How to prevent nail punctures on roofing and demo jobs
Most tear-off flats come from nails dropped where the trailer and trucks park. Sweep the driveway and street with a magnet before and after every work day, stage the trailer outside the drop zone, and check the tires before you pull out. Industry guidance allows a repair only for punctures up to 1/4 inch in the tread, using a plug and a patch together.
Key takeaways
- Magnet-sweep the staging area before the trailer arrives and again before it leaves.
- Park the trailer outside the drop zone; chute or tarp debris into it.
- Repairable: punctures up to 1/4 inch (6 mm), tread only, plug plus patch.
- Never repair sidewall or shoulder damage, or use a plug alone.
- Text us a photo before you drive on a low tire; the Road-Ready Guarantee covers pickup condition.
Where do the nails that flatten tires come from?
Most nails that flatten tires fall where the trailer is backed in, where the crew walks and where the debris slides off the roof.
A tear-off sends thousands of roofing nails down with the shingles, and plenty of them miss the trailer. Demo jobs add framing nails, drywall screws and staples. The tire damage usually happens on the way out, when a loaded trailer rolls over nails that weren't there when it backed in.
A loaded 7x14 can carry close to 9,820 lb of payload, so a nail under a tire at that weight goes straight in.
Demo jobs are just as bad. Deck tear-outs, kitchen gut jobs and shed removals all leave fasteners in the grass and gravel around the trailer, and those are harder to spot than nails on a driveway.
How should I stage the trailer to keep nails out of the tires?
Set the trailer up so debris drops into it, not around it, and so the tires never cross the drop zone.
- Sweep first. Run a rolling magnet over the driveway, apron and street lane before the trailer arrives.
- Back in once. Position the trailer under the eave or chute, then don't move it until it's full.
- Cover the gap. Lay tarps or plywood between the house and the trailer so missed debris lands on something you can lift.
- Keep trucks off the drop zone. Park crew trucks on the far side of the trailer or on the street.
- Sweep the exit path. Before the loaded trailer pulls out, sweep the path its tires will roll over.
- Sweep again at day's end. The homeowner's tires (and the neighbors') matter too.
In Howard County, commercial vehicles can sit on residential streets for only 6 hours (Code § 21.232), so stage in the driveway when you can. That's also easier to sweep than a street lane.
Roof tear-off this week?
About 18 squares per 7x14 load, weekly on account, and Roof Day bundles for crews.
See roofer optionsCan a trailer tire with a nail be repaired?
Sometimes. A puncture can be repaired only if it's in the tread, no larger than 1/4 inch, and fixed with a plug and a patch together.
The U.S. Tire Manufacturers Association's repair guidance sets these limits for passenger and light truck tires:
| Situation | Repairable? |
|---|---|
| Nail in the tread, hole 1/4 inch (6 mm) or less | Yes, with a plug plus an inner patch, done with the tire off the wheel |
| Damage in the shoulder or sidewall, or angled into the shoulder | No, replace the tire |
| Hole larger than 1/4 inch | No |
| Plug only, from the outside | Not an acceptable repair |
| New repair overlapping an old one | No |
| Tire already has an improper repair | No, scrap it |
Those limits are written for passenger and light truck tires. Trailer tires can carry their own manufacturer limits, so the tire shop has the final say. On a rental, don't repair it yourself. Text us first.
What should I do if I find a nail in a rental trailer tire?
Leave the nail in, stop somewhere safe and text us a photo of the tire and the nail at (443) 766-0027.
A nail often plugs its own hole for a while. Pulling it on the job site turns a slow leak into a flat. Don't drive on a tire that's visibly low; a loaded dump trailer on a flat can damage the wheel and the tire next to it. Every unit has a spare; ask for it at pickup and we'll send it with you, or text us and we'll walk you through next steps.
When you pick up any unit, the Road-Ready Guarantee applies: we run a 10-point check and text you photos, and if it fails at pickup, we swap it or refund you. Those photos also show what the tires looked like before your job. Our policies page explains how damage is handled. There's a $250 card hold ($500 for machines), released within 24 hours after check-in, and you get an itemized notice with photos before any charge. We treat a nail puncture as normal wear and tear, so you won't be billed for one. Sidewall cuts, curb damage and running on a flat are still damage.
If a tire goes flat on the road, get fully off the travel lane before you stop, and don't try to limp a loaded trailer to the landfill. Your vehicle's manufacturer ratings and manual always win.
Which tools are worth carrying on every tear-off?
A rolling magnet, tarps and a tire gauge cost far less than one service call.
- Rolling magnetic sweeper: for the driveway, the apron and the street lane.
- Hand magnet: for flower beds and gravel where a roller won't go.
- Heavy tarps or plywood sheets: to cover the landing zone between the house and the trailer.
- Tire pressure gauge: check cold pressure against the tire sidewall before you leave the yard and before you leave the job.
- Flashlight: to inspect the tread on all four trailer tires before the loaded trip.
If the crew would rather stay on the roof, use Return It Loaded. We dump the trailer for the scale price plus $49 ($51.94 with tax). Roofers can open an account on the roofer page.
Does trailer size change the puncture risk?
A trailer that's too small means extra trips across the debris zone, and every trip is another chance to pick up a nail.
A 7x14 holds about 18 squares of single-layer tear-off, and a 6x12 about 11. On a 30-square roof, that's 2 trips in a 7x14 versus 3 in a 6x12. See our guide to dump trailer loads for a roof to size yours.
Questions
Are trailer tires different from truck tires?
They can be. Read the sidewall: it lists the tire's load rating and maximum cold pressure. Check pressure cold, before you leave the yard.
Will a magnet pick up staples and screws?
Steel ones, yes. Aluminum and many stainless fasteners won't stick, so walk the drop zone by eye as well.
Can I just use tire sealant?
Not on a rental. Sealant can hide damage and complicate a proper repair. Text us instead.