Building Exteriors, Building Relationships 228-432-4067 | 601-342-0979

The Pros and Cons of Using Roof Cement

Roof cement, also known as roofing tar or mastic, is a versatile roofing material commonly used for repairs, sealing, and waterproofing. While it offers several benefits, it also comes with its share of drawbacks. In this article, we’ll explore the pros and cons of using roof cement to help you make informed decisions when it comes to roofing projects.

The Pros of Using Roof Cement:

  1. Affordability: Roof cement is a cost-effective solution for various roofing needs. It’s relatively inexpensive compared to some other roofing materials.
  2. Ease of Application: Roof cement is user-friendly and can be applied with a trowel, putty knife, or caulking gun. This makes it accessible to both DIY enthusiasts and professionals.
  3. Sealing Leaks: Roof cement is excellent at sealing small leaks, cracks, and gaps in roofing materials. It provides a quick fix for minor issues.
  4. Versatility: It can be used on a variety of roofing materials, including asphalt shingles, metal, concrete, and wood.
  5. Weather Resistance: Roof cement is designed to withstand harsh weather conditions, including rain, snow, and UV rays. It provides a protective barrier against the elements.

The Cons of Using Roof Cement:

  1. Temporary Fix: While roof cement is effective for small repairs, it is generally considered a temporary solution. It may not provide a long-lasting fix for larger or more complex roofing problems.
  2. Limited Flexibility: Roof cement can become brittle over time, making it less flexible. This can lead to cracking and the need for frequent reapplication.
  3. Aesthetics: Roof cement is not the most aesthetically pleasing option. Its black or dark gray color may stand out against lighter-colored roofing materials.
  4. Maintenance: Roof cement may require regular maintenance and reapplication to remain effective, especially in areas with extreme weather conditions.
  5. Difficult Removal: Removing old or improperly applied roof cement can be challenging and may damage underlying roofing materials.
  6. Application Challenges: Applying roof cement correctly requires skill and experience to ensure proper coverage and adhesion. Improper application can lead to leaks and other issues.

When to Use Roof Cement:

Roof cement is best suited for specific situations, including:

  • Sealing small cracks and holes in roofing materials.
  • Patching minor leaks and punctures.
  • Securing loose or lifted shingles.
  • Flashing repairs around chimneys, vents, and skylights.


Roof cement can be a valuable tool for quick fixes and temporary repairs on your roof, but it’s important to recognize its limitations. While it offers affordability and ease of application, it may not be suitable for long-term solutions or extensive roofing problems. For major roof repairs or replacements, it’s advisable to consult with a professional roofing contractor who can assess the situation and recommend the most appropriate and durable roofing materials and techniques.

How to find us: