When working with metal decking, it’s important to know the difference between a corrugated metal roofing deck and floor deck. They may seem similar in style but are actually two completely different things. We took a brief look at the differences between the two in another post of ours, but here we will take a deeper look into the differences, similarities, and purposes these two serve. 


What is a floor deck?

A floor deck, also known as a composite metal deck, is a ribbed metal sheet that is specifically designed to support concrete. It contains divots in the metal that hold embossments which gives the concrete something to grab on to. The metal floor deck is only used to support concrete on a floor deck. When pouring the concrete onto the metal decking, it’s easier to get level ground and makes the concrete less likely to crack. Using metal floor decking also gives the ability to pour out a larger deck due to the support it gives. 


What is a roof deck?

A roof deck is a smooth sheet of metal that is not meant for concrete. It doesn’t contain any embossments on it, so it us unable to give the same support as a floor deck can. It still has the divots that you see in a floor deck. Main uses for a roof deck are for roofing on commercial buildings, but it can also be used for siding, fencing, dumpster covers, or even platforms. 


Comparisons Between a Corrugated Metal Floor Deck and a Roof Deck

A floor deck is used solely for laying concrete as support, while a roof deck doesn’t have the ability to provide that support. A floor deck only has 1 sole purpose, and a roof deck can be used for many different things. Similarities these two have is that they are both made of the same materials, are lightweight, and designed in the same manner besides the embossing. 


Although these two products look almost identical and have similar names, you can see that they are very much different. They hold different purposes and mixing them up can lead to a drastic ending.