Which of these is a requirement for gutter installation?

The requirement for gutter installation that involves spiking them through the fascia is a common practice to ensure that the gutters are securely attached to the building. This method provides stability and alignment, which is crucial for proper drainage. When gutters are effectively spiked into the fascia, it allows them to withstand the weight of water and debris, thereby reducing the risk of sagging or detachment over time. Proper fastening is essential to maintain the integrity of the gutter system, especially during heavy rainfall or snowfall.

The other methods mentioned, such as using only glue or installing them without fasteners, are typically not recommended because they do not provide the necessary security for the gutters. Glue alone may not hold the gutters in place under the stress of weather conditions, and installation without fasteners poses a significant risk of the gutters becoming loose and ineffective. While other fastening methods may exist, using spikes to secure gutters through the fascia is one of the most widely accepted and standard practices.