Most home or business owners understand the importance of a roofing system. A roof keeps protect everything inside the structure from extreme weather, improves property value, and helps control the interior climate. However, not many people understand how the process works, especially when it cannot get fixed through a simple roof repair. There are many steps to replacing a roof, beyond just nailing down shingles after the old ones get ripped off.

Protecting Other Structure or Property

Before a roofing contractor can start on a roof, they must first take steps to protect other structures on the property. This includes having the property own move machinery, vehicles, and other items away from the tear off-site. As old shingles get slung off the roof, roofers tend to toss them over the sides of the structure onto the ground or into a waste container. Once everything nearby gets removed from potential damage, many companies will cover the sides of the structure with a large plastic tarp and plywood to redirect falling shingles to the ground. This prevents damage from shingles banging against the sides of the structure. Other items located nearby that cannot get moved may also get the same tarp and plywood protection to reduce potential damage.

Removing Old Shingles

After proper precautions to prevent damage being done, it’s time to remove the old shingles from the roof deck. This requires multiple roofers to climb on top of the structure and pull off all the shingles. These shingles will get thrown over the sides onto the ground or tossed inside a dumpster.

Deck Inspection

Once the old shingles are off and before the new shingles go on, the roofing company must inspect the roof deck to make sure it can support the roofing structure. If the deck has broken, rotted, or otherwise unacceptable sections, they must get replaced before the new shingles go on. These sections get replaced with brand new sheets of wood that are weather protected to delay damage during extreme weather. Without replacing the unstable pieces, the shingles won’t properly stay attached causing leaks, blow-offs, and other problems that risk everything inside of the structure.

In addition, roofing companies in Allen TX like this one here: must inspect the wood deck to make sure they’ve been nailed to the rafters securely and in the proper way. As the decOncek ages, nails come to lose or break off, sacrificing the wood sheetings integrity. Pieces that aren’t secured properly must get nailed down to the roofs rafters before the new shingles go on.

 Roof Installation

After the inspection, the roofing contractor can now place the new materials on the roof. The first step of this process involves laying a drip edge along the edge of the roof decking. This prevents water from getting under the shingles and causing the deck to rot or leak. Next, contractors will place an underlayment around the bottom of the roof and at any roof connections such as a chimney or vents. This prevents the deck from experiencing any water leaks.

Furthermore, contractors will need to install a felt underlayment across the entirety of the roof after they place the first type of underlayment. This material stops the shingles from sticking to the wood decking causing a variety of problems for both the contractor and the property owner. Finally, contractors will then begin placing the shingles at the bottom of the roof working their way up towards the top. As they lay the shingles down, they’re also ridge capping, flashing, vents, and other important pieces to make the roof complete.


As if replacing the roof wasn’t strenuous enough, contractors are also responsible for the cleanup after a job gets finished. They must remove the dumpster used to catch the old materials, clean up all the old material off the ground and surrounding structures, and take down the tarps and plywood used to protect nearby structures. Many contractors also work diligently to remove as many nails and other materials from the property that could potentially damage machinery or vehicles.


The last step of the process is the inspection. Every contractor must inspect the completed roof to make sure that it meets local building codes and that nothing was left out, forgotten, or done improperly. Even more so, they inspect the roof to make sure that it meets the satisfaction of the property owner.

As most can see, replacing a roof requires many important steps to complete the job efficiently. Each step serves an important purpose that protects the property owner, the structure, and the contractor equally.