We manufacture EPS dome houses, and dome kits of various sizes. Each dome is manufactured in the United States, and is made with 100% Expanded Polystyrene. The construction of the dome house is fairly simple: Assembly Overview:Step 1 - Install Foundation 2 Ft larger than your Dome&＃39;s Diameter, Per SpecsStep 2 - Assemble Dome Sections Per SpecsStep 3 - Cut out sections for doors and windows,Step 4 - Carve notches for conduit in pre determined locations for electricalStep 5 - Install conduit and electrical wiringStep 6 - Install Doors & windowsStep 7- Apply structural plaster on interior of the dome first, then the outsideStep 8 - Seal both interior and exterior with elastomeric paintStep 9 - Finish Interior As Desired