What Size Cordless Siding Nailer Do You Need?

What "size" means for a siding nailer

Siding nailers do not come in sizes the way a shirt does. When people ask what size they need, they usually mean three things: the nail length the tool can drive, how heavy and long the tool is, and how many nails the magazine holds.

Nail length matters most. It decides whether the tool can fasten your siding through the sheathing and into the framing. Weight and magazine size matter next, because they decide how tiring the day will be and how often you climb down to reload.

Before you shop, find out one more thing: whether you want battery power. Our best cordless siding nailer page found that every ranked product is air powered. If a hose is a dealbreaker, you will need to look for battery models elsewhere.

Match nail length to your wall

The nail has to pass through the siding, through any sheathing or foam board behind it, and bite into solid framing. Add up those layers, then choose a nail long enough to reach the framing with room to spare. Your siding maker's installation instructions and your local building code set the final requirement, so check them before you buy nails.

Here is a simple way to work it out:

• Measure the thickness of the siding where it will be nailed.
• Add the sheathing thickness, plus any foam or housewrap spacers behind the siding.
• Add enough extra length to grip the stud or framing firmly.
• Round up to the next nail length your tool accepts.
• Confirm the nailer takes that length in the collation type you plan to buy.

Nail length ranges in our data

The tools on our page accept nails from 1 in up to 3 in overall. Most of the coil siding models cover 1.25 in or 1.5 in up to 2.5 in, which suits many standard wall builds. The Metabo HPT NV75A5 reaches 3 in, the longest maximum among the 12 products on the page, but its range starts at 1.75 in.

If you only ever fasten thin siding to standard sheathing, a 1.5 in to 2.5 in tool is plenty. If you work with thick backing or want to fasten into denser framing, a model that tops out at 3 in gives you more room. If you use short nails often, check the minimum length too, since a tool that starts at 1.75 in will not drive a 1.5 in nail.

Weight, length and magazine size

Siding means holding the tool overhead and at arm's length, often from a ladder. Across our page, listed weights run from 4.08 lb to 8.47 lb. The Bostitch N66C-1 is the lightest at 4.08 lb. The Metabo HPT NV65AH2 weighs 4.8 lb and lists a 300-nail magazine, which is a balanced middle ground.

Body length can matter in tight spots. The meite CN65S is the longest tool in the table at 14.4 in, while the Metabo HPT NV75A5 is 10.69 in. A shorter tool is easier to fit between a ladder and the wall.

Magazine size sets how often you reload. Listed capacities on our page run from 120 to 400 nails, and the 400-nail model takes wire collation only. Some makers do not publish a capacity, so check before you buy if reloading often would bother you.

Check collation before you buy nails

A nailer is only useful with nails it accepts. Collation angle and nail type must match the tool. Some models take only 15° nails, and some take only wire coil. The Metabo HPT NV75A5 accepts 16° wire coil nails from 1-3/4 in to 3 in and 15° plastic coil nails from 1-3/4 in to 2-1/4 in.

The Metabo HPT NV65AH2 takes 16° wire coil siding nails from 1-1/2 in to 2-1/2 in, and 15° plastic coil nails from 1-1/2 in to 2-1/4 in. That means plastic collated nails may not reach a tool's full maximum length, so read the listing for your exact combination.

Also look for tool-free depth adjustment, a switch to choose sequential or contact firing, and a no-mar tip. Those features help you set nails flush without marring finished siding. If you want to compare other nailer types, see our best nailer page, and for trim work a best brad nailer cordless tool is a better fit than a siding nailer.

Safety before you start

Siding nailers are powerful tools. Wear safety glasses or goggles every time you fire one, and wear hearing protection, since compressed air tools are loud. Keep your free hand and your body clear of the nose of the tool.

Because these tools use compressed air, stay within the operating pressure the maker lists. Several models on our page list a range of 70 to 120 psi. Disconnect the air before you clear a jam or load nails. Set your ladder on firm, level ground, and never reach so far that you lose your balance while holding the tool.

If you do find a battery model, follow the same rules, and treat it as loaded whenever a nail strip is in the magazine.

Frequently asked questions

Is there a truly cordless siding nailer on your list?

No. Every product ranked on our best cordless siding nailer page is pneumatic and needs an air compressor and hose.

Can I use a framing nailer for siding?

Some tools are sold as both. The Metabo HPT NV75A5 is listed as a siding and framing coil nailer. Check the tool's nail range and the siding maker's instructions first.

Do I need a tool with a no-mar tip?

It helps if you work with finished or softer siding, because the tip guards against dents and scuffs. Several models in our data list one.

Should I pick a lighter nailer or a bigger magazine?

It depends on the job. A lighter tool is easier on your arm for overhead work, while a bigger magazine means fewer reloads on large walls.