I sealed three driveways last season where none of the three had been sealed before. I worked from 55 gallon barrels and applied the sealer with a squeegee on all three driveways. One single coat was applied to all three drives with a squeegee tool. The recomended amount of sand was used in the sealer. The first driveway was a 3700 sq ft area and it was on a hill and i was short five gallons of sealer. The second drive was a little over 5900 sq ft area and i had ten gallons of sealer left over. The third drive was 5000 sq ft area and i had five maybe six gallons of sealer left over. Being as though these were my first three jobs i think i did pretty good at estimating the amount of sealer needed for the square foot areas. An individual who has been in the sealing business for several years told me to always use a squeegee on driveways that have never been sealed. Most of the driveways ive given estimates for have never been sealed. If i understand correctly there are two types of sqeegees a "common type squeegee" and a "sand type squeegee". I used a common type squeegee on all three drive ways. There is also a method of applying sealer with a broom or a brush type tool. What is the difference between the three tools and under what situations would one tool work better than the other? Another question: I have never sealed a drive way that had been previously sealed. What if i were to go back and reseal these drives at a later date with the exact same sealer to water ratio mix. I am thinking i would use approximately two thirds the amount of sealer that was used on the first initial sealing of the driveway. Would i happen to be close with the two thirds amount?