With an U-Factor of .50 (compared to 8mm twin-wall's U-factor of .62), ThermaGlas is 14% more energy efficient than standard 8mm twin-wall. But because it's a heaver panel it also costs more. So if you have to pay more for 8mm triple-wall, how quickly will you recoup the added cost (shown on tables below as "ThermaGlas Price Preimium") and what kind of return on investment can you expect after that (shown on tables below as "Anual Return on Investment")? The results are profound.

The data shown below presents both the cost and the economic benefit of ThermaGlas compared to double-wall glazings. Three different size greenhouse ranges are used as examples (click here for a custom PayBack & R.O.I. analysis using your own greenhouse specifications). In order to cover a fairly wide spectrum of heat loss experience, three typical heat loss costs using double-wall coverings are assumed for each of the three ranges (acrylic and polycarbonate sheet and double poly film all have similar heat loss coefficients). If your heat loss cost experience varies from those shown, simply interpolate your heating cost to arrive at your Payback Period and Return on Investment.

Again, the starting point is the fact that ThermaGlas has an R-Factor of 1.99 compared with a Factor of 1.72 for double-wall materials. This R-Factor differential corresponds directly to a heat loss reduction factor of 14%, the factor which is utilized in the Table.

The Payback Period is the length of time it will take for your heating cost savings to pay for the slightly higher cost of ThermaGlas. After that period, you will be experiencing the annual Return on Investment indicated in the last column (Note: ROI does not include compounded interest or profit gain).

Example #1:

Example #2:

Example #3:

Request a Custom Payback and R.O.I. Analysis Using Your Own Specifications
If you would like Palram to estimate the payback period and return on investment for your specific application, feel free to email us with the following info:

1. Number of houses (i.e., "1 range of 3 gutter-connected houses")
2. Width of houses (from gutter to gutter or eave to eave)
3. Length of houses (from end to end)
4. Gutter or eave height
5. What areas would you like to cover with 8mm triple-wall? (i.e., roof, sides, ends, entire structure)
6. Your name, company name, address and phone number.

Send the answers to those questions to us via email at info@palramhort.com.