You might be tempted by the opportunity to save a little money, or maybe you just like the idea of getting your hands dirty and tackling a project head-on for yourself. Whatever reasons you might have for considering refinishing your floors as a DIY project, I am here to tell you that you'd better think twice before you pull the trigger on that plan. It's not as easy as it looks, and it could end up costing you a bundle of money or worse.
Then there is the matter of properly applying the new finish. This is another process that seems to be pretty simple on the surface, but is actually far more complicated than it appears. Uneven or improper brush strokes can lead to a patchy finish that simply looks horrible. Furthermore, you will most likely have to apply up to three coats to get the job done properly, effectively tripling your chances to make an error that can't be easily remedied. A professional has years of experience and a steady, measured hand on their side, not to mention insurance that will pay to fix the job if it goes south. If you screw up your own floor, you'll be left holding the bag on fixing the mistakes.
Finally, and most importantly, there is the issue of safety. There is a lot that can go horrifyingly wrong on a refinishing job. Those machines and chemicals are far from safe in the hands of a novice! It's quite easy to have a floor sander go rogue if you lose control, and it will tear up your floors or anything else that stands in its way until the power is cut.
Many of the chemicals that are used in the refinishing process are prone to combustion if not properly handled. If you don't know what you are doing, you could easily burn the whole house down. It's some pretty serious business.
If you consider the potential costs if any of these disasters occur, it's pretty easy to see that the cost of hiring a professional wood floor refinishing service is negligible in comparison. Better safe, than sorry!