Gutters collect and transport water runoff to areas that don't interfere with the building's infrastructure or entryways. Three main types of gutters include half-round, k-style, and box gutters. Box gutters are especially popular for commercial buildings and flat-roofed buildings.

While a smaller commercial building might be able to get away with 5-inch box gutters, we generally recommend that you start by looking at the 6-inch sizes. This is because commercial buildings tend to have more water built up on them than residential buildings, meaning the gutters need to be larger.

In general terms, 5-inch gutters are meant for households while commercial buildings go for a 6-inch profile. Still, a steep roof may call for a 6-inch residential gutter to deal with the rain without putting a strain on the guttering system. Large apartment buildings can also benefit from a 6-inch gutter.

Industrial Guttering & Commercial Guttering Mainly used on farm buildings, warehouses and industrial units, these products are capable of carrying large volumes of water off of the roof. Plastic industrial gutter products are perfect for buildings with large roof areas.