What is a roof replacement, and when does a roof need one?
A replacement takes the roof down to the deck and installs a new covering system. It is the right choice when repair would only move the problem around, which usually means failure across a whole slope rather than in a few spots.
Replacement is usually due when the covering has failed over a broad area, when the granules are gone and the shingles are curling or cracking across the roof, or when the deck has rotted in several places. A few isolated failures on an otherwise sound roof are usually a repair question, not a replacement question. See roof repair for when a repair is enough.
What moves the price up or down on a Worcester roof?
The price follows the roof and its access, not a published table. Pitch, roof area, the number of layers, the condition of the deck and the flashing needed all change the work, and this site publishes no price figures for any of them. The price is explained and approved by the homeowner before any work starts.
Roof size and pitch come first. The total area sets the quantity of material, and a steeper roof is harder to walk and to load.
Do I need a permit for a full roof replacement in Worcester?
Yes. A full replacement is building-permit work in Worcester, and the Department of Inspectional Services handles applications, which the city encourages filing online. The bigger question is who pulls the permit, because that answer affects the contract and the protections the homeowner keeps.
The city's building department requires permits for work that alters or repairs a structure under the state building code. A roof replacement falls clearly within that.
Is a written contract required, and what should it contain?
Massachusetts requires a written contract for residential work over $1,000 in labor and materials. It should give a detailed scope and materials list, the total price, a payment schedule with the date and amount of each payment, and a three-day cancellation notice.
The Attorney General's home improvement guide sets out the contents. The contract must carry a warning in 10-point bold type above the signature line: do not sign this contract if there are any blank spaces.
What happens to an old slate roof or a historic covering?
Slate and historic coverings are usually worth repairing, because the stone lasts much longer than the nails and flashing that hold it. The Park Service says that when roughly 20 percent of the slates on a slope are broken, cracked, missing or sliding, replacement is usually cheaper than individual repairs.
The Park Service recommends non-ferrous nails, copper or stainless, because plain steel and galvanized nails usually corrode well before the slate does. Rusting nails from the 1800s are a common cause of slate loss, so a slate repair often starts with the fastenings rather than the stone.