Cleanup, Nail Sweep and the Final Walkthrough
The last hour of a roofing job determines how you remember the whole thing. A roof installed well and cleaned up badly feels like a bad job, and the final walkthrough is your one moment of leverage, it happens before the final payment.
Here is what good cleanup actually involves, and what to check before you sign anything off.
The nail problem
A tear-off releases thousands of old nails. Most go into the dumpster, some go over the edge into your beds and lawn, and a few end up in places nobody expects. Nails are the single most common post-job complaint and the one with real consequences: a nail in a tire, a bare foot, or a dog’s paw.
A magnetic rolling sweep of the driveway, paths and lawn is standard and should not need requesting. What is worth knowing is where it does not work well:
- Gravel drives. A magnet drags gravel and misses nails sitting below the surface. These need multiple passes from different directions, and even then a hand check is worthwhile.
- Thick or long grass. Nails settle down into the sward below magnet range. Mow shorter before the job if you can, and ask for a second pass.
- Planting beds and mulch. A magnet skims the surface. Bark mulch in particular swallows nails.
- Under decking and in gaps. Anywhere a magnet cannot physically reach.
- The neighbors. If your roof edge is close to a boundary, debris crosses it. Worth mentioning to the crew and worth a look yourself.
Walk the perimeter yourself the following morning in good light, particularly if children or dogs use the garden. Low sun picks out metal that midday light hides. Finding two nails is normal; finding twenty means asking for another sweep.
Gutters, the most commonly skipped item
Tear-off debris ends up in the gutters, and granules from the new shingles wash into them for weeks afterwards. Gutters full of granule and shingle fragments block downspouts, and the first heavy rain then overflows against your foundation.
Gutters should be cleared as part of completion. Check them, or at least run a hose into one and confirm the downspout discharges properly.
The walkthrough checklist
Do this with the crew leader present, before final payment:
Ground level
- Driveway, paths and lawn swept, with extra attention to gravel and long grass.
- Dumpster removed, and the ground beneath it checked, dumpsters mark driveways and kill grass.
- Beds and shrubs inspected for damage and debris, tarps removed.
- Gutters and downspouts clear, downspouts still properly attached.
- Siding checked for scuffs or dents from ladders and falling debris.
- Air conditioning units and meters clear of debris.
- No leftover materials, wrappers or offcuts.
Looking up
- Ridge line straight and cap consistent, see starter strip and ridge cap.
- Shingle courses running level, no obvious waves or bulges.
- Flashing at chimney, walls and skylights looks new rather than reused.
- Drip edge visible at eaves and rakes.
- Vents sitting flat and properly flashed.
- Valleys clean and consistent.
- Any satellite dish or hardware reinstated as agreed, see satellite dish and solar panel roof leaks.
Inside
- Attic checked for daylight, debris and dust on stored items.
- Ceilings checked for new cracks from vibration.
- Pictures and shelf items put back, a good crew will not have moved them, which is why you moved them beforehand. See what to move before a roof replacement.
Paperwork
- Final invoice matching the agreed scope, with any change orders documented and previously approved.
- Warranty certificate issued, and manufacturer warranty registered, see warranty registration.
- Permit closed and final inspection passed where required.
- Lien waivers where applicable, see red flags in a roofing contract.
- Photographs of the completed work, and of anything unusual found during tear-off.
The first rain, and the first winter
Two follow-up checks worth diarising. After the first heavy rain, look at the ceilings and go into the attic. After the first freeze in colder markets, look along the ridge and valleys for cracked cap.
Both are far easier to raise within the first months, while the job is fresh and the relationship is current, than a year later. A reputable contractor would rather hear about it early.
If something is not right
Raise it during the walkthrough, in front of the crew leader, and get the resolution in writing before making final payment. This is not adversarial: most issues are minor and get sorted the same day. But the moment before final payment is the moment when everyone is motivated, and it does not come back.
Our roof replacement process includes a walkthrough as standard, and our warranty pages set out what happens afterwards. If you want to know what to expect on the day itself, how long does a roof replacement take covers the schedule.
Cleanup and walkthrough questions
A magnetic rolling sweep of driveway, paths and lawn is standard. Gravel drives, long grass and mulched beds need extra passes because a magnet skims the surface and misses nails below it. Walk the perimeter yourself the next morning in low light.
Yes, and it is the most commonly skipped item. Tear-off debris and granules from the new shingles collect in gutters and block downspouts, so the first heavy rain overflows against the foundation. Check them or run a hose through before signing off.
Nail sweep quality, gutters clear, dumpster area, beds and siding undamaged, ridge line and courses straight, new flashing rather than reused, drip edge present, attic clear of debris, and the paperwork: invoice, warranty registration, closed permit and lien waivers.
A good crew will not have moved your belongings at all, which is why moving pictures and shelf items beforehand matters. The work happens outside, so nothing indoors should need handling by anyone but you.
After the first heavy rain, check ceilings and go into the attic. After the first freeze in colder markets, look along the ridge and valleys for cracked cap. Both are much easier to raise in the first few months than a year later.
Contact the contractor straight away and put it in writing. Most issues are minor and get resolved quickly. Raising something during the walkthrough before final payment is easiest, which is why the walkthrough matters, but a reputable contractor would still rather hear about it early than late.