A flooded basement is not a situation you want to get home to and you ought to take care of that before you get a real problem on your hands. 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. You will not be doing your bank account any justice when you are spending money on a contractor you are not sure can do the job to the standards you are expecting. Ask the contractors you are interviewing what they will give to make your time worthwhile. The response should demonstrate that the person is better than the other candidates.
You should expect great things from a person who is experienced in basement waterproofing compared to someone who has just handled a few projects. Do not think of it as a disrespect because it is this information that gives you an idea of the task you should assign. If you are approaching the experience world in terms of just time, you are doing it all wrong. You need to know the number of projects the person has handled and how the end result was. A person might have been in the field for long but have just a few projects on his back.
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. The services should come with a warranty because it is an assurance that you will not be throwing away your money only to have the same kind of a problem a few months later. The basement contractor should discuss the techniques he or she used in the project with you before moving ahead with the plans.