Roof Cricket Slope

When designing a cricket two items need to be designed slope and configuration of the cricket.

Roof cricket slope.

And 4 12 minimum roof slope for slate and wood shakes. Roof crickets can be covered with metal flashing or with the same material as the rest of the roof. Roof crickets are found on the high side of a chimney or when one roof meets another. Installing a roof cricket.

Crickets are also often referred to as saddles in this context. The shaded cells once again represent a properly designed cricket based on our previously stated criteria providing a slope of 1 8 inch per foot plus or minus 10 percent. Then we were able to correct the owner s ponding water concerns. I e if the roof surface slope is 1 4 ft the cricket panel slope should be 1 2 ft there are exceptions to this rule please call us for further information.

Jason smithpeterson dean roofing inc. Roof slope created a simple and great fix to a project were crickets were missed and ponding water became an issue for an owner. The roof cricket is normally the same pitch as the rest of the roof but not always. We were able to make new crickets to the existing roof membrane providing positive water flow to the drains.

Quicket material slope of per foot combines with and reverses the deck slope to net a per foot finished slope. Below are some. The industry rule of thumb is that the cricket panel slope should be twice that of the roof surface slope. 2 12 minimum roof slope for asphalt shingles photovoltaic pv shingles and building integrated pv.

Figure 3 shows cricket valley slope calculations to acheive that 1 8 per foot standard. Depending on the roof surface slope there is an accepted maximum length to width ratio. A general rule for designing sufficient slope in crickets is that its slope shall be twice the slope of the adjacent roof field. Mark the height of the cricket on the back edge of the chimney.

Cricket valley slope is independent of the cricket material slope. Cricket panel slope is typically double the roof surface slope. The manufactured slope of the cricket panel. Typically that will keep water from remaining on the cricket surface.

For steep slope roof systems ibc 2018 provides for a 1 12 minimum roof slope for mineral surfaced roof roll roofing. 2 1 2 12 minimum roof slope for clay and concrete tile. 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. Most commercial building codes require per foot slope of the membrane.

When the chimney is at the bottom of a roof slope or has roof sloping into it i always install a cricket.