Architectural Finials

Lightweight decorative finials look like stone or heavy-duty cast plaster but they're made with assorted shapes STYROFOAM™ Brand foam. Stone finish and brushed metallic paints finish the faux look.

Completion time – 2 hours

Designer – Kathleen George


  • Balls: 5"; 1-1/2"; four 1"
  • Block, 12" x 6" x 1"
  • Cones: 12" x 4"; 6" x 3"
  • Cube, 5"
  • Disc, 6" x 1"
  • Eggs: 5"; 4"
Other Materials
  • Brushed-metallic satin-finish spray paint: platinu
  • Stone-texture spray paints: light tan; light brown
  • Pre-mixed lightweight acrylic spackling


  • Serrated knife
  • Candle stub or paraffin
  • Pencil
  • Ruler
  • Firm paintbrush, 1"
  • Putty knife, 1"
  • Disposable bowl
  • Measuring cup and spoon
  • Water basin
  • Paper towels
  • Fine-grit sandpaper
  • Low-temp glue gun and glue sticks
  • Thick, white craft glue


General -

  • 1. Wax serrated knife with candle stub or paraffin. Cut foam block in half, creating two 6" squares. Cut remaining foam shapes as indicated below; use glue gun to assemble pieces and let dry completely before and after painting. Refer to photo throughout.

    Tall Finial -

  • 2. Cut equal corners, about 1-1/4"-deep, from 5" foam cube to create octagon-shaped piece; glue to 6" foam square base. Glue 1" foam balls to base corners.

  • 3. Cut four sides from tip of 12" foam cone to create 1"-tall pyramid shape; smooth side with fingertips.

  • 4. Cut 1-1/2"-thick horizontal slice from center of 5" foam egg; glue to top of octagon. Twist cone base firmly against top of egg slice; glue to secure.

    Short Finial -

  • 5. For shorter finial, cut 5" foam ball in half; reserve one half for future use. Cut narrow slice from rounded top of half-ball. Glue half-ball to foam disc base.

  • 6. Cut 1-1/2"-thick horizontal slice from bottom of 6" foam cone. Firmly twist bottom of this piece against top of half-ball until snug; glue to secure.

  • 7. Cut narrow slices from tip and base of 4" foam egg. Center and glue top portion of 6" cone to narrow end of egg; they will not fit precisely. Make four straight, slightly diagonal cuts down sides of cone/egg to form pyramid shape with rounded bottom; tip of cone should be about 5/8" square. Glue pyramid shape to previously assembled pieces as shown.

  • 8. Glue 1-1/2" foam ball to tip of cone.Painting -

  • 9. For each finial, mix 1 c. spackle with 1 T. water in small bowl until smooth and easy to spread.

  • 10. Using firm paintbrush, spread thin, even coat of spackle onto surface of each finial, covering top and sides only.

  • 11. Use putty knife to smooth surface of spackle. Dip paintbrush in clean water to lightly smooth edges where excess spackle tends to accumulate. Let dry completely.

  • 12. When dry, sand any imperfections. If needed, apply second light coat of spackle; let dry.

  • 13. Spray paint finials with desired metallic- or stone-finish paint. Let dry completely.