install movable insulation
- Windows already are well sealed and homeowner is willing to operate shutters
- 1 1/2-inch rigid extruded polystyrene insulation (you can use three 1/2-inch pieces)
- 2” x 2” fir lumber
- Construction adhesive
- Corrugated fasteners
- 3/4-inch drywall screws
- Latches and hinges (for hinged shutter)
- Exterior white paint
- Paint thinner for clean-up
- Utility knife
- Cloth shears
- Carpenter’s square
- Paint brush
- Electric drill
- Carpenter’s tool belt
- Mitre saw or circular saw
- Basic carpentry for pop-in shutters
- Skilled carpentry for hinged shutters
annual energy savings: $.19 to $.32/sq ft of window
average time required: 1 to 5 hours/window
- Measure the height and the width of the interior window frame.
- Cut 2” x 2” lumber for the frame as shown.
- Assemble the frame, keeping all corners at right angles and using corrugated fasteners.
- Cut the masonite to fit over the top and the bottom of the frame.
- Cut the insulation to fit inside the frame.
- Apply glue to the bottom side of the frame and nail one piece of masonite in place.
- Set insulation in the frame and attach the top piece of masonite.
- If you wish, apply the decorative fabric or adhesive paper to the interior surface of the shutter.
- Paint the outside of the shutter white.
- Install handles for easy removal.
- Install weatherstripping all around the shutter so that it fits tightly in the window.
HINGED INSULATED SHUTTERS
- Measure the dimensions of the window frame and cut 2” x 2” lumber for the frame.
- Follow steps 3 through 9 for pop-in shutters to assemble the shutter.
- Attach hinges and a latch to the shutter and the window.
- Install weatherstripping all around so no air can leak around the shutter when latched.