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Signs Your Boat Windows Need Resealing


Over time, exposure to the marine environment can take a toll on your boat’s windows, leading to wear and tear, compromising their structural integrity. The seals are for securing your boat windows and ensuring a watertight solution as these are particularly prone to deterioration over time, leading to water leaks and damage to your vessel’s interior. There are many signs that indicate your boat window seals need attention, and preventive maintenance is essential in ensuring your vessel remains water-tight and ship-shape. At Marine Window Services, we provide expert boat window resealing services to get your vessel functioning at its best and back on the water as soon as possible.

The Vital Role of Boat Window Seals

Boat window seals serve as crucial components of your vessel’s functionality and safety, as a critical barrier between the interior of your vessel and the harsh marine elements. Boat window seals prevent water, wind, dust and even sound from infiltrating your boat’s interior. Without proper sealing, water can seep into your boat through the windows, wreaking havoc on the interior and potentially putting passengers and equipment in danger. This scenario becomes even more critical for boats that brave turbulent waters, where the integrity of window seals can make the difference between a secure and precarious voyage. Early detection of any wear or deterioration and prompt resealing is essential in ensuring the durability and performance of your boat window seals.

Detecting the Signs of Wear

Like any other part of your vessel, boat windows endure harsh conditions. Exposure to saltwater, UV rays, and extreme weather can lead to seal deterioration over time. Here are some clear signs that indicate your boat windows seals might be compromised and due for resealing or replacement:


A common signal that your marine window seals are deteriorating is the discolouration of the seals. The presence of discolouration is an immediate visual cue of the underlying chemical changes compromising the seals’ material composition. While this is a visual eye-sore, it also serves as a precursor to further damage, such as cracks, tears and hardening of the seals as the breakdown of the seal’s structural integrity continues.

Cracks & Tears

The impact of prolonged UV ray exposure and environmental stressors can manifest as cracks and tears within the marine window seals. These seemingly innocuous fissures can compromise the seals’ integrity by creating avenues for water seepage. The water breaches caused by these openings pose the risk of interior damage and potentially jeopardising passenger safety.


Over time, prolonged exposure to sunlight and salt in the wind and water can cause window seal materials to harden. This small alteration can have drastic consequences, making the seal brittle and prone to breaking. It reduces the seal’s ability to repel water, wind and noise, thus affecting the comfort and security of the vessel’s interior.

Preventive Maintenance: The Key to Your Vessels Longevity

If your marine windows show any of the above signs, it’s time to reseal your boat windows to avoid further damage. Regular maintenance and timely resealing will allow you to extend the lifespan of your windows and seals. Early detection is key in preventing water intrusion and structural damage. At Marine Window Services, we provide durable, high-quality boat window resealing services that ensure a watertight solution that will withstand the marine elements.

Superior Boat Window Resealing Services by Marine Window Services

When it’s time for resealing or replacement, trust Marine Window Services to deliver superior solutions. Our expertise in marine glass and window resealing ensures that your boat windows maintain optimal condition and performance. Our skilled team meticulously executes marine window resealing procedures, ensuring your boat remains watertight and visually appealing.

Advanced Marine Glazing

Unmatched Expertise & Premium Marine Window Solutions

Marine Window Services (MWS) is an industry-leading force in the realm of marine window solutions, specialising in custom and curved windows for superyacht vessels. Our unwavering commitment to excellence is the driving force behind our comprehensive service range, covering window manufacturing, installation and maintenance (resealing, repairs and replacements) catering to luxury and commercial marine vessels. Beyond mere maintenance, we excel in consulting, project management, and the supply of top-tier materials, offering comprehensive marine window and glass solutions.

When you choose Marine Window Services, you choose expertise, a legacy of excellence, and a commitment to advancing the future of marine window solutions. Reach out to our expert technicians today on 0412 108 269 to discuss partnering with Marine Window Services for your next project.


With over two decades of experience, we’ve left an indelible mark on global marine projects throughout Australia, New Zealand, Canada, the U.S., England, France, Spain and Fiji. Our team tackle recreational, commercial and technical marine window projects across South East Queensland and greater Sydney – including Brisbane, Hemmant, Murarrie, Manly, Coomera, Hope Island, Sanctuary Cove, Raby Bay, Redlands, the Gold Coast, the Sunshine Coast, Sydney Harbour, Darling Harbour, Circular Quay, Port Botany, Balmain, Garden Island and Parramatta River, as well as throughout Australia and abroad.

Our seasoned team, dedicated to delivering quality marine glazing solutions, manages projects with precision, whether it involves manufacturing and installing one window or 80 on a vessel. As part of a comprehensive portfolio of glass options for fabrication and installation, we offer marine-certified, internationally accredited-products backed by warranties. MWS stands out as a trusted service provider and approved warranty works provider for renowned yacht builders including San Lorenzo, Benetti, Ferretti, and Horizon. Collaborating with industry leaders like ACMG and Superyacht Australia, we are pioneers in superyacht custom curved window fabrication, installation and maintenance.