What percentage waste allowance is included for starter and waste when ordering shingles?

• A. 5%
• B. 10%
• C. 15%
• D. 20%

Answer: (B)

The correct answer of 10% is a commonly recommended waste allowance when ordering shingles for roofing projects. This percentage accounts for various factors that can lead to material loss during installation, such as miscuts, damaged pieces, or shingles that might not be suited for use due to imperfections.

Utilizing a waste allowance ensures that there is enough material to accommodate these unforeseen issues, which is especially important in roofing projects where proper coverage is critical for weatherproofing and aesthetic uniformity. The 10% figure is widely accepted in the roofing industry, balancing material efficiency with a safety net to avoid shortages during the installation process. This percentage provides a practical guideline for contractors and DIY enthusiasts alike to ensure they have sufficient materials on hand to complete their projects successfully without delays.