How many square feet does a square of shingles cover?

The basics of shingles coverage

When it comes to roofing, understanding the coverage of shingles is crucial for determining the materials needed and estimating costs accurately.

One of the common questions that homeowners and contractors alike ask is, “How many square feet does a square of shingles cover?” Let’s delve into the specifics to shed light on this important aspect of roofing.

Defining a “square” of shingles

In roofing terminology, a “square” is a unit of measurement equivalent to 100 square feet of roof area. However, the coverage provided by a square of shingles can vary depending on several factors, including the type of shingle, its dimensions, and the manufacturer’s specifications.

Factors affecting shingle coverage

One of the primary factors influencing the coverage of shingles is their size and design. Traditional three-tab asphalt shingles, for example, typically cover less area per square compared to architectural or dimensional shingles. Additionally, the exposure or overlap of each course of shingles during installation can impact the effective coverage.

Calculating shingle coverage

To determine the coverage of shingles, you’ll need to consider their “exposure” or the portion of the shingle that’s visible once installed. For standard three-tab shingles with a typical exposure of around 5 inches, a square may cover approximately 98-105 square feet of roof area. Conversely, architectural shingles with larger dimensions and higher profiles might cover 80-100 square feet per square.

Manufacturer specifications

It’s essential to consult the manufacturer’s specifications for accurate information on shingle coverage. Each shingle product comes with its own set of specifications regarding dimensions, exposure, and recommended installation practices. These specifications provide valuable guidance for estimating material requirements and ensuring proper coverage.

Accounting for waste and overlapping

When estimating shingle requirements for a roofing project, it’s advisable to account for waste and overlapping during installation. Factors such as cutting waste, starter course overlap, and hip and ridge cap installation can add to the total material needed. By including a buffer for waste and overlap, you can avoid running short on materials and ensure a smooth roofing process.

Consulting with roofing professionals

While understanding the basics of shingle coverage is helpful, consulting with experienced roofing professionals can provide valuable insights tailored to your specific project requirements. Roofing contractors have the expertise to assess your roof’s characteristics, recommend suitable materials, and provide accurate estimates based on factors like roof pitch, complexity, and local building codes.

Answering the question, “How many square feet does a square of shingles cover?” requires consideration of various factors, including shingle type, dimensions, exposure, and manufacturer specifications. By understanding these factors and consulting with roofing professionals, homeowners and contractors can make informed decisions when planning roofing projects and ensure optimal coverage and performance for their roofs.