3M 5200 (tan)

3M 5200 is a single part marine adhesive sealant that cures to form a firm, rubbery waterproof seal.  When fully cured, this high strength marine adhesive remains flexible and suitable for use where shock, vibration, shrinking, or swelling are concerns.  Perfect for Lyman lapstrake plank replacement above or below the waterline.  

This permanent adhesive bonds and seals:  fiberglass deck to hull, wood to fiberglass, portholes and deck fittings, motors on fiberglass transoms, under moldings, hull seams above and below water line, centerboard trunk joints, between struts and planking, stern joints and more.

Apply with a manual caulking gun.  Sealant remains workable with a trowel or spatula for up to four hours and won't sag or flow in vertical or horizontal seams.