How to Calculate Shingles for an 1100 Sq Ft House: Guide to Estimating Shingle Needs for Your RoofSarah ThompsonApr 09, 2025Table of ContentsUnderstanding Roof Pitch and Shingle CoverageAdding Waste Factor to Your CalculationFinal Steps and ConsiderationsFAQTable of ContentsUnderstanding Roof Pitch and Shingle CoverageAdding Waste Factor to Your CalculationFinal Steps and ConsiderationsFAQFree Smart Home PlannerAI-Powered smart home design software 2025Home Design for FreeCalculating the number of shingles needed for an 1100 sq ft house is essential for a successful roofing project. Shingle quantities depend on the roof's pitch, type of shingles, and layout. Typically, roofing professionals use squares to measure shingles, where one square covers 100 square feet. For an 1100 sq ft house, you'll need to consider additional factors like waste for cuts and overlaps.Understanding Roof Pitch and Shingle CoverageThe roof pitch significantly impacts the amount of shingles required. A steeper pitch means more surface area. Standard asphalt shingles cover approximately 33.3 sq ft per bundle. Therefore, if your roof pitch is average, you will require around 12 to 14 bundles.Adding Waste Factor to Your CalculationIt's wise to include a waste factor, typically around 10-15% for standard roofing projects. This accounts for errors and cuts. So, if you calculated needing 14 bundles, adding a 10% waste factor would mean purchasing an additional bundle or two, resulting in a total of 16 bundles.Final Steps and ConsiderationsBefore you begin your roofing project, ensure to double-check your measurements and consult with a professional if unsure. Engaging with a community of designers can also provide insights and tips on your roofing needs. For more detailed planning, check out tools like the Coohom Floor Planner.FAQHow do I determine my roof's pitch? You can determine your roof's pitch by measuring the rise over the run. A pitch of 4/12 means it rises 4 inches for every 12 inches horizontally.welcome to CoohomHome Design for FreePlease check with customer service before testing new feature.