WHAT CAN YOU DO IF THE CONTRACTOR YOU HIRED USES CHEAP MATERIALS?
Selecting the right contractor is not an easy task, there risk of picking a bad one who does not do the work properly on your home. But another risk is selecting a contractor that maybe does the work correctly, but uses cheap materials in the process. In this case what shall you do? There are several options:
NOTIFY THE CONTRACTOR
First, you should notify the contractor right away before he installs the materials. Let him/her know that you do not feel comfortable with the materials being used, and that they are not on par with the standards of you and your property. Let the contractor know this is a working relationship and that using cheap materials to start the job will be an absolute disrespect to that relationship.
CHECK TO SEE IF THE MATERIALS ARE UP TO CODE AND HAVE WARRANTY
Before the contractor installs anything, make sure that the materials, cheap or not, are up to the current local standard codes. For example, if the contractor is a plumber changing draining lines, make sure that what the lines are made of (plastic/copper are typically accepted as opposed to galvanized iron, but best to check your local codes). Also make sure that the manufacturer of those materials still has a warranty on those specific brand/model of materials. IF they do not, halt the contractor from proceeding with those materials.
RENEGOTIATE THE CONTRACT
If the contractor insists on using those materials because the contract between you and the contractor states so. Go back to the contract drawing board. Do not be afraid to halt work, because it is better to deal with the issue before the materials are already installed, because after that it is much more costly!
Let the contractor know that you are willing to be more flexible with the price if the materials are better, or perhaps split the difference to get high quality materials.
SEEK DAMAGES FROM THE CONTRACTOR
If the contractor decides that he/she only wants to use those materials and nothing better, let them know that the contractor is liable for any issues that the cheap materials installed, and that you will hold the contractor accountable for future issues caused by the cheap materials. Also let the know that if it is a major issue caused by the materials placed, the homeowner insurance may consider that contractor liable for the damages, which could lead to a much bigger financial loss for the contractor than taking an extra hit on the materials.