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maintain the roof. Because the roof subcontractor may go out of business, the
government specification should require the General Contractor be responsible for the
Bonding may be appropriate for mission critical buildings. The signatures on the bond
must be between the Bonding Company and the Government User. A bond is an
insurance policy with a maximum monetary value. The holder of the bond will receive
the bond value in case of default, so it is important that the government be the agency
named on that bond. Bonds are typically for one or five years. Bonding may be an
issue for some contractors because it reduces their bonding capacity for those five
The warranty wording should be carefully reviewed during the shop drawing review.
The final Contractor's warranty wording should be compared to the requirements
included in the contract specification.
Roof Manufacturer's Warranty.
The wording of the roof manufacturer's warranty should be carefully reviewed. The
Roofing Materials Guide published each year by NRCA is a good source of information
on what different manufacturers offer in manufacturer warranties. Key elements to
review are listed below:
Qualified Installer. Many manufacturers' warranties are available ONLY
if a certified contractor is used to install the material.
Length of Warranty. Verify that the length of warranty matches the
contract specification. Verify that the warranty value is not prorated over the warranty
Exclusions. Exclusions can reduce the value of the warranty to user
AND prevent normal legal options to enforce standard construction rights. Some
typically exclusions include the following:
Legal. Note that the term "sole and exclusive remedy" often takes away
other legal rights.
Technical. Technical exclusion should be carefully reviewed. As an
example, excluding wind coverage for commonly occurring wind speeds should not be