How to build a chimney cricket?
Building a chimney cricket involves creating a peaked structure on the high side of the chimney to divert water away and prevent pooling. Start by measuring the width and length of the chimney, adding extra inches for proper coverage. Construct a wooden frame in the shape of a cricket, ensuring it aligns with the chimney slope. Attach the frame securely to the roof decking, creating a stable foundation. Next, sheath the frame with plywood, forming the cricket’s base. Cover the wooden structure with metal flashing, ensuring it extends up the sides of the chimney. Seal the seams with roofing cement to create a watertight barrier. Regular inspections and maintenance are crucial to ensure the effectiveness of the cricket in preventing water damage around the chimney.
What is a chimney cricket?
A chimney cricket is a peaked, high side of the chimney, specialized construction where it meets the roof. A chimney cricket is often referred to as a saddle or a diverter. It diverts water from the chimney base. The cricket is a very important part of making sure that water is turned away from the chimney’s base. By this, the system protects the chimney from water damage and in turn is responsible for increasing the lifespan and the structural integrity of the chimney in general. Normally of wood or metal make, a cricket diverts water around a chimney, which would have otherwise settled around it, to the inside part of the chimney from the rooftop in question, therefore protecting a chimney from water damage. A cricket, by leading water away from the base of the chimney, is an important part of any roof design, particularly where very rainy areas are involved.
Types of chimney crickets
Standard Cricket
The Standard Cricket is a classic design, featuring a peaked structure strategically placed on the high side of a chimney to divert water away. Its simplicity makes it a versatile choice for various roof configurations, effectively preventing water pooling and potential leaks around the chimney base.
Wedge Cricket
Designed for chimneys situated between two roof planes, the Wedge Cricket showcases a tapered shape. This design facilitates efficient water runoff, ensuring that rainwater smoothly flows around the chimney. The Wedge Cricket is particularly effective in areas with heavy rainfall and steep roofs.
Double-Wide Cricket
Tailored for larger chimneys, the Double-Wide Cricket offers extended coverage. This design accommodates broader structures, providing ample protection against water accumulation. It is a robust solution for chimneys that demand a wider diverting structure to safeguard against potential water-related issues.
Stepped Cricket
The Stepped Cricket is characterized by a series of step-like platforms. Ideal for steep roofs, this design allows for incremental coverage, ensuring effective water diversion. The stepped structure is particularly useful in regions prone to heavy rainfall, where a multi-tiered approach enhances water runoff efficiency.
Side-Saddle Cricket
The Side-Saddle Cricket is a specialized design suitable for chimneys positioned near the roof’s edge. Resembling a small sloped roof section, it effectively diverts water away from the chimney base. This design is particularly useful in situations where a standard cricket may be challenging due to the chimney’s location and proximity to the roof edge.
How to build a chimney cricket : Step by Step
To build a chimney cricket, follow these step-by-step instructions:
- Measure and Plan: Begin by measuring the width and length of the chimney, adding a few extra inches for proper coverage. Plan the design based on the roof slope and the position of the chimney.
- Create a Wooden Frame: Construct a wooden frame in the shape of the cricket, ensuring it aligns with the slope of the roof. This frame serves as the foundation for the cricket structure.
- Attach the Frame Securely: Securely attach the wooden frame to the roof decking, ensuring stability and a proper fit against the chimney. Use screws or nails to secure the frame in place.
- Sheath with Plywood: Sheath the wooden frame with plywood to form the base of the cricket. This provides a stable surface for the flashing material and ensures durability.
- Cut and Install Metal Flashing: Cut metal flashing to fit the wooden cricket structure, ensuring it extends up the sides of the chimney. Install the flashing securely using roofing nails, ensuring a watertight seal.
- Seal Seams with Roofing Cement: Apply roofing cement along the seams where the flashing meets both the chimney and the roof. This step is crucial for creating a watertight barrier and preventing water infiltration.
- Inspect and Maintain: Regularly inspect the cricket for signs of wear, damage, or loose components. Promptly address any issues to ensure the ongoing effectiveness of the cricket in preventing water damage around the chimney.
By following these steps, you can successfully build a chimney cricket, enhancing the protection of your chimney and preventing potential water-related issues.
FAQs
Q: Why is building a chimney cricket important? A: Building a chimney cricket is crucial to divert water away from the chimney, preventing pooling and potential leaks. It helps protect the chimney structure and surrounding areas from water damage.
Q: What materials do I need to build a chimney cricket? A: You will need materials such as wood for the frame, plywood for sheathing, metal flashing, roofing nails, screws, and roofing cement. The specific materials may vary based on your roofing type and local climate.
Q: Can I build a chimney cricket myself, or should I hire a professional? A: While it is possible for homeowners to build a chimney cricket, hiring a professional is advisable, especially if unfamiliar with roofing techniques. Professionals can ensure precision and expertise for an effective and watertight installation.
Q: How do I measure the chimney for the cricket? A: Measure the width and length of the chimney, adding a few extra inches for proper coverage. Consider the roof slope and the cricket’s position to determine the appropriate dimensions.
Q: What is the purpose of sheathing the wooden frame with plywood? A: Sheathing the frame with plywood provides a stable surface for the flashing material, ensuring durability and a solid foundation for the chimney cricket structure.
Q: How do I cut and install metal flashing for the chimney cricket? A: Cut the metal flashing to fit the wooden cricket structure, making sure it extends up the sides of the chimney. Secure the flashing in place using roofing nails for a watertight seal.
Q: What role does roofing cement play in building a chimney cricket? A: Roofing cement is applied along the seams where the flashing meets the chimney and the roof. This step is crucial for creating a watertight barrier and preventing water infiltration.
Q: How often should I inspect and maintain the chimney cricket? A: Regular inspections are essential. Check for signs of wear, damage, or loose components. Promptly address any issues to ensure the ongoing effectiveness of the cricket in preventing water damage around the chimney.
Q: Can I build a chimney cricket for any type of roof? A: Yes, chimney crickets can be built for various roof types. The design and dimensions may vary based on factors such as roof slope and the position of the chimney.
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