While it is not too common we receive calls from time to time asking for a free pressure washing estimates on areas with a low clearance. You probably do not have to worry about this is you live in a residential area but there are plenty of commercial areas that have height limits. Most people do not notice low clearance areas but nearly every parking garage we were ever asked to clean is no taller than 8 feet and most box trucks are no shorter than 10 and a half feet. This is why having a trailer is pretty much crucial if you need a parking garage pressure washed.