Roofing in Fargo is an ice-dam conversation tied to the heating season. Warm air leaks into the attic, snow melts, and the eave freezes a ridge of ice that sends the next water under the shingles. You see it as a thick icicle line, a stain on the siding under the eave, and a ceiling mark in the room below. The field of the roof can look ordinary. The edge is where the heat loss shows. Look at the attic temperature before you only blame the sky.
Older roofs near the core and newer roofs on the south side both dam when the attic is warm and the eave is cold. Ventilation, a bath fan that ends in the attic, and thin insulation above the ceiling are part of the roof scope. Replacing shingles and leaving the heat path is how you buy the stain again. Wind on this flat city scours one slope and drifts another, so the dam is not always on the side you expect. Say which eave is icing.
The tear-off window is short. Do not wait until the deepest cold to discover the deck is soft under the eave. If you can schedule the work while the weather lets a crew dry the roof in, do it. A boot, a flashing tear, and a slope that has dammed for years are different scopes. Ask about underlayment and about soft boards at the edge. Metal still needs the eave detailed or the water simply finds a new way under the panel.
A leak that shows up on the first big thaw may be the dam, a lifted edge from wind, or both. Do not merge them into one shrug. Photograph the ice line and the interior stain. If a claim is open, keep the deductible separate from the scope. Attic bypasses around can lights and the furnace flue chase are famous in these houses. Mention them if you have already been up there and felt the heat.
Say the neighborhood, whether you have a dam, an active stain, or a covering that is done. Say if the attic is warm. The heating season will rebuild the ice if the heat path stays. Call the number on this page.