Gutters are an important part of the roofing system. Not only is it there to transfer rain water from the roof to the drains, they also prevent damage from taking the water away from the perimeter of the home. If the gutters get clogged up with debris, moss from the roof or grass, plants growing out they will not function properly. Leading to problems down the line of damage to internal and external walls.
To regular get the gutters emptied to enable free flowing rain water.