Measure the roof edges and determine gutter lengths
Gather materials: gutters, downspouts, brackets, end caps, connectors, screws, sealant, and tools
Mark the gutter slope toward the downspouts
Install fascia brackets or hangers along the marked line
Cut gutters to length as needed
Attach end caps and connectors
Mount the gutter sections to the brackets
Cut openings for downspouts
Attach downspout outlets to the gutter
Assemble and secure the downspouts to the wall
Seal all joints and seams with gutter sealant
Test the system with water to check flow and leaks
Adjust slope, tighten fasteners, and reseal if needed