Valley leaks
Where two roof slopes meet
Gutter guards stop leaves and debris filling the gutter, which matters because an overflowing gutter pushes water back under the shingle edge and down the fascia. They are not maintenance-free — fine debris still accumulates on top and needs clearing — but they turn a twice-yearly clearing job into an annual one and prevent the blockages that cause overflow in the first place. Quality varies enormously and the cheapest mesh types clog faster than no guard at all.
Dwight gets the full range — freeze-thaw cycling through winter, severe convective storms with hail and straight-line wind in spring and summer, and enough temperature swing between them to work every joint on the roof loose. Freeze-thaw is the quiet one: water finds a hairline gap in flashing, freezes overnight, expands, and opens it slightly wider, repeating through a Livingston County winter until a joint that was watertight in October is leaking by March. Spring brings the loud damage, and derechos have put straight-line wind through this region at speeds that take ridge caps and whole shingle courses. Housing stock here is older than average, which means a lot of roofs where the flashing has already been through several decades of that cycle.
Dwight has a population of about 4,032, and the housing stock here sets the pattern for what fails first on a roof.
No, and anyone saying so is overselling. Fine debris and pollen still accumulate on top and in the gutter beneath. They reduce the frequency substantially; they do not eliminate it.
Badly fitted ones can. Types that wedge under the first shingle course lift it and break the seal, which creates exactly the leak path you were trying to protect. Fitting matters more than the product.
Where two roof slopes meet
The capping along the roof peak
Concrete and clay tile
Rubber flat roofing
Lifted tabs and broken seals
Replacing a failed roof window
You will get a straight answer on whether Dwight needs someone out today or whether it can wait — before anyone quotes you for anything.
Call (706) 696-1888