Understanding Roofing Black Paper: What You Need to Know: A Quick Guide to Black Paper for Roof InstallationSarah ThompsonSep 09, 2025Table of ContentsTips 1:FAQTable of ContentsTips 1FAQFree Smart Home PlannerAI-Powered smart home design software 2025Home Design for FreeRoofing black paper, also known as roofing felt or tar paper, is a common material used under roof shingles to provide an additional layer of protection against moisture and environmental conditions. Composed of either organic or fiberglass base saturated with asphalt, its primary role is to act as a moisture barrier, prolonging the lifespan of your roofing structure. Homeowners, builders, and even interior designers should understand the function and installation of roofing black paper to ensure optimal roofing performance and longevity.The application of black paper under roofing shingles is recommended for most climates because of its reliability in preventing water infiltration during heavy rains or melting snow. It also serves as a cushion that can make the surface of the roof smoother and easier for shingle installation. While its thickness typically ranges from 15-pound (standard) to 30-pound (heavy-duty) grades, the selection depends on the local climate, roofing type, and the structure’s overall needs.Properly installed roofing black paper contributes significantly to the building envelope's effectiveness. However, for those considering renovations or new home builds, aligning roof protection with the overall layout and design is crucial. As a designer, I always remind clients that while selecting materials like black paper seems purely functional, it integrates seamlessly into holistic home planning. For example, roof selection affects attic moisture and temperature, which in turn shapes choices for attic flooring and wall insulation—areas where interior design and architectural planning meet. For a comprehensive approach to both functional and aesthetic aspects of your home, it's worth exploring professional tools like a 3D floor planner to visualize how every element, from roof underlayments to layout choices, work together.Tips 1:When installing roofing black paper, ensure each sheet overlaps the next by at least 2 to 4 inches and that all staples or nails are sealed. This prevents water from tracking beneath the paper. Also, familiarize yourself with local building codes as requirements can vary by region and roof type.FAQQ: What is roofing black paper made of? A: Roofing black paper is typically made from organic or fiberglass base materials saturated in asphalt, designed to resist moisture and protect roof decking.Q: Is roofing black paper necessary for all roof types? A: While highly recommended for shingle roofs, it is sometimes optional for metal or other specialized roof systems. Check manufacturer guidelines and local codes.Q: What’s the difference between 15-pound and 30-pound roofing felt? A: The 30-pound felt is thicker, more durable, and offers better weather resistance, often used in areas with harsher climates or heavier roofing materials.Q: Can roofing black paper be installed as a DIY project? A: Yes, but correct installation is vital. Overlaps, sealing, and proper fastening must be followed to ensure moisture resistance.Q: Does roofing felt impact interior comfort? A: Indirectly, yes. By minimizing moisture intrusion, it helps maintain the integrity of insulation and reduces risks of mold, both important for interior health and comfort.Home Design for FreePlease check with customer service before testing new feature.