A SOLARIUM with hot tub was added to a house on a wooded lot. The steps leading up to the hot tub platform are lined with flowering plants and shrubs. SUMMER COMFORTS ONCE A STRICTLY FUNCTIONAL STRUCTURE, THE SOLARIUM IS NOW A "SUNROOM EXTENSION." 5 olariums are the answer for those interested in enjoy- ing the out-of-doors all year round, but within the con- fines of less rigorous conditions. Once called greenhouses and once used primarily for growing exotic plants, solariums are quickly becoming an important part of the American residence. Since the energy-conscious days of the 1970s, more than 300,000 greenhouse-like struc- tures have been built onto Ameri- can homes, turning the glass room or wall enclosure concept (also known as sunroom extensions) in- to a $1.5 billion industry. Bob Binsfield, president of Con- servations Unlimited, Inc., South- field, says that the growth is taking place more quickly in states such as Michigan because even though the temperatures dive in winter, people still like to feel as though they are living outdoors. About 70 percent of the solari- ums Binsfield constructs are separate rooms with glass doors. The remaining are add-ons to a kitchen or family or breakfast room. 22 HOME SOLARIUMS "Whatever it is, it becomes the most popular room in the house," says Binsfield. "When guests visit, everyone gravitates to that area. Some even put their TV in the solarium and it becomes the den or family room." Binsfield says that the average solarium of 10' by 15' costs about $15,000 to construct and that costs can reach much higher depen- ding upon the materials and custom features. Technological advances in glass material has made it possible for the present state of the solarium art in which the glass lets in light yet prevents 65 percent of the sun's heat from penetrating the room. To prevent solariums from becoming too warm, dozens of shading systems are offered. Shading systems are also effective for providing privacy, and add to the aesthetic quality of the solarium. "If all the sun's heat entered a room, the temperature would reach 130 degrees in the summer, and no one would be using the room," explains Binsfield. "The type of glass used determines how the room will function. It's impor- tant that customers understand this and that the company they've hired to construct the solarium provides quality material." Binsfield likes to work with his customers, getting them involved with the design. He and his staff also work with those who pur- chase the do-it-yourself kits which can save 25 percent of the costs. Even though the renovations may not spell profit when it comes to reselling their homes, The Blooms and the Kaplans are among the ever increasing number of folks who are spending more on home improvements that enhance their leisure time. As an oft quoted saying states: "We don't stop playing because we grow old; we grow old because we stop playing." Adding recreational structures to our homes certainly increases the possibilities for leisure, making it not merely a refreshing change from tedious work, but recognizing leisure as profoundly important in its own right.