Seamless gutters usually take around a day to install - they are a popular choice because they are leakproof and are more resistant to freezing, contraction and strong winds. These types of gutters are usually made from aluminum, but they can also be made from copper.
Found CK Roofing on Home Stars, they were the lowest quote but that is not why I went with them. It was how they discribed how they would do the job. They delivered on their promises.
Excellent workmanship. Definitely recommend them....