Monthly Archives: November 2013

What Contractors Should Know When Buying Metal Roofing Coil

Contractors looking for a good deal on galvanized steel and aluminum roofing coil should always be careful—if it looks too good to be true then it probably isn’t.

There are some tools and “rules of thumb” for them to be sure they’re at least getting what they paid for.

Contractors order metal roofing coil by the square foot and most, in turn, charge their clients the same way.

So the number of square feet a coil is going to yield will dictate how much they are going to pay and how much they are going to earn.

There are a few unknowns in the process. Let’s use 24 gauge steel coil as our example. One coil of 24 gauge material can be different from another. That’s because industry standards permit “tolerances” in what constitutes a 24 gauge thickness. For example, we’ve know of one widely used “standard” that allows the thickness of 24 gauge galvanized steel to be anywhere from .0236 to .0316 inches thick. We know another one that only allows it to be from .0236 to .0296. A lot of contractors know this and realize that the yield of a coil may differ to some degree based on those tolerances. The only way to figure how many square feet the coil will accurately yield is to use a micrometer to measure the thickness of the material. And only a handful of large contractors and distributors have micrometers. Continue reading

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