Q: How can I achieve energy efficiency with stucco walls?
A: Achieving energy efficiency with stucco walls involves meeting the stringent energy codes in California, such as Title-24. The ideal approach is to use an Exterior Insulation and Finish System (EIFS) with rigid insulation beneath the stucco finish. EIFS offers superior insulation, significantly reducing thermal bridging and enhancing energy performance.
In compliance with Title-24, EIFS systems can help you achieve the required U-factor and R-value for your exterior walls. By increasing the insulation’s thickness, you can enhance the overall energy efficiency of your home. For example, using a 2-inch expanded polystyrene (EPS) foam board with an acrylic finish can provide remarkable thermal performance.
Furthermore, ensure that the installation is done meticulously, addressing potential moisture concerns. Proper flashing, sealing, and caulking are essential to prevent water intrusion. This combination of high-quality EIFS, insulation, and expert installation will not only meet Title-24 requirements but also result in substantial energy savings, making your home more environmentally friendly and cost-effective in the long run.