'Legends From The Norfolk Broads' is now available on Amazon in paperback and ebook format.

Click here for details!

Mastering Boat Repairs Fibreglassing the Stern Section

Articles and videos about boat restoration and maintenance.
Post Reply
User avatar
Site Admin
Posts: 392
Joined: Wed Apr 26, 2023 9:03 am

Mastering Boat Repairs Fibreglassing the Stern Section

Post by NBF »

Mastering Boat Repairs: Fibreglassing the Stern Section

Embarking on the journey of repairing and fiberglassing a boat can be both challenging and rewarding. In this article, we delve into the meticulous process of refurbishing the stern section of a boat, exploring the intricacies of fibreglass application and the nuances of working in varying weather conditions.

Understanding the Foundation

In the latest instalment on the 'Boat Repairs' YouTube channel, our host, Miles, takes us through the process of fiberglassing the newly rebuilt stern section of a boat. The key element of this repair lies in reinforcing the structural integrity, focusing on the area behind the tiller and steering mechanism.

The freshly placed plywood serves as a crucial component in this restoration. Acting as a mould, it plays a pivotal role in recreating the fibreglass layer, which is the primary source of structural strength for the boat. Unlike conventional boat-building methods in a mould, this boat was constructed over a template, requiring meticulous attention to detail during the repair.

The Fiberglassing Process Unveiled

To reinforce the structure, Miles takes us through the steps of applying fibreglass layers. The objective is to build up three layers to ensure durability. The process involves sanding down the layers, creating a smooth and aesthetically pleasing surface that will later be sealed and painted.

Timing is critical in this process, as revealed by Miles, who explains that the repair was delayed due to the scorching August heat in 2022. Working with resin in excessively high temperatures can be challenging, requiring a strategic approach to ensure optimal results.

Unique Boat Building Techniques

Miles shares insights into the unique boat-building technique employed in this particular vessel. Unlike traditional moulds, his boat, based on a Bruce Roberts plan, was constructed over a mould using C-flex instead of strip planking. This distinctive method adds complexity to the repair process, as any wooden components affected by rot must be meticulously replaced to maintain the original template.

Essential Tools for the Job

The video showcases a set of tools essential for the fiberglassing process. These include a fibreglass roller, polyester resin, paintbrush, big scissors, acetone, and peel ply. Miles explains the challenges he faces due to the heat, requiring him to apply resin in smaller sections to avoid complications.

Challenges and Solutions

As the repair progresses, challenges arise, particularly with the application of polyester filler and topcoat. The intense heat proves to be a formidable opponent, causing the paint to dry prematurely. Despite setbacks, Miles emphasises the importance of perseverance in boat repairs, highlighting the satisfaction of achieving excellent results with the right techniques.

Finalising the Repair

After a meticulous sanding process using an angle grinder, Miles applies primer to reveal any imperfections in the fibreglass. This step is crucial for achieving a flawless finish. Despite facing challenges with the topcoat application, Miles remains optimistic, demonstrating the resilience required in the world of boat repairs.


In conclusion, the journey of fiberglassing the stern section of a boat unveils the dedication and expertise required in boat repairs. Miles' meticulous approach, coupled with insights into unique boat-building techniques, provides viewers with a comprehensive guide to tackling similar projects. As we navigate the highs and lows of this repair alongside Miles, we are reminded that, in the world of boat restoration, patience and adaptability are indispensable virtues.
Webmaster of the Norfolk Broads Forum
Post Reply