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What is a Chimney Cricket?

What is a Chimney Cricket?

The Problem: Ponding On Top Of a Chimney

It’s a common occurrence to run across a roof which has a chimney too wide across the back. Both brick chimneys and wood sided chimneys need crickets if water or debris is getting trapped behind them. Either way, a chimney that is too wide almost always needs a cricket built behind it.

Chimney Cricket needs to be build because debris is behind the chimney This chimney needs a chimney cricket

The Solution: Chimney Crickets

What is a chimney cricket? A chimney cricket is a structure build on the uphill side which has two valleys and a small ridge built in it to divert standing water and debris. Chimney crickets don’t allow water to pond on top of a chimney.

When a chimney cricket is properly built, it will have ice and water shield behind it. At Pro Roofing NW, we prefer to use synthetic felt on top of the leak barrier.

Pro Roofing building a chimney cricket into a brick chimney

It’s not necessary to install a ridge vent on the small ridge of the chimney cricket because it’s not on top of the roof. In some cases, a rolled ridge vent might be a good option as an intake vent if the roof line needs more intake venting. That scenario is very rare, however, because proper venting can almost always be reached with soffit venting or eave venting.

After the structure of the chimney cricket has been built, metal valleys should be used as flashing. Then, the new chimney cricket structure needs to be flashed into the chimney side wall or the siding. Lastly, the roofers will install the shingles and the cricket will divert water.

Chimney Cricket built by Pro Roofing	
	
Partial Cricket, also known as a 1/2 cricket, done by Pro Roofing

What is the Cost of Chimney Cricket Installation?

A price from $150-$500 is usually appropriate for this type of work to be done. There are lots of levels of difficulty so the price will fluctuate.


If you have any questions about chimney crickets and would like to speak with the Pacific Northwest's premier roofing company,
please contact Pro Roofing NW today!


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