Roof build materials are going to differ by the part of the country you are in and the style of roof you may be looking at, but some of the most common types of overlayment materials:

1-Asphalt Shingle is a type of wall or roof shingle that uses asphalt for waterproofing. It is one of the most widely used roofing covers in North America because it has a relatively inexpensive up-front cost and is fairly simple to install.

2-Concrete Tiled material is made out of processed concrete that is treated and molded for maximum durability. They are noticeably uniform in color, when compared to natural material roofs. These concrete tiled roofs come in flat, S, and W, styles and will more often have interlocking sections. These tiles interlock at a lip section, and dislocated tiles will stand out as a result of broken continuity.

3-Clay Tile or Rock Slate roofs are made of natural materials but are sometimes more delicate. These styles of roofing materials have aesthetic appeal but can add up to 30% to the cost of a conventional roof using asphalt shingles. 

4-Standing roofs come in standing seam and corrugated roofs. Standing seam has a seam that stands above the roof line and the sections are brought together at the seams. 

5-Metal Tile roofs have a strong resemblance to concrete tile roofs. The metal tiles are delicate to walk on and are prone to denting if not walked on gingerly. 

6-Natural Wood Shake roofs are noticeably different than other styles of roofs. This kind of roof is also somewhat tricky to find damage in. Unlike other tiles where you can see cracks that may let in water, wood shingles don’t have easily identifiable signs of damage. 

7-Flat roofs of any kind require special attention from the property owner, a great frequency of inspection or maintenance, and have a shorter lifespan than other roof materials.  

8-Rolled Composition roofs are sealed with heat-applied or adhesive applied rolls of composition material. These kinds of roofs are typically used for lower pitched roofs. 

9-Vinyl roof material is rolled onto roof and applied with direct heat. 

10-Some flat roofs are made of rolled tar and gravel though this less the case as rolled materials improve in technology. 

Roof underlayment is the second layer of protection, though that part of the roof is not easily inspected with a drone since it requires removing overlayment materials.