Tagged: UV transmission

Amazing Sunglo Greenhouse

O’Malley and Jon Stoumen have a most amazing Sunglo greenhouse and urban garden. Every square foot of their property provides either a habitat for native species or what I imagine is quite a fresh bounty of naturally grown food. They recently participated in a tour of local gardens and were kind enough to send us these pictures. I was at a loss for words when looking at them, but beautiful and inspiring certainly come to mind.

Thank you.

Micheal,

We LOVE our sunglo greenhouse!  We have a big vegetable garden and I started all the seeds in January under a grow light.  Most of the stuff is planted out now so I am rooting sedum cuttings for a future green roof project.  It fits in nicely next to our chicken coop and I am amazed how much time I spend in there. We are on a huge garden tour in the spring, April 26 & 27.  It is the biggest one in Palo Alto and it will last for two days.  The tour is the Gamble Garden tour and there will be a lot of people looking at our beautiful greenhouse. Thanks again for such a wonderful product.  

O’Malley & Jon Stoumen

Buying a Greenhouse?

If you are thinking about buying a greenhouse this season there are a few things you may want to consider. Many options are available to the backyard horticulturist these days, but in addition to their price tag there are many things that set them apart.

Perhaps one of the most important things to consider is strength and longevity. When investing such a large sum of money you want to be certain that the greenhouse will be something you can enjoy for many years to come. Things such as snow and wind load, life expectancy of the glazing material, and manufacturer’s warranty all play an important role in this.

sunglo snowloadIn mild climates where snow fall and wind speeds are low, a weaker and often cheaper greenhouse may suffice. But in harsher climates where the snow accumulates and the winds blow, one bad storm could leave you suddenly out of a greenhouse and all the money you paid for it. A greenhouse company that does not state their wind and snow load ratings probably does not want you to know what they are. Over the past 35 years Sunglo greenhouses have survived everything from the snowfall of Alaska to the hurricanes of Florida, and we have structural engineering reports to back our claims of an 80 mph wind load and 34 pounds per square foot snow load. Most recently we had one survive Hurricane Sandy, and you can read more about that here: Hurricane Sandy Survivor.

The life expectancy of the glazing material a greenhouse manufacturer uses also determines how long you can expect to enjoy your greenhouse. In most cases the warranty covering the greenhouse is a good indicator of this, but not always. The 12 year warranty included with every Sunglo greenhouse guarantees that your glazing material will sunglo greenhouse glazingbe “free from problems caused by the effects of sunlight for twelve years.” Sunglo uses only the highest quality UV stabilized, impact resistant acrylic, and we find that most customers enjoy at least 15 to 20 years without having to replace a single acrylic panel. Being able to replace individual panels is also unheard of in the backyard greenhouse market. More often than not your typical backyard greenhouse will require complete replacement in 10 years or less, but we see no reason to scrap a perfectly good aluminum frame that lasts a lifetime. The ease with which you can replace the individual panels is all because of our patented Therma-Truss system, and for more information about this and the differences between acrylic and polycarbonate please read : Acrylic vs. Polycarbonate.

Another thing to consider is energy efficiency. Our dual pane greenhouse panels are 1.5 inches thick. This equates to 38.1 millimeters. In comparison, your standard backyard greenhouse will be dual pane, but the the panels range in thickness from 6 to 8 millimeters. The thickness of the panel is important because the space between the panes creates insulating dead air space. Second only to a complete vacuum, dead air space is one of the best insulators known to man. If you intend to use your greenhouse all year round, as a Sunglo is designed to do, then spending a little more initially can save you a great deal of money in the years to come. For more information about another way your greenhouse can help you save money please read: Overwintering in the Greenhouse.

american greenhouseIn addition to the unmatched value of a Sunglo, you and every other American you know benefits from buying American. Sunglo greenhouses are one of very few still made entirely in these United States of America. Almost every other greenhouse on the market is an import from countries such as Germany and China. Not only does your purchase of a Sunglo greenhouse help to bolster our economy, but you get the benefit of support from actual people who enjoy aiding our fellow horticulturists. Starting with the initial assembly and continuing throughout the many years you will own your greenhouse, we will be here to help in any way we can.

If we haven’t convinced you that Sunglo Greenhouses are the strongest, longest lasting, and most energy efficient greenhouses under the sun please call us toll free at 1-800-647-0606. Most of our staff are proud Sunglo owners themselves and would be more than happy to answer all of your questions.

Sunglo greenhouse

Greenhouse Light Transmission

Greenhouse Light Transmission: Acrylic vs. Polycarbonate

sunglo greenhouseThe first part of our Blast from the Past video series is available today.

sunglo greenhouseThis week features a video comparing the light transmission of our acrylic glazing material to polycarbonate.

Click here to watch the video on Youtube.

Though the videos date themselves, the tests conducted in them are perhaps more relevant today than when they were originally filmed.

Our dual pane Therma-Truss® construction uses UV stabilized; impact resistant DR acrylic which resists discoloration and deterioration for up to 20 years. It incorporates a smooth outer layer and corrugated inner layer as shown in the diagram at right. Light is diffused evenly throughout the greenhouse by the corrugations while still allowing 92% of solar radiation to pass through.

This design is what started it all 35 years ago, and is what truly sets a Sunglo apart from all the rest today. In an industry overrun with flimsy, snap together polycarbonate greenhouses, you can take solace in knowing that somebody still considers American made quality to be more important than outsourcing overseas to improve the bottom line.

Good Morning Utah

Good Morning UtahLast year at the Salt Lake Tribune Home and Garden Festival we did a live news segment with Good Morning Utah. Big Buddha, a local TV personality with Fox 13 News, challenged us to prove the strength of our greenhouses. Luckily for him we don’t produce the flimsy, collapse during the first storm type of greenhouse. We manufacture the maybe some crazy guy will want to crawl up on top of it type of greenhouse, but you don’t have to take our word for it. You can see the segment for yourself at the link below.

Big Buddha on a Sunglo on Youtube

Just like the one featured in the video, all of our greenhouses are designed to withstand thousands of pounds of snow, over 80 mile an hour winds, or in this case, a very large man. I am sorry to report that we will not be able to make it to the festival this year, but if you had intended to check us out there please contact us about honoring the exclusive deal we offered at the show last year.

2012 Puyallup Fair September 7 – 23

Puyallup Fair LogoThe Alaska State Fair was so great we have decided to do it again! This time a little closer to home at the Puyallup Fair from September 7 – 23. We will be there with a fully constructed and outfitted greenhouse. For everyone who has been waiting for an opportunity to spend some time in one of our greenhouses and have all your questions answered this is your chance. The weather is supposed to be beautiful and there truly is no fair like the Puyallup. We will have an exclusive deal going on for the fair and our fully accessorized demo model will be sold at a deep discount.

So come on down and do the Puyallup!

 

Building Your Greenhouse

 

 greenhouse contstruction

http://youtu.be/e50sLNdaRiU

Early American Greenhouse History

GREENHOUSE HISTORY

 

 

We found in Google Books a scan of an interesting book from 1896, Greenhouse construction:  a complete manuaIllustration of the effect of greenhouse glass angles on sunglightl on the building, heating, ventilating and arrangement of greenhouses by Levi Rawson Taft, a professor of horticulture at Michigan Agricultural College.  Below is an excerpt from the book on greenhouse history.  While the information is dated, the book contains some interesting information and diagrams such as this illustration of the effect of glass at different angles.  From Chapter 1, Greenhouse Construction, History of Greenhouses:

It is known that the old Romans were able to secure fresh fruits and vegetables, for their banquets, the year round by both retarding and accelerating their growth. As an indication of their skill, it is said that they even forced the cucumber. They possessed no elaborate structures for this purpose, but grew them in pits covered with large slabs of talc. Heat was obtained from decomposing manure, and by means of hot air flues. They are believed to have had peach and grape houses, and it is claimed by some, that hot water in bronze pipes was used to warm them.

In modem times the structures have undergone a gradual development, from houses containing no glass whatever, to the forcing house of to-day which is nearly ninety-five per cent. of glass. The first house of which we have any record was built by Solomon de Caus, at Heidelberg, Germany, about 1619. It was used to shelter over four hundred orange trees planted in the ground, during the winter, and consisted of wooden shutters placed over a span roof framework, so as to form the walls and roof. It was warmed by means of four large furnaces, and ventilated by opening small shutters in the sides and roof. In the spring the framework was taken down. This structure, in size, compared well with the greenhouses of to-day as it was two hundred and eighty feet long and thirty-two feet wide. On account of the expense of putting up and taking down this framework, and of keeping it in repair, it was replaced by a structure of freestone. This had an opaque roof, and the openings in the sides were closed with shutters during the winter.

What’s great about reading through these older volumes is to see what has changed and what remains true about an efficient, functional greenhouse.  While they had no access to the modern materials such as the aluminum frames and insulated acrylic panels we use in our Sunglo Greenhouses, there is the same concern with durability, climate appropriateness, maximizing available sun and managing temperature.  We hope you have fun reading it!  And, if you decide not to build your own greenhouse out of wrought iron and glass, give us a call.

Acrylic vs. Poly-carbonate Greenhouses

I am often asked why we use acrylic for our greenhouses. With all the poly-carbonate models available today I find this to be a very valid question. Poly-carbonate has become cheaper and more readily available over the years, and I envy the ease of buying the material in sheets and simply cutting it to fit. However, I must only reflect on the ingenuity of our patented Therma-Truss design to remember that this is one attribute that truly sets a Sunglo Greenhouse apart from all the rest.
Dual Pane Acrylic Cross SectionThis dual pane design incorporates a smooth outer layer of UV stabilized impact resistant acrylic and a custom corrugated acrylic inner layer . Together they form 1.5 inches of dead air space and result in an impressively high insulation factor of R3.1 which is similar to a dual pane window. To achieve this with poly-carbonate would require such a triple thickness that light transmittal would be greatly diminished to 70%, 60% or even less. A Sunglo has 92% of the light come in. Light is your friend in a greenhouse. In fact, for all its insulating value the radiation transmittal rate is nearly the same as that of glass. Also, the UV stabilized and impact resistance treatment our material receives gives it an expected lifespan of 15 to 25 years without the yellowing so common of poly-carbonate. We guarantee the panels to remain clear for 12 years, even in the Arizona sun.  That gives our customers 8 to 15 more years to enjoy owning a Sunglo greenhouse without having to replace the glazing material. And even at that time you may only need to replace the flat roof outer panels. The corrugated inner panels are protected from UV by the outer panels and after a careful wash can still look great. In Seattle we have washed and re-used corrugated inner panels as old as 36 years.

We carry replacement panels for every greenhouse we have ever sold which are easily reinstalled into the durable framework. What all this means is that a Sunglo Greenhouse will create a better growing environment with less energy costs for many, many years.
For these reasons we continue to stand by our acrylic design as we have for over 40 years now, and I applaud the two Boeing engineers who originally conceived and patented the Therma-Truss system. Thanks for reading and please contact us if you have any questions about choosing the proper glazing material for your next greenhouse.