MLV Cap Nails, 1-inch, for Installation of Mass-Loaded Vinyl Noise Barriers, Small (250 pcs)

Used with heavy vinyl over insulation to soundproof what had been a doorway between rooms. Had no trouble putting drywall over the racks, which are easy to use. Then used green soundproofing sealant on the drywall. Definitely blocked the sound.

An essential complement for nailing mass-loaded vinyl. Such vinyl tears easily with any cut or penetration. These nails prevent heavy vinyl from tearing away from a wall by it own weight. Recommend as essential to working with and nailing mass-loaded vinyl to studs and walls.

My previous sound abatement projects used special drywall, green glue, mineral wool, and various types of acoustic panels. MLV was a new material for me, which inevitably led to me finding out the correct fasteners to use with it - that's where the UberQuiet MLV Cap Nails (1-inch, 250 pcs) came in. While I must admit that $18 (with $2 off coupon, at the time of this review) felt pretty expensive for nails, it's not like MLV is a cheap material in the first place. Plus, in the universe of airtight j-boxes and MLV, these cap nails are likely to be the least expensive part of the puzzle. In use, the cap nails take care of the issues that I was worried about with MLV as a construction material. MLV is heavy, so I was concerned about distributing the forces at the fasteners, and not having sag impact the integrity of the material over time. These cap nails work great, but you will use a ton of them (about every 6-8", per joist). They weren't visible through 5/8" drywall. Recommended

These were loud nails as I could hear them in the box before I even opened it. They did quiet down and do their job

They come in very useful

They bent easily when I was hammering them in. (I could also just be a bad hammerer) Some of them suffered broken Plastic if I hammered too hard. Biggest issue for me is that the green plastic sits slightly above the name head when hammered in, this creates contact with my wood flooring, this is only an issue if the plastic squeaks under the floor because of the tightly screwed flooring pressing against the plastic. I haven't heard any squeaking yet but the plastic does slightly raise my wood flooring from being flush with the surface of the sub flooring. But this is not a problem unless you absolutely need everything flush/flat or if you've made exact measurements and the head of the nail adds a millimeter or two to your project. I saw metal ones (without the plastic) im wondering if those are a better experience.

Worked great to hold up my 50 pound pieces of Mass Loaded Vinyl.

It was packaged well and arrived on time. Good quality too.