It takes more than a day to install a new roof. There are several stages to the process, and they must be followed to ensure that your new roof is secure and long-lasting. 

1. Primary Inspection

Before the work can begin, your contractor needs to inspect the roof to determine the expected depth of the project. This usually requires climbing onto the roof to check for damage, possible leaks, and soft spots or punctures that go through the decking. The contractor may also enter the attic to inspect for damage to the underside of the roof and to check on the condition of the ventilation system.

2. Tear-Down

Taking off the old roofing shingles and underlayment membrane, right down to the decking boards, is the next part of the project. This part usually goes quickly because the shingles are simply torn off and old nails are removed to make way for the new roof. 

3. Secondary Inspection

After the initial tear-down, your contractor will perform a secondary inspection to check for any damages that weren't visible when the shingles were still in place. Most often, issues are found on the decking boards, often from previous leaks that have caused the boards to develop rotten spots. After this inspection, any other elements of the roof that were damaged will be removed to prepare for installation. 

4. Structural Repairs

Main structural repairs must occur before the new shingles are placed. For example, your roofers may cut out damaged sections of decking and replace them with new ones. Weak or damaged trusses may also need to be replaced, or your roof may require the installation of modern wind brackets to protect against future damage. This is also the stage where items like pass-through vents or damaged roof eaves are replaced or repaired. 

5. Roof Installation

Finally, the roof is put on. This begins with laying down the underlayment, which may also be referred to as roofing felt or tar paper. Next, the drip seal membrane is installed around the lower edge of the roof, and any flashing that needs to be replaced is put into place. The final step is installing the shingles over the entire surface of the roof. 

6. Finish Work 

The finishing work will further guard against leaks. For most roofs this is simple—valleys will be flashed, peaks will be capped, and flashing around penetrations will be sealed in place. Your roofer may also need to install extra protection, such as shuttles to reroute water flow around skylights or heat cables to prevent snow buildup along the eaves.

Contact a roof replacement service to get a quote on a new roof today.