Rubber Roof Repair (5 Common Issues & Fixes)

Written By: First American Roofing

03/28/25

7 Mins

Rubber roofs are a popular choice for commercial properties due to their durability and cost-effectiveness. However, they aren’t immune to damage or wear and tear over time. If you’re a commercial property owner, understanding the common problems with rubber roofs and how to address them can save your business significant time and money. This guide will walk you through:

Signs it’s time for a rubber roof repair
Understanding the top 5 issues & how to fix them
Preventative measures to extend roof lifespan

⚠️ Signs You Need a Rubber Roof Repair

Rubber roofs are durable and long-lasting, but like any roofing material, they can develop issues over time. Identifying these problems early can prevent further damage and costly repairs. If you’re unsure whether your roof needs attention, here are some common warning signs to watch for:

Visible Cracks or Tears: Even small fissures in the rubber membrane can indicate potential leaks.
Pooling Water: Pooled water suggests drainage issues, which can degrade the roof material over time.
Discoloration and Fading: UV damage, while often overlooked, can compromise the integrity of the membrane.
Higher Energy Costs: Failing insulation within your rubber roof can result in increased heating or cooling expenses.

🛠️ 5 Common Rubber Roof Issues (& How to Fix Them)

Rubber roofs are durable and cost-effective, but they’re not immune to problems. Knowing the most common issues and how to address them can save you time, money, and prevent further damage.

1. Leaks from Punctures

Holes, punctures, and tears in a rubber roof are common problems often caused by foot traffic, heavy equipment, or severe weather conditions. Even small damages, which might initially seem insignificant, can lead to water infiltration. Over time, this can result in serious structural issues such as rotting, mold, or compromised insulation. To fix this, begin by thoroughly cleaning the damaged area using a specialized rubber roof cleaner to remove any dirt, debris, or residue. Once the area is clean and dry, apply a rubber roof patch that is specifically designed for this purpose. Use a strong adhesive and sealant to secure the patch, ensuring all edges are fully covered to prevent further leaks. Taking care to seal the patch properly ensures a watertight repair and prevents future damage.

2. Seam Separation

Rubber roof membranes rely on heat-welded seams to maintain their watertight integrity. However, over time, these seams can degrade due to wear and tear, exposure to the elements, or improper installation. When the seams begin to separate, water can easily seep through and cause leaks. To address this issue, reseal the seam using a strong roofing adhesive. It is important to ensure the adhesive is applied evenly and allowed to cure properly for a secure bond. For larger or more extensive seam separations, a professional roofer might need to re-heat weld the affected area, restoring the seam’s durability and water resistance. Regular inspections and timely repairs of seams can help prevent costly damage.

3. UV Degradation

Constant exposure to sunlight can take a toll on rubber roofing materials, causing them to fade, dry out, and weaken over time. This degradation makes the rubber more prone to cracking, which increases the risk of water leaks and structural compromise. To combat UV damage, applying a reflective roof coating is an effective solution. This coating serves as a protective barrier that shields the surface from harmful UV rays, extending the lifespan of the roof. Additionally, a reflective coating helps reduce energy costs by keeping the roof cooler, which is particularly beneficial in hot climates. Regular application of this protective layer ensures the roof maintains its durability and performance for years to come.

4. Blistering & Bubbles

Blistering and bubbles on a rubber roof occur when air or moisture becomes trapped underneath the membrane. Over time, these pockets of trapped air or water weaken the roof’s structure, making it more susceptible to damage from foot traffic, weather, or further moisture infiltration. To fix this issue, carefully cut open the blister to release the trapped air or moisture. Once the area is exposed, clean it thoroughly to remove any contaminants that could interfere with the repair. After cleaning, apply a rubber roof patch with a strong adhesive to reseal the membrane. Ensuring the patch is securely applied will restore the roof’s integrity and prevent future problems.

5. Shrinkage Around Roof Edges

Rubber roofing materials tend to shrink as they age, particularly around edges or areas with flashing. This shrinkage creates gaps and exposes parts of the roof to the elements, increasing the risk of leaks and damage. If left unaddressed, shrinkage can cause long-term problems that may require more extensive repairs. To resolve this issue, install an updated flashing system to secure the edges and cover the affected areas. Alternatively, you can patch the areas where shrinkage has occurred to restore coverage and protection. Regular inspections of the roof edges can help identify early signs of shrinkage, allowing you to take preventive measures before the problem worsens.

🛠️ Preventative Maintenance for Rubber Roof Longevity

Prevention is always better than cure. Regular maintenance can significantly extend your roof’s lifespan while reducing repair costs. Here’s what to prioritize:

1. Schedule Regular Inspections

Having your roof professionally inspected at least twice a year can save you from costly repairs down the line. Experts are trained to spot issues like small cracks, leaks, or weakened seals before they turn into major problems. Pay extra attention following severe weather events like heavy rain, hailstorms, or high winds, as these can cause unseen damage to your roof. Regular inspections not only extend the lifespan of your roof but also keep your property safe from potential water damage or structural issues.

2. Keep Your Roof Clean

A clean roof is a healthy roof. Leaves, twigs, dirt, and other debris can accumulate over time, clogging your drainage systems and causing water to pool on the surface. This standing water can weaken the roofing material and lead to leaks. Regular cleaning, whether through manual removal of debris or professional power washing, prevents buildup and ensures proper water flow. A clean roof also helps maintain a professional, polished appearance for your property.

3. Trim Overhanging Trees

Nearby trees can pose a significant risk to your roof, especially during storms or windy weather. Overhanging branches can scrape against the surface, damaging the rubber membrane or causing punctures that lead to leaks. Falling leaves can also contribute to clogging drainage systems. Regularly trimming trees near your roof minimizes these risks, protecting your roof from physical damage and ensuring that water can flow off the roof without obstruction.

4. Apply UV Protective Coatings

Rubber roofs are vulnerable to UV damage over time, which can cause the material to crack, fade, or degrade. Applying a UV reflective coating acts as an extra layer of protection, shielding the roof from harsh sunlight. Beyond preventing UV damage, these coatings also improve energy efficiency by reflecting heat away from the building, reducing indoor cooling costs during hot seasons. This simple step can significantly extend the life of your roof while helping you save on energy bills.

5. Address Issues Immediately

Delaying repairs for even minor issues like small cracks, punctures, or loose seams can have serious consequences. What starts as a small problem can quickly escalate into significant damage, leading to expensive repairs or even roof replacement. Addressing issues as soon as they arise ensures the structural integrity of your roof is maintained. Prompt repairs not only save money in the long run but also prevent disruptions that could impact your daily operations or home life.