Here is the difference between sectional and seamless gutters.
Sectional types of gutters are sold in 10ft. – 22ft. long pieces, and are either made of vinyl, painted aluminum or pre-painted steel. Gutter sectionals are joined together by snap-in-place connectors.
All sectional systems have end caps, corner pieces and drop outlets for connecting to downspouts. A problem that arises with sectional systems is the potential for leaks through the seams.
Gutter add-ons, such as screens and filters, can help basic rain gutters stay clog-free, especially by keeping debris and animals out of them. A gutter cover allows water to flow along a contoured “lip” which feeds into your rain gutter.
Seamless gutters are the most popular type on the market. The biggest selling point is that they don’t have seams which are potential sources of water leakage. The sections join only at inside and outside corners and at downspout outlets.
Seamless gutters provide a no-clog system which catches and routes water down and out while diverting leaves and debris to the ground. These gutters are also a popular choice due to their durability, seamless appearance, and easy maintenance.
Seamless gutters are usually formed from aluminum with a baked-on finish, but can also be formed from copper or factory-painted steel. Seamless gutters are made with a special machine that is brought to your home by a gutter contractor.
Since old, damaged or defected rain gutters can cause a lot of damage, it is important to repair or replace them. Gutter clogs which cannot divert water properly can cause wood rot, foundation problems, and landscaping erosion.
In addition to damaging your home, a rain gutter clogged with soggy leaves and debris is a breeding ground for mold and mildew. Mosquitoes and other pests also become problems when gutters clog.