Are you thinking about installing a new roof? Do you have a chimney? Then you are going to want to make sure that you know about chimney crickets.

Your roof is designed for debris and water to slide down the sides, and then leave the roof through the gutter system. When an object blocks that path, like a chimney, the natural flow is interrupted. That’s where the cricket comes in.

A chimney cricket is essentially a small structure that is built on the backside of your chimney. It looks, and acts, like a miniature roof, with a peak and two valleys. It works to help divert debris and water away from the back of your chimney.

Why would I need one?

  • Your chimney is more than 30 inches in width.
    • This is actually a building requirement in many areas.
  • Your chimney is located on a downslope.
    • When water and debris flow down your roof, they can get stuck behind your chimney.
    • This causes standing water, and can also cause ice dams in the winter.
      • Your actual chimney can and will degrade.
      • It can also do real damage to your shingles. Shingles are not meant to sit in standing water (which also occurs under and behind an ice dam). Standing water will eventually find a way through your shingles and cause damage to your shingles, roof deck, and the interior of your home.

What is it made of?

A cricket can be made out of many different materials, including aluminum and steel. On an asphalt roof, we prefer to use typical roofing materials, and to match the cricket to the roof (metal roofs would have metal crickets). This means plywood, a roof deck, underlayment, and shingles. The cricket does not require its own ventilation system.

Can you build a cricket on an existing roof?

You can, but you really shouldn’t. If a company adds a cricket to an existing roof, it can damage the existing roof and shingles, and cause even more problems. Additionally, if your roof was damaged by standing water or debris, the cricket would not eliminate that damage.

When Allstate Roofing & More, LLC installs crickets, we would do it with a new roof installation, or as part of a partial roof replacement. That is the only way to warranty and guarantee the roof.

If you have a chimney and are in the market for a new roof, be sure to speak with your contractor to see if a cricket is right for your home. If you are experiencing issues around your chimney, take advantage of our free evaluations and estimates for residential customers and see if a cricket might be needed. Contact us anytime at 585-400-7663 or