How Do You Build a Glass Greenhouse?


Quick Answer

Build a glass greenhouse that uses recycled wood windows by planning the structure, leveling the ground, installing a foundation, creating a weed-free floor, and installing the glass. The process requires several weekends to complete.

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Full Answer

  1. Gather old wood windows

    Collect wood windows with the glass intact from demolition projects. Ask before removing any materials. If windows have one or more panes missing, replace them.

  2. Create the design

    Inventory the windows you collect, and list their sizes. Use graph paper to create an appropriate design. Design one wall higher than the others so the structure sheds rain.

  3. Level the ground

    Mark the location of the new greenhouse with stakes. Tie twine between the stakes to mark the area. Add or remove soil as necessary to level the ground. Remove the twine and stakes.

  4. Build a foundation

    Dig postholes at each of the four corners and install pressure-treated posts, leaving 6 inches above the ground. Attach pressure-treated 2-by-6-inch boards to form the foundation of the greenhouse. Add concrete to the postholes, and trim the posts.

  5. Ensure a weed-free floor

    Cover the area inside the foundation with weed-blocking cloth. Cover the cloth with pea gravel.

  6. Build the walls

    Use the windows to create walls on three sides of the greenhouse. Use taller windows on one side to create a sloping roof. Use additional windows to create the roof. Cover the triangular opening at the end of the structure using plastic sheeting. Attach a tarp to the other end to create a door.

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