How to Winterize a Screened-In Porch

A screened-in porch offers an immense pleasure of relaxation during summer. One can escape from the trouble of insects and bugs by using screened porches. But when the temperature starts to lower and as winter arrives there is the need of winterizing the screened-in porches. This is done to prevent the flooring as well as the furniture from getting damaged. The winter insulation kit is needed for this process and it is readily available at a hardware store. These kits are available in fixed sizes which may not fit if the windows of the porch are too large. So, measurement of the windows must be taken first before purchasing the winter insulation kit, as the plastic drop sheets are more translucent and thicker depending on the window size. The process of winterizing a screened in porch is an easy task if the steps given below are followed.

Materials Required

  • Detachable window insulation strips (For glass windows)
  • Measuring Tape
  • Hammer
  • Finish nails
  • Door insulation strips
  • Insulating caulk
  • Knife or scissors
  • Heavy plastic window insulation kits
  • Transparent plastic sheeting
  • Caulk gun


Step 1: Cleaning

A thorough cleaning of the entire area of the porch is done at first. The floors can be swept and even mopped if necessary. If the screened-in porch has windows, they must cleaned thoroughly. Cleaning is done because once the winter starts, cleaning will be a difficult task as one has to remove the window plastic and insulation before cleaning. The window curtains should be removed and washed as well. 

Step 2: Measuring the Windows for Insulation

To insulate the glass windows, the interior length and width of the window must be measured. The removable insulation strips are cut based on the measurement to fit the windows. Now fix them to the inner edge of the windows. The area where there is a possibility of cold entering inside must be covered.

Step 3: Taking Measurement of the Window For Plastic Covering

The measurement of the windows for plastic covering is taken from outside the trim area. The plastic is cut by using a knife or scissors.

Step 4: Placing the Plastic Sheet

Use the finish nails to tack the plastic sheet at the corners and into the top of the trim region for every 4 to 5 inches. The nails should not be hammered completely into the trim, as the sheets will have to be removed after winter. The plastic is pulled taut to the bottom; ensure that the plastic does not tear. To make the plastic more transparent and fit tighter, a hair drier can be used.

Step 5: Insulating the Door

The door in the porch must insulated. If the doors are not used during winter, the method used for insulating the windows can be applied here. If necessary then, the door insulation strips can be used. The insulation strips must be covered in the gaps where there is a possibility of cold wind entering through porch.

Step 6: Insulating Other Areas

The remaining areas around the porch which may leak cold air and moisture inside must also be insulated. First check for the gaps which may be present at the base of the walls and floor of the porch. These areas must be scraped properly to remove the debris and it must filled with insulating caulk. Finally, the window coverings are to be replaced after the task is completed. You have successfully winterized a screened-in porch.