When it comes to maintaining the integrity and appearance of your home, the roof stands as one of the most crucial components. For homeowners in Columbia, Maryland, the decision between overlaying a roof and reroofing entirely can be especially intricate. Kanga Roof, a leading roofing company in Columbia, delves into this debate with a comprehensive guide on the pros and cons of both methods, ensuring residents of Columbia MD make an informed decision for their homes.

What is Roof Overlaying?

Roof overlaying, often termed as a “roof layover,” involves placing a new set of shingles over the existing ones. This method, popular among many roofing companies in Columbia MD, is designed to extend the life of your roof without stripping away the current materials.

Benefits of Roof Overlaying

  • Cost-Efficient: With no need to remove the old shingles, labor and disposal costs are curtailed.
  • Time-Saving: Kanga Roof experts emphasize that the process is faster as it omits the removal step.
  • Environmental Advantage: Reduced waste as old shingles are retained.

Limitations of Roof Overlaying

  • Weight Concerns: Adding an extra layer can put strain on certain roof structures.
  • Shorter Lifespan: The new shingles might not endure as they would on a fully refurbished roof.
  • Undetected Issues: Underlying issues from the original roof layer might remain unresolved.

What is Reroofing?

Reroofing, a service often provided by roofing contractors in Columbia, involves the total removal of the existing roof materials and the installation of a brand new roof. This approach ensures that any worn-out or damaged parts are properly addressed.

Advantages of Reroofing

  • Long-Term Solution: This provides a fresh start, guaranteeing a long life for your new roof.
  • Problem Detection: By removing old materials, issues like moisture damage can be pinpointed and fixed.
  • Structural Integrity: Without added weight, your roof’s structure remains uncompromised.

Disadvantages of Reroofing

  • Increased Initial Cost: The extensive procedure might involve higher labor and material expenses.
  • More Time-Consuming: The method can take longer since the existing roof needs removal.

Making the Right Decision with Kanga Roof

For those considering a roofer in Columbia MD, it’s essential to weigh the age and condition of your current roof against your budget. If the roof is in decent shape and you’re looking for a short-term fix, an overlay might be the right choice. But if there’s considerable wear or damage, or you’re looking for a durable solution, reroofing might be more suitable.


Your roof is the primary defense against external elements. Whether you lean towards a roof overlay or a complete reroofing, it’s paramount to ensure quality and professionalism. By understanding both techniques’ pros and cons, homeowners can guarantee the longevity and aesthetic appeal of their roofs for the foreseeable future.