Roof Cricket Design Guidelines

It is generally accepted that the principle of getting water off of the roof will enhance the long term performance of the roof system. Certainteed flintboard pre cut polyisocyanurate roof crickets are pre packaged in triangular sections only not the entire cricket each with a right angle to align with certainteed s standard 4 x 4 tapered flintboard insulation panels. Cricket valley slope is independent of the cricket material slope.

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Proper Cricket Design

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1 the slope of the field either structurally sloped or with tapered insulation 2 the angle of the cricket up that slope i e the wider the cricket the more the slope of the deck is utilized.

Roof cricket design guidelines.

They are available in 1 4 per ft. Construction that is found to be outside the require. Cricket panel slope is typically double the roof surface slope. Crickets can be constructed of wood concrete.

Effectiveness of a cricket. The crickez system helps to simplify roof crickets with quicket. But many contractors and some design professionals do not understand the mechanics of proper cricket design. And 1 2 per ft.

Jun 15 2017 explore anibal carbonell s board roof cricket on pinterest. See more ideas about roof roofing roof repair. The functionality of the cricket is determined by the cricket valley slope. Recommended maximum l w ratios for crickets roof slope material slope l w ratio 3 1 3 1 4 1 courtesy of nrca.

Design guide the tapered polyiso. Design guide was developed as a tool for design professionals and contractors. Polyiso xps and eps roof insulation all work well with quicket. And many times the pitch rise is called out on the plans in new construction.

Roof cricket design guidelines i agree there is is no code for the cricket hence my building slightly steeper ones when in snow country or near a tall tree that drops seeds leaves to clog the shorter shallower valley sections of the cricket. Depending on the roof surface slope there is an accepted maximum length to width ratio. When designing the configuration of the cricket the nrca recommends designers recognize the importance of cricket geometry and valley slope and provide the following guidelines. The purpose of this guide is to act as a reference for tapered insulation design.

Supports roof corners deck perimeter penetrations and side laps you should bring the concerns to the owner general contractor roof system designer or roof deck installer to confirm the steel roof deck has been installed according to sdi fm global or other specified guide line. Crickets also known as saddles are structures built between roof drainage points to move water laterally across the roof diverting it to the drainage points. Cricket valley slope rise is the roof surface slope x 1 2 the cricket width. Tapered roof insulation and crickets are designed to provide effective drainage for epdm tpo pvc and built up bur membranes.

How to calculate cricket valley slope. Properly designed they virtually eliminate ponding see photo 1. Since roof drains are rarely placed in the lowest point of a structural sloping.