With active core stringers (usually solid wood or pressure treated plywood), the core material is providing the stringer with most of its structural strength. Some cores are structural, or active, and some are inactive, used primarily to provide a form for a structural fiberglass skin. Tabbing may be a simple piece of glass tape across the stringer/hull joint, or an integral structural part of the stringer.
#WOOD RUNABOUT COCKPIT SOLE SKIN#
This skin extension, or tabbing, ties the stringer to the hull or bulkheads and spreads the load of the stringer over a larger area. The skin usually extends a few inches on either side of the stringer. In fiberglass boats, you will find that most often, stringers are composed of a core material overlaid with a fiberglass skin. Often they perform several of these functions simultaneously. They stiffen unsupported flat hull sections, they support cockpit and cabin soles, and they distribute high load concentrations from engines and other mechanical systems.
Stringers are support members bonded into boat hulls, usually oriented parallel to the long axis of a boat hull. As you repair or replace damaged material, use your best workmanship. Remember, stringers are structural support members.
These guidelines will help you repair almost any damaged stringer. Although each repair situation has its own unique problems, the following techniques are fundamental to stringer repair. The usual causes of stringer failure are disintegration of the stringer core material, impact damage from slamming and grounding, and fatigue from normal use. Cover Photo: Fiberglass boats can be repaired with WEST SYSTEM Epoxy.įixing damaged or delaminated stringers is one of the most common repairs associated with fiberglass boats.
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