How Much Does Commercial Metal Decking Cost?

June 13, 2022 in Blog / Decking
metal deck price

If you’re ordering a quote for a commercial metal deck, the final price will be determined by a range of variables. For this reason, determining an exact metal deck price can be difficult. However, understanding the considerations that go into the price can help give an accurate project cost. Continue reading below to learn what those variables are and other relevant information.

Market Price of Steel

Steel prices often fluctuate, with heavy price changes happening in as little as a month. Since steel prices vary so quickly, you’ll want to act on any received quotes as soon as possible. If you have to postpone a metal deck project, you should get a new quote closer to your construction date. Otherwise, you risk being caught by surprise by higher costs than what was initially discussed.

Most commercial decks are created using Hot Dipped Galvanized Steel. The prices of this specific type of steel have been steadily rising over the last few years, thus making the costs of metal decks more expensive.

Steel Gauge

The steel decking material you plan to use for your project will also vary in price because each steel type has a different gauge. The “gauge” of a metal refers to its thickness, with thinner types obviously costing less than thicker ones. The higher the gauge of a metal type, the thinner it is.

If the cost of steel is high and you’d like to build a larger deck, using a thinner gauge can reduce costs. However, the gauges you can use will also depend on the required load-bearing capacity for your deck. Since lighter steel decks will support less weight, they may not be appropriate for certain projects. Standard steel gauges include 22 GA, 20 GA, 18 GA, and 16 GA.

The prices per square foot of each of these gauges can vary based on the general market price of steel, but their averages at current price levels are as follows:

GaugeWeight (lbs per square foot)Price (per square foot)


As you can see, using a thicker steel gauge for a larger deck can cost significantly more than using a thinner gauge. For example, building a 100-square-foot deck with 22 gauge steel would cost between $600 and $700 using the above averages. But, the same sized deck with 16 gauge steel would cost between $1,100 and $1,300. That’s a significant cost difference.

Size of Project

The most obvious consideration in your metal deck price is the size of your project. Once you’ve determined the previous factors, such as steel gauge and type, you can use the size to determine an accurate cost. Generally, there will be other materials necessary in these projects, so don’t forget to incorporate those costs into your overall price estimate, too.

Labor Costs

Another factor you’ll need to consider is labor costs, which vary significantly based on location and company. If you plan on applying the metal decking yourself, you won’t have to worry about labor costs. However, this project is usually best left to professionals since it requires intimate knowledge of safe, efficient metal construction practices.

If you’re a project manager or purchasing coordinator who plans to hire someone to apply the metal decking, it’s a good idea to shop around for the best companies and local prices.

Remember, it’s not always good to pick the cheapest company. You’ll also want to verify the company you hire is licensed, insured, experienced, and reliable. Read online reviews and don’t be afraid to ask for verification of licensing and insurance. Once you’ve vetted two or more companies, you can choose the best quote between them.

Metal Decking Type

There are two common forms of metal decking used in roof projects, called B Deck and N Deck. Less common forms of metal decking are A Deck and F Deck. For floor decking, common types include B-36 Formlock, W2-36 Formlock, and W3-36 Formlock. The type of metal decking used can affect the price of your materials.

Roof Decking Types

B Deck

B Deck is the most commonly used type and is primarily used to support a built-up roof system. You can find B Deck in gauges ranging from 22 to 16.

N Deck

N Deck is used for when you have a long span condition more than ten feet. You can find this type of metal decking in gauges ranging between 22 and 16.

A Deck/F Deck

A Deck is also called “narrow rib decking” because it has narrowing space. This is an older type of decking and the narrow ribbing makes it weaker than modern types. F Deck is also an older decking type, although it is slightly stronger than A Deck. You’ll usually find these decking type used in repair projects when trying to match the existing decking on older buildings.

Floor Decking Types

B-36 Formlock

This type of metal floor decking can accommodate slab thicknesses between 3.5 and seven inches. B-36 Formlock is most often used in short span conditions and can be found between 22 and 16 gauge.

W2-36 Formlock

This type of metal floor decking can accommodate slab thickness between four and eight inches. It can be found between 22 and 16 gauge.

W3-36 Formlock

This is the strongest type of metal floor decking and can support slab thicknesses between five and nine inches. Like other decking types, W3-36 Formlock comes between 22 and 16 gauge.

Get A Quote Today

Once you know your purchasing requirements, the best way to know your actual material costs is to get a free quote. Fill out our online contact form today to receive a free quote, or give us a call at 1-855-4INTSEL. We offer a range of options that can be customized to fit your project’s unique needs.