To help, Karlsson and RHU began working with the furniture company IKEA to design better shelters.
“We wanted to build something more like a house with a strong frame that can withstand snow and storms,” says Karlsson.
They also wanted the structure to last for several years. This meant finding a material that was durable, lightweight, and inexpensive. One reason refugee shelters don’t last is that the sun’s ultraviolet (UV) rays break down their plastic parts. Stronger materials, like steel, are expensive and too heavy to ship.
Karlsson worked with materials scientists to find an alternative: a plastic called polyolefin foam, commonly used in food containers. Inexpensive and lightweight, it isn’t damaged by UV rays.
Karlsson used it to build a shelter that can be packed in a cardboard box and assembled on site, just like IKEA furniture. The design is modular, meaning that its various parts can be installed independently, without having to start over if something breaks. (For example, if a window cracks, it can easily be replaced.) The shelter is 188 square feet—twice as large as most refugee tents and big enough to comfortably house five people.
The shelter also has a metallic fabric cover that reflects sunlight during the day but traps heat at night to help regulate the temperature inside. A solar panel on the roof generates electricity to power a light and electronic devices.