Specifications, Scope of work, Industry Standards, Arizona Workmanship Standards, Building Code, and All the Above


Specifications, Scope of work, Industry Standards, Arizona Workmanship Standards, Building Code, and All the Above


Specification Check list

In this article, we will discuss the differences between a job specification, scope of work, industry standards, Arizona workmanship standards, and the building code. Knowing the differences, similarities, and how each applies to your project will help you be a more efficient contractor.

It has been evident to me over the past few years as a roof consultant, that there is much misunderstanding when it comes to construction documents and how to use them. In this article, I hope to touch a little on;

  • Job Specifications
  • Scope of work
  • Industry-standard
  • Arizona Workmanship standards
  • Manufacturer instructions
  • Building code

Job Specifications
Pay attention to the word "specification" as in "specific." Written by an architect, roof consultant, and the manufacturer and it lays out the work in as much detail as possible.

Scope of Work
The contractor writes up and is a summary of the work to be completed; This often leaves out many details. Scope of work can be mistaken for a specification.

Industry Standard
There are two ways to understand "industry standards." One way is to look at from a national standard. Industry associations establish these standards. Then there's the local standard, which is what most of the local contractor's do. Which may or may not be in line with the national industry standards.

Arizona Workmanship standards
The Arizona Registrar of Contractors establishes these standards, and every licensed contractor is obligated to follow them. Its these standards the ROC will use when an owner files a complaint. If you are a contractor, you need to know the Arizona workmanship standards, for your trade.

Manufacturer's Installation Instructions
I'm sad to say not nearly enough contractors take the time to read the manufacturer's installation instructions. If you are one of those contractors, I encourage you to read and know the manufacturer's installation instructions.
The manufacturers spend large sums of money on testing and use data from numerous sources to compile the installation instructions. Do not do any job without reading the instructions.

Building Code
It may or may not be the law where you are working. If the city you are working in has adopted the building code, then it is law. The law is the law, so do your homework before starting any job.

All of the above
All of these things are the absolute minimum standards. The baseline for quality control, you should never go below. Your standards as a contractor should be much higher. If they are, then you won't need to worry about anything. Plus you'll be a mile ahead of so many contractors who barely meet the minimum standards.

Henry Staggs
Roof Consultant and Roofing Industry Advocate
(480) 265-1613

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