What to Expect on the Day of Your Roof Installation (Hour by Hour)

Roof install day is a lot. Big trucks arrive before dawn, hammers pound for 8 hours, and your yard looks like a construction site. Knowing what to expect hour by hour makes the day less chaotic and helps you catch issues while the crew is still there to fix them.

Here is the typical timeline for a standard asphalt shingle tear-off and replace on a 2,000-square-foot home.

The day before: material drop

Most contractors stage materials 1 to 2 days before install. A crane truck delivers shingle bundles directly onto the roof ridge, where they wait for the crew. Other materials (underlayment, nails, flashing) are staged in the driveway.

What you will see:

• Pallet of shingle bundles on the roof
• Rolls of underlayment on your driveway or porch
• A dumpster parked at the end of your driveway
• A portable toilet if the job is 2+ days

This is your last chance to check the materials. Walk around the dumpster and confirm:

1. Shingles are the exact brand, line, and color you selected
2. Underlayment is synthetic, not 15# felt (unless that was your choice)
3. There is a bundle of ice and water shield if your contract included it

If anything is wrong, call your contractor before the crew starts.

6:30 to 7:30 AM: crew arrival and setup

The crew usually arrives between 6:30 and 7:30 AM. A typical residential crew is 4 to 8 roofers plus a foreman. First order of business:

1. Tarping the landscaping around the perimeter of the house to catch debris
2. Covering the AC condenser, grills, and outdoor furniture
3. Setting up ladders at 2 to 4 positions around the roof
4. Running extension cords for air compressors and nail guns
5. Introducing the foreman to the homeowner

This is the time to ask:

• Who is the foreman? What is their cell number?
• Where should I park if I need to leave?
• Is the driveway OK to use or should I plan for a blocked driveway all day?
• Do you need access to a garden hose or outlet?
• What time will the job finish today?

7:30 to 10:00 AM: tear-off

Tear-off is loud and messy. The crew strips the old shingles and underlayment down to the decking, usually working slope by slope. Old material goes straight into the dumpster via shingle-fork or shovel.

What you will hear:

• Ripping and scraping from shovels
• Thuds as bundles of torn-off shingles hit the dumpster
• Air compressors running (these stay on all day)
• Crew shouting between slopes and ground

Noise inside the house: severe. Plan to leave the house, work from a coffee shop, or wear noise-canceling headphones. Pets should be boarded or in a closed back room with white noise.

10:00 to 11:00 AM: decking inspection and repair

Once the old roof is off, the foreman walks the decking and marks any rotted, soft, or damaged plywood sheets with spray paint or chalk. Damaged sheets are cut out and replaced with new 4x8 OSB or plywood.

This is the one part of the job that can swing the final price. Your contract should have listed a decking allowance (e.g., "up to 4 sheets included, $85 per sheet over"). The foreman should take photos of any damage and share them with you before replacement.

Expected sheets replaced on a healthy roof: 0 to 2. On a roof with prior leaks: 3 to 10. On a severely neglected roof: 10+.

11:00 to 1:00 PM: underlayment and ice-and-water shield

With clean decking, the crew installs:

1. Ice and water shield in valleys, around penetrations, and 6 feet up from eaves in cold-climate codes
2. Synthetic underlayment across the rest of the roof, overlapping the ice and water shield
3. Drip edge along the eaves and rakes, nailed through the underlayment at the bottom and over the underlayment at the top
4. New pipe boots and vent flashings

This layer is invisible once the shingles are on but it determines whether the roof leaks in 10 years. Good contractors take their time here.

1:00 to 5:00 PM: shingle installation

The crew starts at the bottom corner and works up the roof, installing:

1. Starter strip along the eaves
2. Field shingles in a staggered pattern, working toward the ridge
3. New step flashing along walls and dormers
4. Ridge cap shingles along the peaks
5. Ridge vent if your roof has one

Shingle installation is the loudest part of the day because of nail guns. Each shingle gets 4 to 6 nails and a typical roof has 2,500 to 4,000 shingles.

Noise ends around 5:00 to 6:00 PM when the last ridge cap goes in.

5:00 to 6:00 PM: cleanup and walkthrough

Cleanup is the step most homeowners wish they had paid more attention to. A thorough crew:

1. Sweeps and blows off the roof
2. Removes all tarps from landscaping
3. Magnet-sweeps the entire yard, driveway, and sidewalks for nails
4. Walks the yard once more on foot
5. Picks up any loose shingle debris
6. Hauls the dumpster away within 24 to 48 hours

Before the foreman leaves, do the final walkthrough together:

• Walk the exterior and check for damage to gutters, siding, windows, and landscaping
• Check that all downspouts are reattached
• Verify the satellite dish or other rooftop equipment was reinstalled
• Walk the yard with a magnet if you have one
• Take photos of the finished roof from each slope

Write down any concerns and get the foreman's commitment on when they will be addressed. Do NOT release final payment until you are satisfied.

The next day: magnet sweep and inspection

Walk the yard, driveway, and sidewalks the next morning with a magnet wand or strong magnet. Crews miss nails. Tires, pets, and bare feet find them later.

Schedule the municipal final inspection if the contractor has not already. Most jurisdictions require a final inspection within 30 days of the permit date.

What to do before the crew arrives

Prep the day before:

1. Move cars out of the driveway and off the street in front of the house
2. Remove valuables from the attic (vibration can knock items off shelves)
3. Cover or move outdoor furniture
4. Disable the wireless driveway sensor if you have one
5. Arrange for pets to be elsewhere
6. Take fragile items off walls on the top floor
7. Tell neighbors

See our full prep checklist at preparing your home for roof replacement.

Timeline variations

• Single-day install (1,500 to 2,500 sqft): 6:30 AM to 6:00 PM, 1 day
• Two-day install (2,500 to 4,000 sqft or steep pitch): 6:30 AM to 6:00 PM, 2 days
• Three-day install (4,000+ sqft, steep pitch, or tile/slate): 3 days, sometimes 4
• Rain delay: Crew will tarp any exposed decking and return when dry. Plan for scheduling flex.

FAQ

Q: Can I stay in the house during the install?
A: Yes, but the noise is intense. Plan to be gone for at least the tear-off portion (usually 7:30 AM to 10 AM).

Q: What if it rains during the job?
A: The crew tarps any exposed decking and stops work until dry. Contracts should have a "weather delay" clause that does not penalize either party.

Q: Will my ceilings or drywall crack from the vibration?
A: Rarely but occasionally. Hairline cracks in corners and around light fixtures on the top floor are the most common. Take photos of your interior before the job so you can document any changes.