Homeowners in the UK are feeling deceived and frustrated after discovering that spray foam insulation, installed under a government scheme, is making their properties unsellable. Major mortgage lenders are rejecting homes with such insulation due to concerns about moisture and structural integrity. Despite the insulation being subsidized by the Green Homes Grant, homeowners like Robbie Anderson and Philippa from Wiltshire are now facing financial and logistical challenges, prompting calls for government action and better communication with lenders.