Firstly, the primary function of weather rubber strips is to seal gaps around doors, windows, and other openings. Over time, these areas can develop cracks or gaps, allowing air to escape and enter. This not only affects the indoor climate but also leads to increased energy costs. According to the U.S. Department of Energy, sealing even the smallest gaps around a home can significantly reduce heating and cooling costs by up to 20%. By applying weather rubber strips, homeowners can create a tighter seal, resulting in a more energy-efficient living environment.