When it comes to water in the house, it is only great if it stays in the pipes until you open them and when there is a problem especially with heavy rains or burst pipes, a flooded basement is a high possibility which is why you should take measures to prevent this before it finally happens. Using some clothes or boards to secure the basement door is not going to be of much help which is why you should get a contractor to do the job. With the right basement proofing techniques, the space will be free from moisture leakage which can cause a mold situation leaving your household exposed to fungal infections. To find the right contractor, make sure he or she has references you can check to see that he or she is able to do a great job. As far as your house and your finances are concerned, you should not be spending money on any professional unless you are sure the job output you will get from them is something you can live with. Let the contractor tell you why he or she thinks the job is the right fit for him. Ensure you are getting someone who knows what he or she is bringing to the table and how that will be beneficial to you.
You should expect great things from a person who is experienced in basement waterproofing compared to someone who has just handled a few projects. It is not disrespectful to ask about this because you will be able to know how much responsibility you should give the contractor. Do not just think in terms of years when you are inquiring about the experience level. It also means getting an idea of the basements the contractor has worked on and how many of them have been in a good shape ever since. Even people who have been doing the work for 5 years might not have the number of projects someone who has been working as a basement contractor for 2 years has to his name.
A license is necessary before you give the contractor the job. It is illegal to offer the services without a valid license and someone who is willing to break the law cannot be trusted. When you are paying for these services, you want your basement to be in order for a long time and you cannot be sure that this will be the case unless you ask for a warranty document of a guarantee from the person in question. Work with someone who is honest about the techniques that will be utilized in the basement waterproofing project so that you can get clarification beforehand and if you have concerns you can have them taken care of before the project is too far gone for you to do anything.