How To Install A Cricket On A Flat Roof

Secure the plywood triangles to the roof decking and cricket ridge with galvanized screws.

How to install a cricket on a flat roof.

A tapered roof cricket will protect the mortar and flashing of your chimney. This cricket s components are four pieces made from 2 4 and 3 4 plywood. Put metal flashing along the sides of the cricket nailed in place to overlap seams with the roof. Before installing a roof cricket you first should understand what it is and why it is important.

A cricket or saddle diverts water around the high point of a chimney or from one roof area to another. Mark the height of the cricket on the back edge of the chimney. The roof shingles and step flashing are then replaced. The height should be at least as high as the slope in order to direct water away from the chimney so if the slope is 4 in 12 place.

Install a waterproof membrane over the cricket sides and edges fastened to the cricket with a construction stapler. Cricket length points a to b generally the longer of the 2 cross sections. The horizontal ridge board is installed level and matches the roof angle on one end and sits on a vertical support at the chimney. Roof crickets are found on the high side of a chimney or when one roof meets another.

Roof surface slope the slope that is in the structural deck the slope created by tapered insulation or a combination of the two. Both pieces are screwed tot he roof. The lead counter flashing on the chimney will be installed next. The roof cricket is normally the same pitch as the rest of the roof but not always.

A roof cricket is a ridge structure designed to divert water on a roof. Today firms make tapered roof insulation crickets that are pre cut. Any tapered foam roof system will be a vast improvement over an older flat roof design.