What Is a Roof Cricket?

By Dawn Killough 10-17-2022
Tag Icon

Roof crickets are a valuable part of any roof system. They can help prevent water from ponding and pooling near roof penetrations, like chimneys, roof curbs, and skylights, and they help divert water to draining locations. If water is allowed to collect in these areas, it can lead to leaks and structural problems.

For a more detailed exploration of the question "What is a roof cricket?," we'll take a look at their purpose, the various types, and when you should use one.

What Is a Roof Cricket?

A roof cricket, also called a saddle, is a triangular structure installed behind a chimney, skylight, or other roof protrusion to help divert water toward a drainage location. They are placed on the high side of a sloped roof face and split the run of the water around the obstacle instead of allowing it to pool at its base. Crickets aim to guide rainwater to drains and downspouts so that it flows off and away from the roof. They also help prevent debris like leaves and sticks from building up.

On low-sloped roofs (typically with a slope of 1/4" per foot built into the structure or created with tapered insulation), crickets are also used to help divert water to drains and scuppers. Standing water on low-sloped roofs can lead to structural damage caused by the weight of the ponding water, as well as to debris buildup, and other issues. To help prevent this, contractors install crickets at low areas at the perimeter of the roof, between drains and wall scuppers, and around HVAC or electrical equipment or skylights.

Types of Roof Crickets

On steep-sloped roofs, crickets are usually wood-framed structures covered either with metal or a roofing material like asphalt shingles. They are constructed in a half-diamond pattern for use behind chimneys, skylights, HVAC, or electrical equipment, and other curbs or penetrations. Metals commonly used for crickets include copper or galvanized steel, both of which help prevent rusting and corrosion. All crickets require metal flashing on the penetration to help prevent water from seeping into the roof deck. If water gets under the roofing system, it can cause leaks, mold, mildew, and structural damage.

On a low-slope roof system, crickets are built using sloped rigid insulation and then covered with the membrane roofing system. Crickets for low-sloped roofs are built in a triangular or diamond-shaped pattern and have a slope double that of the roof for a net-positive backslope. A quarter-diamond pattern is used in a corner of a flat roof near the parapet wall. A full diamond pattern is used between two roof drains.

When You Should Use a Roof Cricket

Building codes in some areas may require crickets on certain chimneys. If this is required, you may need to add crickets when remodeling or replacing your roof.

Chimneys, skylights, or other roof protrusions located in areas with high water flow during a rain event will also need crickets to help reduce the risk of water pooling.

A Worthwhile Investment

Roof crickets help reduce the risk of water damage caused by pooling and ponding near large penetrations like chimneys, skylights, or equipment curbs. On both low-sloped and steep-sloped roofs they also help prevent water stagnation. When remodeling or reroofing, it's a good time to consider adding crickets. To determine whether or not you should consider having roof crickets installed on your roof, reach out to a local roofing contractor certified by GAF*.

*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.

Dawn Killough is a freelance writer in the construction, finance, and accounting fields. She is the author of an ebook about green building and writes for construction tech and green building websites. She lives in Salem, Oregon with her husband and four cats.
Don't miss another GAF RoofViews post!
Aromatic logs, the orange glow of flames, and the heat emanating from a fireplace can make even the coldest winter days more tolerable. Preparing your fireplace for winter is imperative to ensure that it performs efficiently and safely throughout the cold season and beyond. Here are some tips for preparing a fireplace and chimney for winter so it can provide the comfort you desire during the cold months.
As part of the nation's longstanding tradition of honoring people who have served in the armed forces, a new museum has been built to recognize those who have been awarded the highest military decoration, the Medal of Honor. GAF is proud to be playing a role in the Gainesville Medal of Honor Museum and Education Center in Texas, set to open its doors in 2024.
One high-stress area of a residential roof is where its two faces meet, either at a hip or a ridge. Protecting these areas helps reduce the risk of leaks. Before the advent of shingles purpose-made for hip and ridge caps, roofers typically cut up 3-tab strip shingles and bent them over these areas of the roof. Today, specially made versions of these types of shingles provide better protection while maintaining a roof's aesthetic appeal.
Buildings are designed to keep the outside weather out and the inside space conditioned as the occupants desire. A building's enclosure or envelope is made up of multiple layers of materials with the goal of stopping the uncontrolled movement of water, air, heat, and moisture vapor.
Work is getting underway in Greater Charlotte, North Carolina, as GAF supports Habitat for Humanity with the 2023 Jimmy and Rosalynn Carter Work Project. The five-day build event began in 1984 when former President Jimmy Carter and former first lady Rosalyn Carter led a group of Habitat for Humanity volunteers to New York, building alongside 19 families in need of safe, affordable housing. For 36 years, the Carters have worked side by side with professional builders and volunteers at locations around the world to build and raise awareness of affordable housing.
Looking for the best roofing materials for your outdoor office, shed, or garage roof? It's not just about curb appeal—although looks are important. Learning about the materials to consider for your roof pitch can help you reduce the risk of roof leaks. You can also benefit by knowing when you need roof ventilation or drip edging, when to consider insulation, and how to calculate roof materials costs. Here are the key details to understand.
This blog contains information created by a variety of sources, including internal and third party writers. The opinions and views expressed do not necessarily represent those of GAF. The content is for informational purposes only. It is not intended to constitute financial, accounting, tax or legal advice. GAF does not guarantee the accuracy, reliability, and completeness of the information. In no event shall GAF be held responsible or liable for errors or omissions in the content or for the results, damages or losses caused by or in connection with the use of or reliance on the content.

Interested in sharing or republishing our content? We kindly ask you to adhere to our guidelines.