How To Cope With The Blistering Of Asphalt Roofing Shingles

Blistering of roofing asphalt shingles is a common issue that can occur due to various factors. Read on and learn more about the causes, potential consequences, and possible solutions related to blistering asphalt shingles.

Causes of Blistering:

  • Moisture Trapped Within Shingles: Blistering often occurs when moisture becomes trapped within the asphalt shingle layers. This can happen due to poor ventilation, inadequate installation techniques, or improper underlayment.
  • Manufacturing Defects: Sometimes, blistering may result from manufacturing defects, such as inconsistent asphalt distribution or insufficient drying during production.
  • Excessive Heat and Sun Exposure: High temperatures, prolonged exposure to intense sunlight, and inadequate ventilation can cause the asphalt to soften and bubble, leading to blister formation.

Potential Consequences:

  • Aesthetic Issues: Blistering shingles can be visually unappealing and may detract from the overall appearance of the roof.
  • Reduced Life Span: Blisters can weaken the shingles, making them more prone to further damage, cracking, or premature deterioration. This can result in a shorter life span for the roof.
  • Potential Leaks: If the blisters rupture or expose the underlying layers, they can create a pathway for water infiltration, leading to leaks and subsequent water damage to the roof deck and interior of the building.


  • Inspection and Assessment: If you notice blistering shingles, it's advisable to have a professional roofing contractor inspect the roof to assess the extent of the issue and determine the underlying cause.
  • Repair or Replacement: The appropriate course of action will depend on the severity of the blistering. In some cases, minor blistering can be repaired by carefully removing the affected shingles and replacing them. However, if the blistering is widespread or if the shingles are significantly compromised, a full roof replacement may be necessary.
  • Address Ventilation and Moisture Issues: Improving ventilation and addressing moisture-related concerns within the roofing system is essential to prevent future blistering. This may involve ensuring proper attic ventilation, installing appropriate underlayment, and addressing any issues with water intrusion or condensation.
  • Consultation With Manufacturers or Professionals: If blistering occurs due to manufacturing defects, it may be worthwhile to reach out to the shingle manufacturer to inquire about warranty coverage or other possible remedies.

It's important to note that the best course of action for addressing blistering asphalt shingles may vary based on specific circumstances and professional recommendations. Seeking advice from experienced roofing professionals is crucial to determining the most appropriate solution for your roof. Regular maintenance, prompt repairs, and proper installation techniques can help minimize the risk of blistering and ensure the longevity and performance of your roofing system.

Contact a local roofing service to learn more about roof shingles.

431 Words

About Me

Finding Fantastic Roofing Teams After struggling with the appearance and structural integrity of my home, I realized that I had to do something to make a difference. I realized that part of the issue had to be the roof, since the home had been in my family for years and nobody had ever addressed the roof before. I met with a roofing team to talk about the problem, and they were instrumental in helping me to get things sorted out. After a few renovations, things had really improved, and I felt like things were on the up and up. I wanted to start a blog that focused on finding roofing for your home, so check out this blog.