How To Install A New Roof

If the shingles on your home appear shiny (indicating a loss of granules), are missing, curling up, or stained with mold and mildew, you may need to have your roof replaced. Replacing a roof can be done yourself (with a group of friends). Replacing a roof is not an easy task, and will take some time to complete the job. Before attempting the task yourself, get an estimate from a professional. Depending on the type of damage to your roof, the replacement cost may be covered by your insurance company. If you want to go through with this job yourself, see below for helpful tips and instructions on how to roof your home yourself.

Tools And Materials You'll Need:

  • Roofing shingles
  • Plywood (if any wood on your roof is damaged)
  • Underlayment
  • Nail gun and nails
  • Shovel
  • Pry bar
  • Ladder


  1. To begin with, you'll need to inspect your roof for damage. If your shingles are just bare (without granules), you can roof directly over the old shingles. If you have a lot of missing shingles, or your roof has damage to the wood below, you'll need to strip the old shingles off, replace the wood that is damaged, then begin roofing.
  2. Once you have inspected your roof and have your plan in place, it's time to find some friends to help you. This is a big job, do not attempt it by yourself.
  3. For a bare roof, you'll need to lay out underlayment, which usually comes in a roll and is easy to install. Unroll it along the roof, starting at the top and working your way across the roof. Nail it into place, then work on the next row. Continue in this pattern until you have underlayment all over your roof.
  4. Add flashing around vents and chimneys, nailing and caulking them into place.
  5. Start installing the shingles beginning at the bottom of the roof. The bottom layer will be a double layer. Turn the first layer of shingles along the drip edge upside down so the tabs are on the drip edge. Repeat this all the way across the bottom edge. Then add shingles to this bottom layer the right way (turned so the tab is higher on your roof). The double layer helps protect the drip edge.
  6. Nail 4 nails into each tab, staggering the shingle tabs as you move along. You may need to make cuts when you get to each end. Work your way up to the top of your roof, then repeat the same shingle installation process on the other side (or sides).

Installing a new roof takes time. Be sure to watch the weather, as you'll want a at least a week of good weather. Contact a professional like Berkeley Exteriors to have your roof installed for you to save yourself the time and energy.