How many stray nails are too many after a roof replacement?
That question surfaced in Reddit's r/Roofing forum after a homeowner said a post-job sweep of the yard turned up a pile of them, including many in flower beds.
Missed roofing nails can pose a risk to bare feet, pets, lawn equipment, and car tires, which is why cleanup can shape how homeowners judge an otherwise solid job.
Here's what to know
The question came from a homeowner who said they did their own magnetic pass after a roof replacement and collected a noticeable number of nails.
"Around 50% was in flower beds, the rest just in grass around the house," the homeowner wrote. "[...] I think it's a bit much in my case."
Commenters noted that cleanup happens against the backdrop of a huge number of fasteners.
TCD Picks » Quince Spotlight
💡These best-sellers from Quince deliver affordable, sustainable luxury for all
"There can be as many as 400 nails used per square," one person said.
Another estimated that, depending on the home, a crew may remove "10k-15k nails" and install another "10k-15k nails back in."
Several roofers still said the homeowner's pile sounded beyond the usual few missed nails. One commenter called it "normal for half a** crew with no magnet," and a veteran roofer in the thread said customers often judge a job as much by the condition of the yard afterward as by the roof itself.
That same pro wrote, "After 3 decades in residential roofing, the rate of quality referrals are directly proportional to how clean and un-damaged the yard was left."
More background
Although the homeowner said the "roof job was well done" and chose not to complain, the cleanup issue was enough to make them ask what was normal. Other replies suggested the problem can last longer than many people expect.
"You'll be finding nails for the rest of the year," one commenter wrote.
Another said, "5 weeks after the roof was replaced I was still finding nails."
Nails can hide in mulch, grass, and landscaping, then resurface after yard work or rain.
"Nobody cares about your family safety more than you do," one commenter warned.
What can be done?
Do your own post-job sweep, especially in grass, driveways, and flower beds, where debris can collect. A magnetic sweeper can quickly catch metal, and several commenters said they consider it essential even after a crew has already cleaned up.
Ask contractors ahead of time what their cleanup process includes and whether they do a final magnetic pass before considering the job complete. If nails turn up afterward, one commenter said many companies will send someone back out for another sweep.
For some roofers, that risk is enough to justify extra cleanup beyond the initial job.
"Only in our industry can you be 99% effective and be considered 'unacceptable,'" one commenter wrote. "This is why I come back and sweep myself every job 4-7 days later."
Where can I learn more?
Homeowners run into plenty of similar frustrations after work is done. These stories cover questionable landscaping products, tree-health concerns, and cleanup choices around the yard.
• A homeowner digging through mulch found troubling material beneath the mulch and called it garbage.
• In a newly planted backyard tree, concerning signs in the bark pointed to serious stress.
• A local gardener found a massive plant au naturel in the wild, sparking debate over removal.
• A plant expert said fall yard maintenance should leave some garden debris in place.
Get TCD's free newsletters for easy tips, smart advice, and a chance to earn $5,000 toward home upgrades. To see more stories like this one, change your Google preferences here.
