Before hiring a plumber
The first thing you should do to find a good plumber is to ask family or friends for advice about professionals they have hired. Other good sources of reference are contractors, real estate agents and the local plumbing store. City government may even recommend a list of plumbers who are familiar with the codes in your area.
When requesting references, be sure to ask what type of work the plumber was hired for. Also, find out if the plumber specializes in residential or commercial work.
Questions to ask
When you have narrowed down the list, have two or three plumbers come to your home to evaluate the work and to give you a written budget that includes a list of materials. The contract should explain in detail the magnitude of the project, the items that are not included and the mode of payment. When you get the budget, one question you should not forget to ask is the type of materials that will be used. Remember, a faulty piece can cause damage to your home or turn your basement into a pool. I searched:
Not let the plumber install products made with cheap and inferior materials. Ask your plumber to install quality materials, from recognized brands that offer manufacturer’s warranty to the consumer. You may have to pay more, but then you will be happy to have done so if there is a problem or if any of the parts should be replaced.
Reliability and proven performance
Many homeowners who request the services of a plumber to replace a copper pipe that is leaking, unaware that there are alternative materials on the market. Why make the plumber make a repair with the same material that has already failed? Ask the plumbers you plan to hire if they use any of the alternatives proven superior to copper.
Business experience / references
Ask each plumber how long ago that is dedicated to the activity and if they have not personally recommended, ask them to name several people who can attest to the quality of their work and if he completed the work in the time established within the presented budget.
Check with your plumber if you will be responsible for obtaining all necessary permits.
Does the plumber offers a guarantee work? This is an important point if there are problems that need fixing after the initial installation.
Accidents can happen in almost all projects to improve housing. Therefore, ask your prospective candidate what steps will be taken to avoid injury or damage to property. A common problem when installing copper pipes is when the welding torch comes too close to the dry wall or to wooden beams in tight spaces. Non-metallic alternatives, such as CPVC pipes, are solvent-cemented (not welded), thus eliminating the risk of fire.
Ask the plumber how to leave the work area once the work is complete. You will not want to clean for hours after the plumber has left home. Also ask about disorders during the project. For example, if the plumber uses CPVC pipes, you should not worry about picking up metal / copper chips or oil spills on your carpets or floors.
Compare prices, but remember that the cheapest quote they offer does not necessarily mean the best job. It is possible that a skilled and experienced plumber charges more for the job, but ultimately, it can save you money if you do a good job with the best materials.