Posts Tagged ‘repair’

Step by Step Fiberglass Boat Repair Guide

See how to patch a small hole in your boat’s hull using West System epoxy kit and this fiberglass boat repair guide.. (Video Rating: 3 / 5)

Step-by-Step Fiberglass Boat Repair Guide

Step by Step Fiberglass Boat Repair GuideStep 1.

Examine the pattern and location of cracks in your boat’s hull to determine their cause. If the pattern or location indicates flexing, examine the interior side of the panel to determine the best location for additional reinforcing. If the cracks are a result of impact, examine the interior side of the panel to determine whether damage extends through the entire laminate.

Step 2.

Remove any surface contaminants such as wax, oil or mold release from the surfaces you examined in step 1 of the Fiberglass Boat Repair Guide. Wipe an area at least twice as large as the damaged area with a wax and silicone remover (Dupont Prep-Sol® #3919S), acetone or other appropriate solvent. Dry the area with clean paper towels before the solvent evaporate.

Step 3.

Open the cracks for repair. Use a sharpened “V” shaped tool to scrape down to the bottom of the cracks. A puncture-type can opener with the tip sharpened to about 90° works well. Beveling the sides of the crack provides more bonding area for the repair. It may be more effective to grind out an entire area of many, closely spaced or deep cracks. Scrape or grind as deep as necessary to reach solid, undamaged material. The depth of the crack will determine which course of repair to follow in this Fiberglass Boat Repair Guide:
  • Shallow cracks or scrapes that affect only the gelcoat layer may be repaired with the gelcoat repair techniqe. If necessary, reinforce the laminate to reduce flexing as described in Section 2.3. Some small cracks or chips can be filled with a gelcoat touch-up kit.
  • Minor cracks or scrapes that run through the gelcoat into the first chopped strand mat layers of the laminate should be repaired with epoxy using the procedures described below. Finish with the gelcoat repair technique. If necessary, reinforce the laminate to reduce flexing.
  • Deep cracks extending into woven fabric of the laminate require a structural repair before beginning the cosmetic gelcoat repair. If the crack extends into or through the woven fabric of the skin, follow the procedures. If a core has delaminated or is damaged from moisture penetration or impact, follow the appropriate procedure.
For better and more detailed explanation of the fiberglass boat repair procedures described in this fiberglass boat repair guide you should look into the official West Systems Epoxy Repair Guide which can be found at

Step by Step Fiberglass Boat Repair Guide

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18 comments - What do you think?  Posted by admin - November 27, 2011 at 21:30

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Boat transom replacement tutorial


People who are restoring old boats often face the problem of rotten wood inside their boat’s core. One of the most frequent repairs on older boats is replacing or at least repairing a plywood cored transom. I had a similar problem when rebuilding my boat and since I didn’t find any good How-To’s I decided to write one and try to illustrate how to replace the transom plywood core on a boat.

Preparing for the boat transom replacement

The first thing to do, before you start to remove parts from your boat, you should take some pictures of how everything looked in the start, so you will have some guidelines for later on. Also you should take some measures of parts around the transom, such as fiberglass thickness of the outside skin, plywood thicknes of the transom itself, inside fiberglass skin thickness, stringer location and thickness and so on…

Be sure to support your boat’s hull well, becouse when you remove structural parts from the hull it becomes flexible and it can twist. You will end up with a twisted boat, and that can’t be undone. Keep in mind that the keel should be heavily supported. Read more…

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1 comment - What do you think?  Posted by admin - August 30, 2011 at 02:07

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DIY Fiberglass Boat Floor Repair

DIY Fiberglass Boat Floor RepairI found this great guide on that I think all of you should read. Your boat’s floor can root over the years and so it becomes dangerous for you and your crew to move safely around the vessel. At some point you will have to consider repairing or replacing your boat’s floor. It is very important to assess the damage correctly so you don’t start the repair and by the time you are done you realise you forgot to renovate the foundations for the floor. These are usualy made out of wood and are covered with fiberglass. Moisture can start to build up inside the fiberglass cover and just imagine what will come out in a few years. Check out the Fiberglass How-To Guide and Basic Fiberglass Molding Techniques to get a general idea on what you have to do. Also Boat Plans for Boat Builders might shead some light on the topic.

Assessing the Damage

Locate and correctly mark the areas of the fiberglass boat which have been damaged. Keep the required materials ready so that you can start working on the repairs.

The damage often results in delamination, so tap the area with the back of a screwdriver to see the extent of the damage to the laminate. Solid sounds crisp and sharp, while the delaminated part sounds dull. You can always compare by tapping one side that is good, and then the damaged area to notice any differences.

Repairing the Damage

The repair process is devided into eight easy and understandable steps. if you follow them I am sure you will make a fine job restoring your boat’s floor. Read more…

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1 comment - What do you think?  Posted by admin - November 26, 2010 at 02:56

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