{"id":4358,"date":"2026-01-30T17:03:20","date_gmt":"2026-01-30T17:03:20","guid":{"rendered":"https:\/\/roofmeasuring.com\/blog\/?p=4358"},"modified":"2026-02-26T16:53:21","modified_gmt":"2026-02-26T16:53:21","slug":"how-to-measure-a-roof-for-shingles","status":"publish","type":"post","link":"https:\/\/roofmeasuring.com\/blog\/how-to-measure-a-roof-for-shingles\/","title":{"rendered":"How to Measure a Roof for Shingles &#8211; Easy Step-by-Step Guide"},"content":{"rendered":"\n<p>It&#8217;s very important to know how to measure a roof for shingles accurately, as it is essential for roofing contractors, estimators, and homeowners wanting to avoid a shortage of materials, too much waste, and delays in completing a job. A very small measuring mistake can result in huge overruns or reorders of your material.<\/p>\n\n\n\n<p>This guide will show you step-by-step <a href=\"https:\/\/roofmeasuring.com\/blog\/measure-a-roof-easily\/\" data-type=\"link\" data-id=\"https:\/\/roofmeasuring.com\/blog\/measure-a-roof-easily\/\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">how to measure a roof for shingles <\/mark><\/a>properly, how many squares of roofing are needed, if there is a waste factor included and when it would be best for you to hire a professional to provide aerial measurements of your roof.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#why-accurate-roof-measurement-matters\">Why Accurate Roof Measurement Matters<\/a><\/li><li><a href=\"#tools-needed-to-measure-a-roof-for-shingles\">Tools Needed to Measure a Roof for Shingles<\/a><ul><li><a href=\"#step-by-step-how-to-measure-a-roof-for-shingles\">Step-by-Step: How to Measure a Roof for Shingles<\/a><ul><li><a href=\"#step-1-measuring-roofs-by-length-width\">Step 1: Measuring Roofs by Length &amp; Width<\/a><\/li><li><a href=\"#step-2-calculate-total-roof-area\">Step 2: Calculate Total Roof Area<\/a><\/li><li><a href=\"#step-3-finding-roof-pitch\">Step 3: Finding Roof Pitch<\/a><\/li><li><a href=\"#step-4-convert-square-feet-to-roofing-squares\">Step 4: Convert Square Feet to Roofing Squares<\/a><\/li><li><a href=\"#step-5-add-waste-factor\">Step 5: Add Waste Factor<\/a><\/li><\/ul><\/li><\/ul><\/li><li><a href=\"#what-is-a-roofing-square\">What Is a Roofing Square?<\/a><ul><li><a href=\"#manual-vs-aerial-roof-measurement\">Manual vs Aerial Roof Measurement<\/a><\/li><li><a href=\"#how-many-shingles-do-you-need\">How Many Shingles Do You Need?<\/a><\/li><li><a href=\"#common-roof-measuring-mistakes-to-avoid\">Common Roof Measuring Mistakes to Avoid<\/a><\/li><li><a href=\"#pro-tip-skip-manual-measuring\">Pro Tip: Skip Manual Measuring<\/a><\/li><\/ul><\/li><li><a href=\"#fa-qs\">FAQs<\/a><ul><li><a href=\"#faq-question-1769791287401\">1. How do you calculate shingles for a roof?<\/a><\/li><li><a href=\"#faq-question-1769791755846\">2. How many square feet is one roofing square?<\/a><\/li><li><a href=\"#faq-question-1769791804936\">3. What waste factor should I use for shingles?<\/a><\/li><li><a href=\"#faq-question-1769791897563\">4. Is the aerial roof measurement accurate?<\/a><\/li><\/ul><\/li><li><a href=\"#conclusion\">Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-accurate-roof-measurement-matters\">Why Accurate Roof Measurement Matters<\/h2>\n\n\n\n<p>Understanding how to measure a <a href=\"https:\/\/roofmeasuring.com\/blog\/best-roof-shingles-in-usa-top-5-guide-2025\/\" data-type=\"link\" data-id=\"https:\/\/roofmeasuring.com\/blog\/best-roof-shingles-in-usa-top-5-guide-2025\/\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">roof for shingles<\/mark><\/a> accurately has a direct impact on the success of roofing jobs:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Eliminate the chance of ordering too many or too few shingles.<\/li>\n\n\n\n<li>Minimize wasted materials and labor time.<\/li>\n\n\n\n<li>Provide accurate quotes to clients and their insurance companies.<\/li>\n\n\n\n<li>Present yourself as a professional contractor and provide accurate bids.<\/li>\n<\/ul>\n\n\n\n<p>Additionally, Contractors who handle several projects will save hours of estimating by having an accurate roof measurement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tools-needed-to-measure-a-roof-for-shingles\">Tools Needed to Measure a Roof for Shingles<\/h2>\n\n\n\n<p>Before you begin learning how to measure a roof for shingles, make sure you have the right tools:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Measuring tape<\/li>\n\n\n\n<li>Ladder &amp; safety gear<\/li>\n\n\n\n<li>Pitch gauge\/level\/pitch level<\/li>\n\n\n\n<li>Calculator<\/li>\n\n\n\n<li>Paper\/notepad\/cloud app for roofing purposes<\/li>\n<\/ul>\n\n\n\n<p>Professional roof measurement report (highly recommended for speed &amp; accuracy) <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"step-by-step-how-to-measure-a-roof-for-shingles\">Step-by-Step: How to Measure a Roof for Shingles<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/roofmeasuring.com\/blog\/wp-content\/uploads\/2026\/01\/Gemini_Generated_Image_vzob1dvzob1dvzob-Photoroom.png\" alt=\"how to measure a roof for shingles\" class=\"wp-image-4362\" style=\"width:472px;height:auto\" srcset=\"https:\/\/roofmeasuring.com\/blog\/wp-content\/uploads\/2026\/01\/Gemini_Generated_Image_vzob1dvzob1dvzob-Photoroom.png 1024w, https:\/\/roofmeasuring.com\/blog\/wp-content\/uploads\/2026\/01\/Gemini_Generated_Image_vzob1dvzob1dvzob-Photoroom-300x300.png 300w, https:\/\/roofmeasuring.com\/blog\/wp-content\/uploads\/2026\/01\/Gemini_Generated_Image_vzob1dvzob1dvzob-Photoroom-150x150.png 150w, https:\/\/roofmeasuring.com\/blog\/wp-content\/uploads\/2026\/01\/Gemini_Generated_Image_vzob1dvzob1dvzob-Photoroom-768x768.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<h5 class=\"wp-block-heading\" id=\"step-1-measuring-roofs-by-length-width\">Step 1: Measuring Roofs by Length &amp; Width<\/h5>\n\n\n\n<p>To start learning how to measure a roof for shingles, measure every flat roof section individually:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Measure each flat roof area separately.<\/li>\n\n\n\n<li>Measure the area of the flat roof in both length and width.<\/li>\n\n\n\n<li>Record all measurements in feet.<\/li>\n\n\n\n<li>Include garages, dormers, and extensions<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"step-2-calculate-total-roof-area\">Step 2: Calculate Total Roof Area<\/h5>\n\n\n\n<p>Multiply length \u00d7 width for each roof plane.<\/p>\n\n\n\n<p><strong>Example:<\/strong><br>20 ft \u00d7 30 ft = 600 sq ft<\/p>\n\n\n\n<p>Add all sections together to get total roof area.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"step-3-finding-roof-pitch\"> Step 3: Finding Roof Pitch<\/h5>\n\n\n\n<p><a href=\"https:\/\/roofmeasuring.com\/blog\/roof-pitch-calculator-accurate-roof-slope\/\" data-type=\"link\" data-id=\"https:\/\/roofmeasuring.com\/blog\/roof-pitch-calculator-accurate-roof-slope\/\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Roof pitch<\/mark><\/a> determines surface area. When learning how to measure a roof for shingles, you must adjust for the roof\u2019s slope:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pitch Gauge<\/li>\n\n\n\n<li>Rise over run (for example, a 6:12 pitch)<\/li>\n\n\n\n<li>Building Plans<\/li>\n<\/ul>\n\n\n\n<p>If the roof has a high angle, you must apply the adjustments for the actual area to the pitch to calculate the actual area.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"step-4-convert-square-feet-to-roofing-squares\">Step 4: Convert Square Feet to Roofing Squares<\/h5>\n\n\n\n<p>One roofing square = 100 square feet<\/p>\n\n\n\n<p><strong>Formula:<\/strong><br>Total roof area \u00f7 100 = roofing squares<\/p>\n\n\n\n<p><strong>Example:<\/strong><br>2,000 sq ft \u00f7 100 = 20 roofing squares<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"step-5-add-waste-factor\">Step 5: Add Waste Factor<\/h5>\n\n\n\n<p>Always add waste to account for cuts and errors.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Simple roofs: 10% waste<\/li>\n\n\n\n<li>Complex roofs: 12\u201315% waste<\/li>\n<\/ul>\n\n\n\n<p><strong>Example:<\/strong><br>20 squares + 10% = 22 squares needed<\/p>\n\n\n\n<p>Including the waste factor is crucial when you want to know how to measure a roof for shingles that accounts for cuts, ridges, and hips<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-a-roofing-square\">What Is a Roofing Square?<\/h2>\n\n\n\n<p>A roofing square is the standard unit used by professionals when learning how to measure a roof for shingles<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>One square of roofing is equal to one hundred square feet.<\/li>\n\n\n\n<li>Most shingles are packaged in three (3) bundles per square.<\/li>\n\n\n\n<li>There are some architectural shingles, however, that require four (4) bundles per square.<\/li>\n<\/ul>\n\n\n\n<p>Knowing how roofing squares work is essential for ordering the proper quantities of materials.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"manual-vs-aerial-roof-measurement\">Manual vs Aerial Roof Measurement<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Method<\/th><th>Accuracy<\/th><th>Time<\/th><th>Safety<\/th><\/tr><\/thead><tbody><tr><td>Manual Measurement<\/td><td>Medium<\/td><td>Slow<\/td><td>Risky<\/td><\/tr><tr><td>Aerial Roof Measurement<\/td><td>High<\/td><td>Fast<\/td><td>Safe<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Using manual measuring methods can take longer and create hazards, particularly on steep or deteriorated roofs. <a href=\"https:\/\/roofmeasuring.com\/blog\/landing-page-roof-measuring\/\" data-type=\"page\" data-id=\"931\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Aerial roof measurement services<\/mark><\/a> provide precise measurements from the air and eliminate the need for a site visit to measure.<\/p>\n\n\n\n<p>\ud83d\udc49 Aerial reports allow contractors to provide an estimate quicker and close more jobs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"how-many-shingles-do-you-need\">How Many Shingles Do You Need?<\/h3>\n\n\n\n<p>To calculate shingle quantity:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Determine total roofing squares<\/li>\n\n\n\n<li>Multiply by bundles per square<\/li>\n\n\n\n<li>Add extra bundles for ridge caps and starters<\/li>\n<\/ol>\n\n\n\n<p><strong>Example:<\/strong><br>22 squares \u00d7 3 bundles = 66 bundles<\/p>\n\n\n\n<p>Always confirm manufacturer specifications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"common-roof-measuring-mistakes-to-avoid\">Common Roof Measuring Mistakes to Avoid<\/h3>\n\n\n\n<p>When learning how to measure a roof for shingles, watch out for these common errors:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Forgetting roof pitch adjustment<\/li>\n\n\n\n<li>Ignoring valleys, hips, and ridges<\/li>\n\n\n\n<li>Skipping waste factor<\/li>\n\n\n\n<li>Miscounting roof sections<\/li>\n\n\n\n<li>Relying only on ground estimates<\/li>\n<\/ul>\n\n\n\n<p>Avoiding these mistakes protects your margins.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pro-tip-skip-manual-measuring\">Pro Tip: Skip Manual Measuring<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.nrca.net\/roofing-guidelines\" data-type=\"link\" data-id=\"https:\/\/www.nrca.net\/roofing-guidelines\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Roofing contractors<\/mark><\/a> can benefit from the speed of receiving accurate roof measurement reports within a timeframe of 8 hours for a low price point of $12.<\/p>\n\n\n\n<p>With an aerial measurement report, you will receive:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Accurate measurements<\/li>\n\n\n\n<li>Pitch, area and length<\/li>\n\n\n\n<li>No need to climb or visit the roof<\/li>\n\n\n\n<li>Faster estimates and approvals<\/li>\n<\/ul>\n\n\n\n<p>\u2705 <a href=\"https:\/\/roofmeasuring.com\/ordernew\" data-type=\"link\" data-id=\"https:\/\/roofmeasuring.com\/ordernew\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Order a Roof Measurement Report<\/mark><\/a><br>\u2705 <a href=\"https:\/\/roofmeasuring.com\/storage\/service\/1\/Residential%20Sample.pdf\" data-type=\"link\" data-id=\"https:\/\/roofmeasuring.com\/storage\/service\/1\/Residential%20Sample.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">View Sample Roofing Report<\/mark><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"fa-qs\">FAQs<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1769791287401\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">1. How do you calculate shingles for a roof?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Measure total roof area, convert to roofing squares, add waste factor, then multiply by bundles per square.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1769791755846\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">2. How many square feet is one roofing square?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>A roofing square is equal to 100 square feet.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1769791804936\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">3. What waste factor should I use for shingles?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>For simple roof designs, use a waste factor of 10% or for complex roofs a waste factor of 12% to 15%.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1769791897563\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">4. Is the aerial roof measurement accurate?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes. Contractors, insurers and adjusters use this method extensively and rely on the accuracy of the data.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Conclusion<\/h2>\n\n\n\n<p>Measuring a roof for shingles accurately and readily will help contractors lower waste, create better estimates, and become more profitable. Contractors used to measure roofs manually, but the new normal for contractors is to utilize an aerial roof measurement report as a means to obtain measurements quickly and safely with precision.<\/p>\n\n\n\n<p>If you want accurate results without climbing a roof, <a href=\"https:\/\/roofmeasuring.com\/\" data-type=\"link\" data-id=\"https:\/\/roofmeasuring.com\/\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">roofmeasuring.com<\/mark><\/a> provides fast, reliable roof measurement reports trusted by contractors across the industry.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>It&#8217;s very important to know how to measure a roof for shingles accurately, as it is essential for roofing contractors, estimators, and homeowners wanting to avoid a shortage of materials,&hellip;<\/p>\n","protected":false},"author":1,"featured_media":4369,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[93],"tags":[143,110,121],"class_list":["post-4358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-roof-measuring","tag-how-to-measure-a-roof-for-shingles","tag-roof-pitch-calculator","tag-roof-shingles"],"_links":{"self":[{"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/posts\/4358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/comments?post=4358"}],"version-history":[{"count":8,"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/posts\/4358\/revisions"}],"predecessor-version":[{"id":4472,"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/posts\/4358\/revisions\/4472"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/media\/4369"}],"wp:attachment":[{"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/media?parent=4358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/categories?post=4358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/roofmeasuring.com\/blog\/wp-json\/wp\/v2\/tags?post=4358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}