There’s a lot of roof terminology in the construction world which may not be completely clear to many homeowners. However, many of these terms refer to critical components of a home everyone should be aware of. If you’re interested in having your roof repaired or replaced, take a few moments to review the definitions of some of these important terms. You’ll gain a much better grasp on roofing in general and have an easier time understanding the work being done on your roof.

1. Deck/Sheathing

The deck, or sheathing, is the material installed on the rafters shingles or another roofing material is fastened to. Typically, sheathing is made of plywood or oriented strand board (OSB). Plywood is typically used to support heavier roofing materials like slate tiles or concrete.

2. Drip edge

The drip edge is metal-flanged flashing along the edge of a roof. This flashing is responsible for keeping water off the fascia itself and helping direct water away from the foundation. The drip edge also prevents pests from getting into any gaps along the eaves.

3. Eave and Fascia

An eave is a section which extends out from the roof and is meant to ensure water is dispersed to the side of the house. The fascia is the actual trim board just beneath the eave.

4. Felt/Underlayment

The underlayment is a sheet of protection added above the sheathing but beneath the shingles. This material ensures water doesn’t penetrate into the support structure of the roof.

5. Flashing

Flashing is a general term referring to strips of metal used to seal areas of the roof. This material is needed to make places like the edge of skylights and air vents waterproof.

6. Penetrations

Penetrations are any portion of the roof potentially vulnerable to water leaks. This includes areas around things like skylights, air vents, electrical conduit, or roof-installed satellite dishes. Penetrations should be located and sealed to protect the support structure of the roof.

7. Tear-Off

Tear-off refers to the process professional roofers employ when removing shingles from a roof in preparation for a roof replacement

8. Rafters

Rafters are ribs of wood boards supporting the deck, underlayment, and shingles of the roof. In many homes, rafters are exposed and can be inspected from the attic space.

9. Ridge

The ridge of a roof is the highest point at which two slopes meet on a house. Depending on how a particular house is framed, ridges may be constructed in different ways.

10. Slope/Pitch

Slope and pitch are terms which refer to the angle of any given part of the roof over any given distance.

11. Square

A square is a roofing term used to describe 100 square feet of a roof. This term is used by professionals in the roofing industry to determine an exact amount of roofing materials needed to cover a given area.

12. Soffits

The soffit is the underside of the fascia. This part of the roof helps shed water away from the house as well. 

13. Truss

A truss refers to the support beams running in a series beneath your roof, supporting the whole weight of the roof. Trusses are typically preferred to rafters for their affordability and ease of install.

14. Valley

The valley of a roof is the area where two slopes come together in a dip. Valleys are considered vulnerable areas of the roof and professional installation is recommended to prevent water leakage.

15. Vapor barrier

A vapor barrier is a protective layer of insulation installed on the underside of the roof to prevent the buildup of condensation.

16. Hip

A hip-roof is a design in which all sides of the roof are sloping downwards. There are several different hip-roof designs.

17. Vents

Roof vents allow air to easily flow in and out of your attic space, keeping the area ventilated.

18. Fire Rating

Roofing materials have different fire ratings attached to them. This ranking system goes from C, the lowest, up to A, which is the best quality. An example of Class-A material would be clay tiles while untreated wood shakes have a Class-C fire rating.

19. Granules

Roofing granules are small, coarse pieces of rock most commonly seen on roof shingles. This material helps protect the roof from UV rays.

For expert guidance repairing or installing the roof on your Tulsa home, contact Perfection Roofing today. Since 1979 our seasoned experts have strived to provide superior service with all aspects or residential roofing repair, replacement, and maintenance. Call us today to learn more.