Answer by  
                                                                                          TeacherSarah (34)
                                                            
                          
                          
                                                           We found a much cheaper alternative to a tub reliner, was hiring a fiberglass man. He drilled several holes in the bottom, injected several foam packs under the tub. The foam expands and hardens giving us a strong bottom. Then he used an acrylic material to fill in the holes, and cracks, sanded and buffed. Our tub looks like new!