What a metal roof installation involves, step by step
Most residential jobs follow the same order. Knowing it helps you read a quote and spot what's missing from it.
- Measure and inspect. The installer measures every roof plane, checks the pitch, counts valleys, dormers, chimneys, skylights and vents, and looks at the deck from the attic.
- Tear-off or recover, then deck repair. Old shingles come off down to the sheathing, or the metal goes over a single layer if the roof qualifies. Soft or rotted decking gets replaced.
- Underlayment and ice barrier. Ice and water barrier along the eaves and in the valleys, synthetic underlayment over everything else.
- Trim, panels and flashing. Drip edge and eave trim first, then the panels, then flashing at valleys, sidewalls, chimneys and skylights.
- Ridge and snow guards. Ridge cap with closures or a vented ridge, then snow guards wherever sliding snow would land on something you care about.
Deck repair is the one line item nobody can price exactly until the shingles are off. Ask every installer how their quote handles it: a per-sheet price for replacement is common and keeps surprises small.
Tear-off or install over the old shingles?
A tear-off shows you the deck. On older homes around Saratoga Springs and Glens Falls, where a roof may have been patched a few times over the years, that's worth a lot: you find the soft spots, fix them, and start clean.
Going over shingles skips the debris and keeps the house closed up. It only makes sense with one layer of shingles, a flat and solid deck, and a town that allows it. We cover the details on the metal roof over shingles page. If an installer recommends a recover without going into the attic first, get another opinion.
Underlayment, ice barrier and flashing for upstate winters
Metal sheds snow, but the eaves on a poorly insulated house still get cold enough for ice dams to form. That's why the ice and water barrier along the eaves matters as much as the panels above it. It should also line the valleys and go around chimneys and skylights.
Flashing is where most leaks start. Ask whether the chimney gets new flashing or whether the old pieces get reused and caulked. On a brick chimney, new counter-flashing cut into the mortar joints is the job done properly.
Ventilation belongs in the same conversation. A metal roof over an attic with no intake at the soffits and no exhaust at the ridge can sweat on the underside. Ask how the installer plans to vent it; a vented ridge cap is common on standing seam.
Then plan for the snow. A metal roof can drop a winter's worth of snow onto a porch roof, a walkway or the car in one go. Snow guards go in during the install, above doors, decks, walkways and lower roofs. Adding them later costs more trips up the ladder.
How long installation takes, and scheduling around the weather
A simple gable roof on a ranch or cape is usually a matter of days. A Victorian with steep pitches, turrets and three chimneys takes longer, and so does a tear-off that turns up rotten sheathing. Panels for a standing seam metal roof are often cut to length for each run, which can mean waiting on an order before anyone climbs a ladder.
Weather sets the pace more than the crew does. Metal can go on in cold weather, but snow and ice on the roof stop work, and wind makes long panels hard to handle. A careful installer opens up only as much roof as they can dry in by the end of the day.
Spring and early summer book up first. Getting quotes over the winter puts you near the front of the line. For seasonal camps around Lake George and Lake Luzerne, tell the installer when the place gets closed up so the work can be scheduled while someone can still get in.
Permits for a metal roof in Saratoga County towns
Reroofing often needs a building permit, and each town and village handles it a little differently. Your installer or the town building department confirms what applies. Settle in writing who pulls the permit, who passes the inspection, and who pays for the dumpster.
Questions to ask a metal roof installer before you sign
- Tear-off or recover on my roof, and why?
- Which underlayment, and exactly where does the ice and water barrier go?
- Which panel profile, steel gauge and finish, and are the fasteners concealed or exposed?
- New flashing at the chimney, walls and skylights, or reused?
- What workmanship warranty do you offer, what does the panel finish warranty cover, and how is extra deck repair priced?
Good installers answer these without hedging. If you want to understand what moves the price before you call anyone, read our metal roof cost guide.