The cheapest way to cover a patio is by using a tarp. You can either purchase or rent a tarp from your local hardware store. Be sure to measure the surface area of your patio to ensure that you get the correct size tarp.

The cheapest way to cover a patio is by using a tarp or plastic sheeting. You can either buy these materials or find them for free on sites like Craigslist or Freecycle.org. First, measure the dimensions of your patio and purchase a tarp or plastic sheet that is slightly larger in size. Next, spread the material out on the ground and secure it in place with bricks, rocks, or stakes. If you're using stakes, make sure to drive them into the ground along the perimeter of the patio so that the material will be held down tightly.