Why tear-off matters here
A lot of Fall River housing carries two shingle layers already, sometimes three on the older triple-deckers. Stacking a fourth layer on top is not allowed under state code and would not fix anything underneath anyway. Every replacement here starts with a full tear-off to the plywood or plank deck, because that is the only way to see what is actually wrong.
The tear-off is where the real story of the roof shows up: soft plywood at the eaves where ice sat for years, plank gaps that let old nails miss their mark, and water staining under a chimney that never had proper flashing. The estimate carries a deck allowance for exactly this reason, priced per sheet and only billed against what is actually replaced.
Materials for a coastal roof
GAF architectural shingle is the default recommendation, laid with six nails per shingle rather than the standard four, because Fall River sits in a higher wind zone than towns further inland and a four-nail pattern is a common reason tabs end up in the yard after a nor'easter. Ring-shank fasteners are used throughout, and stainless or hot-dipped galvanized nails are specified on any roof within a mile or two of Mount Hope Bay.
Ice and water barrier goes down on every eave to at least 24 inches past the interior wall line, in every valley, and around every penetration. Synthetic underlayment covers the rest of the deck instead of felt, which wrinkles when it gets wet overnight and telegraphs through the finished shingle.
Ventilation, done at the same time
Most of the older housing stock in Fall River was built with gable vents alone, which is not enough to keep the deck cold in winter or the attic cool in summer. A re-roof is the cheapest moment to fix that: cut a continuous ridge vent, confirm the soffit intake is open and baffled, and balance the two so the roof actually breathes.
On triple-deckers with finished top-floor ceilings and little attic space, ventilation gets more attention, not less, because there is less air volume to buffer a mistake. Where a true ridge-and-soffit system will not fit, edge vents or a powered option is discussed honestly rather than skipped.
Permits and the inspection
Fall River requires a building permit for a full roof replacement, and the inspector typically wants to see the ice barrier and the bare deck before the field shingle covers them. The permit is filed before the crew arrives, and the job is sequenced around that inspection visit rather than around convenience.
A typical single-family roof of 18 to 25 squares is a one-day tear-off and re-roof with a full crew. Triple-deckers with three flat or low-slope sections, or a house with three layers to strip, usually run two days. The yard is tarped and magnet-swept for nails before anyone leaves.