Preparing Your Roof and the Tiles

• 1). Remove one of the sides from both of your pieces of corrugated cardboard. Use your knife to remove any excess bits from the exposed corrugation.
  
  
• 2). Mix your wall putty with your water (approximately 3 parts putty to 1 part water).
  
  
• 3). Slide your barbecue skewers through the holes in your cardboard pieces' corrugation. These skewers will help your corrugations keep their shape while you work with them.
  
  
• 4). Brush your putty/water mix onto the corrugated parts of your cardboard. Three to four coats will be enough.
  
  
• 5). Draw a line parallel to the corrugation at the base of each arch on one of your pieces of cardboard. If you have six corrugated arches, then you will draw five lines. Remove your barbecue skewers from your corrugations.
  
  
• 6). Cut the piece of your cardboard with lines on it into strips. These strips should be about 2/5-inch across.
  
  
• 7). Remove the remaining cardboard from your strips.
  
  
• 8). Cut your strips of corrugation along the lines drawn on them in pencil.
  
  

Making Your Roof

• 1). Glue your cut-out corrugations onto the corrugations of your other piece of cardboard. Start gluing them in the bottom right and finish one row.
  
  
• 2). Draw a line about 1/20 of an inch from the edge of your row of laid corrugations once you have finished it. This marks how much overlap there should be between rows. Continue to lay rows and draw overlap lines until your roof is covered.
  
  
• 3). Cut off the excess along the edges of your roof.
  
  
• 4). Paint your completed roof with the colors of your choosing.