Do I need gutters at all on a roof like this?
A gutter is the part that takes rain and meltwater from the roof edge and carries it away from the wall and foundation. Without one, water falls straight down the face of the house, where it can stain the cladding and saturate the ground at the base.
On a house with a steep roof, the volume of water arriving at the eave is large in a storm, and it lands in one line along the wall.
In winter the gutter does a second job. Meltwater from a snow-covered roof runs to the eave, and if the gutter is blocked or sloped the wrong way, the water stands at the edge and freezes there.
How does a gutter contribute to an ice dam?
An ice dam forms when melt from heat escaping through the roof refreezes at the cold eave. A blocked or badly sloped gutter gives the melt nowhere to go, so the dam builds faster and holds more water behind it.
Three things are needed for an ice dam: snow, heat to melt it and cold to refreeze it. Heat from the attic warms the roof deck, and the melt runs down until it reaches the eave, where the overhang is cold and the water freezes.
A clean and sloped gutter does not stop the heat loss, and it does not replace air sealing or insulation. It does let the melt leave the roof edge before it refreezes, which lowers the risk at the eave.
What does a shorefront house need from its gutters?
A house on the water takes wind and rain together, and the fixings and metal joins take the strain. Hangers, spikes and the joins between sections are where a gutter tends to give way first.
The National Park Service's guidance on metals counsels matching or isolating the metals at each junction, and it favors non-ferrous fixings where the metal is exposed.
Wind off the Sound loads the gutter in a different way from snow. A gusting easterly can lift a section at its weakest hanger, and a downspout that flexes in the wind can pull at its join.
Why do some gutters fill with debris faster than others?
Debris collects where trees overhang the roof, where a roof has many planes that drain into the same run, and where the gutter has lost its slope. The amount that reaches the trough depends on the site as much as on the gutter itself.
Inland, under heavier tree cover, snow stays on the roof longer and melts over more days, which leaves more meltwater for the gutters to carry during a thaw. Heavy tree cover also drops more leaves and needles into the trough, and a trough full of debris cannot take the melt.
On a multifamily building or a house with several roof planes, the gutter collects water from more than one slope. The outlets on those runs have to be sized and placed so that one slope does not overwhelm another.
What moves the price of gutter work up or down?
The price depends on the length of run, the height of the eave, the condition of the fascia, the number of downspouts, and how easily a ladder or lift can reach the work. It is explained and approved on site before any work starts, and no figure is given here.
A short run on a single-storey eave, with sound fascia and good access, is a quick job. A long run on a tall house, or one with several roof planes and outlets, takes longer, especially if the fascia has to be repaired before the gutter can be reset.
What is found once the old gutter is off, such as soft fascia, rotted rafter ends or a corroded hanger that has damaged the board, is the usual reason a gutter job grows. A technician reports what was found and what it changes, and gets approval before the next step.