Firestone Building Products

INSULATION

Product Overview

Tapered Insulation Purpose

 

K. R. Kline & Associates, Inc. uses Firestone insulation products.

Firestone is a member in good standing of PIMA.

The following Firestone products are approved by the
"PIMA Quality MarkCM Program":

 

  • HailGard
  • ISO 300
  • Iso 95+
  • Iso 95+ Perlite Composite
  • Iso 95+ Woodfiber Composite
  • NailBase
  • RetroGard

 

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SUMMARY

  • National Agencies & Code Groups require a minimum slope.
    - 1/4"/ft. minimum in most cases
    - Provided by structure or a tapered insulation system
    - Ponds existing after 48 hours not acceptable
      to any of the major code bodies
  • The goal is to drain water from the roof!
  • Several tapered designs possible
  • Use 4-way slope design as often as possible
  • Draw lines at 45 degree angles from drains
  • Crickets divert water
  • 3 main factors to cricket performance:
     roof suface slope, cricket valley slope, and cricket width
  • Be clear and concise on drawings and specifications
  • Provide as much information as possible
  • Locate drains symmetrically and in line as often as possible
  • Never space drains more than 75 feet apart
  • Always have a backup drain
  • You are in control of the project
  • Make sure submitted shop drawings reflect
    the tapered design that you want
  • Reject Non 4-way layouts if that is what you
    showed in your bid documents
  • Reject layouts that shrink the cricket widths
    shown in your bid documents
  • You have the power to make sure the most
    EFFECTIVE tapered design is submitted and
    installed

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Images and data provided by:
Firestone Building Products Company