EMF shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. EMF shielding can play a significant role in promoting environmental health, building health and building biology. Shielding can help reduce exposure to man-made electromagnetic fields (EMFs) that have been linked to various health problems 1. However, it is important to note that any metal shielding practice, even when correctly applied, attenuates not only man-made totally polarized EMFs but also the natural non-polarized EMFs responsible for the biological rhythmicity and well-being of all animals 2. Therefore, it’s best to engage a Building Biologist to conduct EMF testing for the home, to help identify problematic areas and EMF solutions to maintain a safe environment