subject: Plastic Window Covering | Home Winterizing [print this page] The plastic window covering will allow light into the house nearly as affectively as double glass windows. In the spring the plastic is easy to remove. This is a great DIY project if you live in an older house that has old fashion single glass windows. It will only take approximately fifteen minutes to install the plastic window covering on each window, time well spent for a comfortable warm house during the cold winter weather.