Tim Hance of All Islands Home Inspections documents handyman DIY repairs to a roof from a recent home inspection. Noted were displaced shingles, recently repaired and failed which, because they were displaced, I was able to tell there wasn’t a necessary tar paper underlayment installed. If you plan to conduct DIY repairs on your roof, please follow the installation instructions found on every package of roof shingles! Better yet, hire a roofing contractor.