u/Cornfield98

So 3 years ago more or less I bought a house out here in Des Moines and all was good passed inspection all the good stuff . Fast forward today find out one addition to the house, particularly the master bedroom, has a epdm roof with NO insulation whatsoever underneath. Considering in Iowas climate zone we need R49-R60 value of insulation in residential properties my bedroom has R-0 basically. With this spring weather and all the rain that comes with it my house is leaking like never before due to this problem. Will I be able to go back and do something about the home inspector not catching that or what are my options here??? Please my 515 people lmk I am debating getting a loan for all the work that needs done now.