.
The best insulation values of LowE glass choices comes from 366. It will help retain the greenhouse’s heat in the winter and block the heat from entry in the summer. “LowE” 366 blocks 95% of the sun’s harmful UV rays, which will help preserve the color and composition of furnishings, draperies, and wall treatments. This insulated double pane product has a U-value of 0.24, an R-value of 4.13, a visible light transmittance of 65%, and a solar heat gain coefficient of 0.27.