Can I use a staple gun for insulation?

Author: scraper  |  Last update: Saturday, September 26, 2026

Yes, a staple gun is the standard tool for securing insulation. It is primarily used for faced insulation (the kind with a paper or foil flange), where the staples anchor the flange to the wooden studs or joists.

What kind of staple gun do you use for insulation?

Hammer staple guns are perfect for holding the insulation in place. You can attach several materials to your wall frame, including plywood and house wrap. The wonderful thing is these staples are long-lasting and easy to use. Stapling the insulation will be quick, easy, and efficient.

What size staples do you use to staple insulation?

For standard fiberglass or mineral wool batt insulation, use 𝟑/𝟖 to 𝟏/𝟐-inch staples. These lengths are long enough to securely grab the wood framing without puncturing through. Use corrosion-resistant 1919𝟏𝟗 to 2020𝟐𝟎-gauge heavy-duty staples (like the ubiquitous T50 size) to prevent the paper or plastic flanges from tearing over time.

What tool is used to staple insulation?

An insulation stapler is a specialized heavy-duty staple gun designed to fasten fiberglass batts, vapor barriers, and housewrap without tearing the delicate paper or foil facings. The most common choices are manual hammer tackers for quick wall coverage, or wide-crown staplers for precise, flush fastening.

What staples are best for insulation?

For most fiberglass batt insulation projects, standard heavy-duty staples work best. Choose 20-gauge or 19-gauge galvanized steel staples with a 3/8-inch to 1/2-inch leg length. Popular, reliable options include Arrow T50 staples or Rapid 140/G flatwire staples.

Insulation Stapling Techniques

Should insulation be stapled?

Whether you need to staple insulation depends on the type of insulation and where it is being installed. Generally, you only need to staple faced insulation (insulation with a paper or foil flap, known as a flange). Unfaced insulation stays up through friction and pressure.

Can 40 pages be stapled?

How many sheets of paper you can staple at once depends on more than just the stapler. Standard office models handle between 10 to 20 pages, but heavier stacks require stronger tools. The staple itself plays a key role.

Is it okay to touch insulation with your bare hands?

While it may appear harmless to the naked eye, it actually contains thousands upon thousands of small shards of glass and sand that can make their way onto your skin, eyes or even inside your lungs. If you've ever touched fiberglass insulation with your bare hands, you're probably well aware of its effect on the skin.

Does it matter if insulation is faced or unfaced?

Yes, faced or unfaced insulation matters significantly depending on your climate, local building codes, and the specific location you are insulating. The facing acts as a vapor barrier (or retarder) to prevent moisture from condensing inside your walls.

Are T50 staples good for insulation?

T50 staples are the world's best-selling heavy duty staple platform. Made to deliver exceptional holding power, these staples are used for all heavy duty stapling applications from installing insulation, housewraps, and roofing underlayments to upholstering fine furniture and window treatments.

What does T50 mean on staples?

In the context of staples, "T50" refers to a specific size and type of staple used in staple guns or heavy-duty staplers. T50 staples are often used for tasks requiring robust fastening, such as upholstery, carpentry, or construction projects.

How long do staples need to be for insulation?

Use a Bostitch, Arrow or similar manual staple gun and 1/4", 5/16" or 3/8" staples, using enough staples to hold the insulation firmly in place and avoid gaps and fishmouths. Insulating Cathedral Ceilings: Ceiling insulation provides essential sound control between floors in your home.

How many staples per insulation batt?

Staple the Tabs: Use your staple gun to attach the tabs to the wooden joists. Start at one end and work your way to the other, stapling every 6 to 8 inches. Avoid Gaps: Make sure the insulation fits tightly against the joists without gaps or sagging, which can reduce its effectiveness.

What size staples for stapling insulation?

For standard fiberglass or mineral wool batt insulation, use 𝟑/𝟖 to 𝟏/𝟐-inch staples. These lengths are long enough to securely grab the wood framing without puncturing through. Use corrosion-resistant 1919𝟏𝟗 to 2020𝟐𝟎-gauge heavy-duty staples (like the ubiquitous T50 size) to prevent the paper or plastic flanges from tearing over time.

Will T50 staples go through wood?

Yes, T50 staples can easily go through softer woods (like pine or cedar) and plywood. However, their ability to fully penetrate depends on the hardness of the wood and the power of your staple gun.

What are 20-gauge staples used for?

Fine wire staples range from 20-22 gauge. These staples are ideal for upholstery projects, cabinets, fine wood trim, batten strips, picture frame fitting, wood baskets, plastic parts, molding and furniture assembly.

← Previous article
Why is my door sticking at the bottom?
Next article →
Do baseboard heaters need to be on an exterior wall?