Installing A Roof Cricket

By Robert Robillard on Roofing

Installing A Roof Cricket

Installing A Roof Cricket

Proper flashing around a chimney includes three layers.

  1. Rubberized underlayment
  2. Step Flashing
  3. Lead Counter Flashing

Rubberized membrane that runs on the roof and up the sidewall of the chimney. Sep flashing is an L-shaped sheet metal are woven into the shingle courses and lapped up the side of the chimney. Lead  counter flashing is embedded in the chimney mortar joints, and folded down to cover the top of the step flashing.

First Repair Any Rot

On this project, the roofing was stripped back, and rotted wood and wet insulation was replaced. New roof sheathing, and ice and water shield is then installed and wrapped up the chimney. The roof shingles and step flashing are then replaced. The lead “counter-flashing” on the chimney will be installed next.

Installing A Roof Cricket

This cricket’s components are four pieces made from 2×4 and 3/4″ plywood.

Installing A Roof Cricket

The horizontal ridge board is installed level and matches the roof angle on one end and sits on a vertical support at the chimney. Both pieces are screwed tot he roof.

Installing A Roof Cricket

3/4″ plywood that extends to the edge of the chimney is installed secured to the horizontal 2×4 ridge and along the roofs edge with screws.

Installing A Roof Cricket

Cricket frame installed.

Installing A Roof Cricket

Side view showing how water used to run down this roof and hit the chimney, pooling, and eventually making its way into the house.

Installing A Roof Cricket

Ice and water shield, a Grace product, is installed over the cricket and up the chimney face.

Installing A Roof Cricket

Step flashing and roofing is applied next. When we come back we will grinding out the old lead counter “cap” flashing and install all new lead flashing.

Installing A Roof Cricket

~ concord carpenter

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About the author

Robert Robillard

Carpenter / Remodeler / Editor

Rob Robillard is “The Concord Carpenter” Rob is a builder, general contractor, carpenter, woodworker, and editor of Concord Carpenter and ToolBoxBuzz As a General Contractor and carpenter, Rob owns and operates Concord Carpenter LLC. A full-service remodeling and construction company. Rob is a recognized leader in home building best practices and a source for how-to information for building professionals. On this website, Rob covers all aspects of home construction, building science, home improvement, woodworking, remodeling, and some of the best product and tool reviews. Rob is in charge of our Tool and Product Review series - Concord Carpenter Videos where we post all of our tool reviews and video tutorials. Rob approaches remodeling and building construction with a pragmatic and problem-solving approach. He enjoys using his knowledge and experience to help and educate building professionals as well as DIYers on best practices in the construction and remodeling industry. He's a strong advocate for "raising the bar" in the construction trades and promoting the trades to youth. #BeAMentor #Green2Great Craftsmanship, quality, and pride guide his journey on this channel The Concord Carpenter's motto: "Well done is better than well said!" : Read more about Rob

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