To build active radiation protection into your new home is a wise decision. However, it needs to be properly implemented with the appropriate knowledge, and products that have the performance you need for long-term benefit. Sadly, it is this knowledge that is sometimes missing–people buy products themselves, formulate its application themselves, or they have been advised poorly by other consultants.
A typical outcome is that the desired result is achieved only partially, or not at all. In any case, a review of your radiation protection measures may show possible gaps in the shielding, inferior products or approaches; and possibly, overlooked radiation sources.