Warranties, which are promises
made to your customer about
your work, are of two types: express
and implied. An express warranty is
deliberate and intentional, and is made
orally or in writing. There is rarely any
doubt that you made a promise
because you typically say or write
something like, "This roof will not leak
for fifteen years." That's an express
warranty.
An implied warranty, however, grows
out of the work you did — it's "implied"
from the circumstances. You may not
even have been aware that you were
making a promise — it doesn't matter,
you made it anyway. For example, if
you installed an overhead garage door,
even though you may have been careful
to make no