How to Replace Sailboat Plexiglass Windows: A DIY Guide

Restore your cabin’s light and stop leaks with this DIY guide to removing crazed plexiglass, prepping the gelcoat and installing crystal-clear new windows that last.

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Removing the frameless windows from a Hunter. The plexiglass fractured before releasing from the sealant. (Photo/ Bert Vermeer)
Removing the frameless windows from a Hunter. The plexiglass fractured before releasing from the sealant. (Photo/ Bert Vermeer)

Many coastal cruising production sailboats designed during the heyday of the 70s and 80s emerged from the factory with plexiglass cabin windows. These larger-than-standard portlights allowed copious amounts of light into the cabin. Plexiglass windows were inexpensive, easy to install, and safe for boats not constructed for the rigors of ocean sailing. Different manufacturers mounted these windows in a variety of ways.  Molded plastic frames as a one-piece unit or assembled aluminum frames were a favorite, or they were simply set into a shallow recess in the cabin trunk with an adhesive/sealant.

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As a coastal cruise (and occasional racer & ocean crosser), Bert Vermeer has sailed the coast of British Columbia for over 40 years. With his wife Carey & daughter Nicky (and eventually granddaughter Natasha) in tow, Bert has gained an appreciation for the fabulous cruising grounds of the Canadian west coast. Based on his experience as a hands-on boater, he established a marine based business after completing his police career. Bert stays busy during the winter months dabbling in You Tube sailing videos and writing tales of summer adventures, awaiting blue skies and warm winds.