Having a waterproofing company attend to your waterproofing needs is as important as having a mechanic attend to your car, the problem is that not all companies specialize in the type of waterproofing system that you have installed or want to install as each type of waterproofing is different and requires a different type of training.
The best you can do is be well informed about the solution you have or want and ask the right questions, find out as much information as possible about the system before you start contacting various companies and then ask pertinent questions to see how well equipped they are to handle your solution.
Most of the waterproofing companies in Cape Town offer additional services such as leak detection, plumbing and even construction; this is because most companies that offer the service of waterproofing are actually construction or plumbing companies and find that their clients prefer to deal with one company for a project. This does not mean that they are incapable of doing the waterproofing of your property; it simply means that they are not specializing in one field. Often a waterproofing contractor is the better choice if you want to maintain or repair a system that is already in place.