What Is a Square of Siding or a Square of Roofing?

Many homeowners may wonder what a square of siding or roofing is. When in the market for new siding or roofing, you may hear your quantity of materials or surface area referred to in units of squares. And so the question becomes, just how much is a square?

The answer is simple. One square equals 100 square feet (1 SQ = 100 SF).

So, if your house requires 2500 square feet of siding, you would need to order 25 squares. You
should know that most siding is stocked in 2-square boxes and sometimes must be ordered in increments of 2 squares (200 SF). However, with most vinyl siding, it can be ordered in one square increments or even by the piece. There are 8 pieces per square for most standard types of vinyl siding.

Asphalt roofing is stocked and ordered by the bundle and there are three bundles per square. So, if you need 20 squares of shingles for your roof, 60 bundles will be ordered.

Ok, here's a quiz for you:

Q: You need 1833 square feet of roofing shingles. How many bundles would this require?

A: 55 bundles. (1833 SF = 18.33 SQ; 18 SQ = 54 bundles, .33 SQ = 1 bundles; 54 bundles + 1 bundle =55 bundles)

If you are ordering you own roofing material, you should always remember to account for the waste factor. With roofing, you want to add at least 10% for waste. Most roofs will require 15%. The more "cut up" the roofing surface is, the greater the waste factor will be.

A good rule for ordering siding is to simply take measurements without taking out any openings. This not only makes it easier to tabulate the total square footage, but it allows you not to have to add more for waste. So, measure your siding surfaces without worrying about subtracting for windows or doors and this square footage will usually tell you what how much you need to order. You should, however, subtract for very large openings like garage doors or you will order too much.

In the market for new roofing or siding? Call JP Construction for your free, no-obligation estimate. Call us at (877) 846-9566 or schedule online.