Home & Garden Home How to Build an Igloo By Melissa Breyer Editorial Director Hunter College F.I.T., State University of New York Cornell University Melissa Breyer is Treehugger’s editorial director. She is a sustainability expert and author whose work has been published by the New York Times and National Geographic, among others. our editorial process Melissa Breyer Updated October 11, 2018 CC BY 2.0. Ian Carroll/Flickr Share Twitter Pinterest Email Home Family Pest Control Natural Cleaning DIY Green Living Thrift & Minimalism Sustainable Eating Or for the less committed, how to build a quinzee or a snow fort. From simple snow forts to intricate igloos, there’s something undeniably satisfying about forging a structure using materials exclusively supplied by the winter sky. If you find yourself with an abundance of snow and a hankering to go out and build something, here’s where to start. Construct a quinzee Guillaume Capron/Flickr/CC BY 2.0 A quinzee (or quinzhee) is a freeform snow-dome cave made by hollowing out a mound of snow. They differ from snow forts and igloos in that one doesn’t need to make snow bricks.1. Make the mound Shovel snow into a small mountain 7 to 8 feet in height and wide enough around to suit your needs. It is important to mix snows of different temperatures to cause it to harden – as you pile snow into the mound, flip it over like you’re tilling soil to help it mix. 2. Sit then dig The mound needs to sit for about 90 minutes to harden; consider this your hot cocoa break. Once the mound feels pretty solid, begin hollowing it out. If there is a downhill side, that’s where the entrance should be. As you dig, start at the top and work your way down, smoothing out the ceiling and walls as you go. Walls should be 1 to 2 feet thick, poke a measuring stick out to check thickness. You can create benches or beds inside by digging trenches in the floor of the snow. 3. Take careMake ventilation holes to prevent suffocation; also note that quinzees can collapse from poor snow condition, increase in air temperature, failure to let the mound harden enough, or from people clambering on top. Fashion a snow fort haven't the slightest/Flickr/CC BY 2.0 Is there a snowball war in your future? If so, a snowbound stronghold may be in order. Here we’ve elaborated on the basics as described by Popular Mechanics. 1. Lay out the floor planWith a shovel or broomstick, trace the outlines of your fort; this may just be a wall to provide cover from incoming armaments, or it may be a four-sided structure, depending on how much snow you have. 2. Prepare the bricksYou will need a mold to form the bricks – a bucket, plastic boxes, or even an ice chest. Look for moist packing snow rather than powder, which will not hold together as well. If you are stuck mostly with loose, powdery snow, seek out wetter snow closer to the house or landscaping that will be warmer and wetter. Pack the container with snow, and use a yardstick to loosen the edges to release the bricks when you’re ready. 3. Build the structureLine up bricks along the outline, spacing the bricks a few inches apart, then stack the next layer staggering the edges in the same way that bricks are laid. The gaps between bricks should be filled in and packed with snow. Since this is a fort, you just need to build the walls and not worry about a roof. 4. Ice the wallsFinally, dump buckets of cold water over the interior and exterior walls, working from the bottom up so as to prevent a collapse. As soon as the surface freezes, you are ready for a full-fledged snowball skirmish. May the odds be ever in your favor. Build an igloo Wikimedia Commons/CC BY 2.0 If your inner Inuit is calling, it may be time to build an igloo. This structure is the most complicated of the three, but really who cares because you get an igloo! Instructions here are for the most basic of igloos, "play igloos," if you will. For more tips and the spiral method, see the video at the bottom. 1. Source your snowBreak out the snow saw or knife and find a good source of dry, hard-packed snow, from which you will cut large snow blocks. Ideally the blocks should start out at about 3 feet long, 15 inches high and 8 inches deep, according to "The Complete Wilderness Training Guide,” and will decrease in size. Smooth the edges of the blocks. 2. Get buildingMark out a circle in the snow and start placing the snow blocks in said circle, staggering the blocks like conventional brickwork with each new row. Blocks should get smaller as you work your way up, and shape them so that they lean inward to create the dome. The blocks should work in a way that they hold each other up. You may need to support the structure with sticks inside until the dome is complete to prevent collapse. The last piece will be the center of the top. Find a block that is larger than the hole and shape it to fit very snugly. Then cut out a door with your handy snow saw. Pack loose snow into all the cracks and crevices and smooth out the interior walls. Finish by digging a tunnel to the door and cover with an archway of more snow blocks. And don’t forget to poke ventilation holes in the structure to prevent suffocation. Romain Cloff/Flickr/CC BY 2.0A luxury igloo to aspire to, pictured above, located in Finnish Lapland. Watch this classic educational film (complete with an old-school narrator who may be lacking in political correctness) to see how two men in the Canadian Far North build an igloo in an hour and a half.