Understanding the Rake of a Roof
When it comes to roofing terminology, the word rake is one that often causes confusion among homeowners. Unlike more commonly understood terms like shingle, gutter, or ridge, the rake is a component of the roof that many people interact with every day without realizing it has a specific name and critical function. In this comprehensive guide, we will explain what the rake of a roof is, why it matters, the different types of rake configurations, and how to maintain this important structural element.
What Exactly Is a Roof Rake?
The rake of a roof refers to the sloped edge of the roof that extends from the eave at the bottom to the ridge at the top, running along the gable end of the building. In simpler terms, if you stand in front of a house with a traditional gable roof, the rake is the diagonal line you see running from the peak of the roof down to the edge on either side. It is essentially the exposed outer edge of the roof along the slope.
It is important to note that the rake is different from the eave. The eave is the horizontal edge of the roof that overhangs the exterior wall at the bottom. The rake is the sloped or inclined edge. Both serve important protective functions, but they are located on different parts of the roof and may be constructed differently.
The term rake can also refer to the trim or board that is installed along this edge. This trim piece, sometimes called the rake board or rake fascia, provides a finished appearance and helps protect the underlying roof structure from weather exposure. The rake board covers the ends of the roof decking and the edges of the roofing material, preventing water, wind, and pests from entering the roof assembly.
Types of Roof Rakes
There are several different configurations for roof rakes, each with its own advantages and aesthetic characteristics. The most common types include the closed rake, the extended rake, and the open rake.
A closed rake, also known as a flush rake, sits right at the edge of the exterior wall with little to no overhang. This configuration provides a clean, modern appearance and is common in contemporary architectural styles. However, because there is no overhang, the exterior wall below receives less protection from rain and sun exposure.
An extended rake features an overhang that projects beyond the exterior wall, similar to the overhang found at the eave. This overhang provides better protection for the siding and exterior wall below by directing rainwater away from the building. Extended rakes are common in traditional and craftsman-style homes and typically include a soffit on the underside of the overhang.
An open rake exposes the ends of the roof rafters or trusses, creating a rustic or industrial aesthetic. This style is less common in residential construction but can be found in certain architectural styles and in older buildings. Open rakes require careful detailing to prevent water infiltration at the exposed rafter ends.
The Function and Importance of the Roof Rake
The rake serves several important functions beyond simply defining the edge of the roof. First and foremost, it provides a critical barrier against water infiltration. The edge of the roof is one of the most vulnerable points for leaks, as wind-driven rain can push water up under the roofing material. A properly constructed rake with appropriate drip edge flashing directs water away from the underlying structure and prevents it from wicking back under the shingles or other roofing material.
The rake also contributes to the overall structural integrity of the roof. The rake board and associated trim components help secure the edges of the roof decking and provide a nailing surface for the final course of roofing material. Without a properly finished rake, the edges of the roof are susceptible to wind uplift, which can cause shingles to peel back and allow water to enter the roof system.
From an aesthetic standpoint, the rake is a highly visible element of the roof that significantly impacts the overall appearance of the building. The size and style of the rake overhang, the profile of the rake board, and any decorative elements such as crown molding or corbels all contribute to the architectural character of the home. A well-designed rake enhances curb appeal, while a poorly maintained or improperly finished rake can detract from the appearance of the entire structure.
Common Rake Problems and Maintenance
Like any exterior component of a building, the rake is subject to wear and deterioration over time. Common problems include rotting or warping of the rake board, damage from wind or falling branches, paint failure or peeling, and damage from pests such as woodpeckers or squirrels. Ice damming in cold climates can also cause damage to the rake area, as ice can build up along the edge and force water under the roofing material.
Regular inspection and maintenance of the rake is important for preserving the integrity of your roof. Check the rake boards for signs of rot, warping, or insect damage at least once or twice a year. Ensure that the drip edge flashing is intact and properly positioned. Repaint or restain exposed wood as needed to protect against moisture damage. If you notice any gaps or openings where the rake meets the siding or soffit, seal them promptly to prevent water and pest intrusion.
Rake Edge Flashing and Drip Edge
One of the most critical components associated with the rake is the drip edge flashing. Drip edge is a narrow strip of metal, typically aluminum or galvanized steel, that is installed along the edge of the roof to direct water away from the fascia and into the gutter system. Along the rake, the drip edge prevents water from flowing back under the roofing material and protects the underlying decking from moisture damage.
Most building codes now require drip edge installation on all roof edges, including the rake. If your home does not have drip edge along the rake, or if the existing drip edge is damaged or improperly installed, it is worth investing in this relatively inexpensive upgrade. Proper drip edge installation can prevent thousands of dollars in water damage repairs over the life of the roof.
Understanding the rake of your roof is essential knowledge for any homeowner. Whether you are planning a roof replacement, addressing maintenance issues, or simply want to communicate more effectively with your roofing contractor, knowing what the rake is and how it functions will help you make informed decisions about this critical component of your home's protective envelope.
