I'm in the attic every so often to store empty boxes and I'm planning to do some wiring (non electrical) so I'm afraid that I might stand up and have nails through my head.

My plan isn't to cover the whole attic ceiling, just a small section of the attic ceiling. Any ideas on what I can do to cover the nail points?

I tried using a hammer to try to bend it but the nails are way too strong to do that.

  • 1
    I have a hole in my head from those nails... I was thinking rigid foam insulation, but I'd like to see some answers too. – JPhi1618 Dec 31 '15 at 21:47
  • @JPhi, Rigid foam insulation might lead to your roof deck holding onto water, or worse, condensation forming. In most cases the underside is left open so it can dry out. If you wanted to apply insulation, you'd need to vapor seal it or use something like a spray-foam. – ench Dec 31 '15 at 23:22

Leave a hardhat or bump helmet (lighter version of a hardhat) by the attic hatch. Put it on when you enter; take it off when you leave.

  • Yea I was thinking hard hat too – nhat Jan 1 '16 at 1:02

I stick a wine cork on each nail.

  • 1
    Your roofers were much more accurate than mine, or you have a newer house. The inside of my roof looks like a porcupine family got stuck up there. – ench Dec 31 '15 at 23:24
  • 6
    The OP better be a heavy drinker. – Tester101 Dec 31 '15 at 23:25
  • Or entertain a whole lot of friends that come over and drink up his wine. – Michael Karas Jan 1 '16 at 2:29

Thin (1/4") plywood or OSB across the bottom of the rafters would work well. Make sure that you don't prevent air from passing under the back of the roof. As long as you leave 2 feet open at the top and bottom of the plywood, and you don't fill the roofing cavity, you should be fine.


You can try using a tool called "end cutting nippers" like this one at


Cut the ends of the nails off close to the inside of the roof.

  • 2
    The problem with this approach is that your shingles can pull the tiny amount of remaining nail through and take flight. – Aloysius Defenestrate Jan 1 '16 at 19:30
  • No, it will not cause the shingles to "take flight". A roofing job properly done means no shiners. The roofer was too lazy/cheap to procure the proper length nails. – Jimmy Fix-it Jan 1 '16 at 21:12

I found a simple way to cover the nail points. Use small pieces of plastic tubing over each nail point. Depending on the size of nails, you may need one or two different tubing sizes. I used "Micro-Fuel Line" from Home Depot in two sizes: 1/4" OD/7/64" ID, and 3/16" OD/3/32" ID because I had two different nail sizes in my attic. A 10' length of each costs only $4.76. Cut the tubing into pieces about 3/8" to 1/2" long depending on length of exposed nails in your attic, then push a piece of tubing onto each nail point. No more nails in the head!

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