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How to Identify and Repair Osmosis on Your Boat Hull

How to Identify and Repair Osmosis on Your Boat Hull

Osmosis, or blistering, occurs when water penetrates the laminate of a boat's hull, leading to the formation of blisters. Identifying and repairing osmosis is crucial to maintain the structural integrity of your vessel.

1. Identify Osmosis

Look for small, raised blisters on the hull's surface, often filled with water or a watery substance. These blisters are typically found below the waterline and can vary in size.

2. Assess the Extent

Determine the severity of the osmosis by pressing on the blisters to check for fluid presence. If the blisters are dry, the osmosis may be in the early stages. A surveyor can provide a more detailed assessment.

3. Dry the Hull

Remove the boat from the water and allow the hull to dry completely. This process can take several weeks, depending on the extent of the osmosis.

4. Remove Affected Laminate

Once dry, grind away the affected laminate around the blisters to remove damaged material. Ensure you follow the manufacturer's guidelines for depth and area to be removed.

5. Repair the Hull

After removing the damaged laminate, apply a suitable epoxy resin to the exposed area. Allow it to cure properly before sanding and finishing with a protective coating.

6. Prevent Future Osmosis

To prevent future osmosis, ensure proper maintenance of the hull's protective coatings and regularly inspect for signs of moisture ingress.

Contact Details:

Fortified Oceanic Pty Ltd
Shop 8, 1-5 Kalinya Street
Newport, NSW 2106
Phone: (02) 8631 2525
Email: john@fortifiedoceanic.com.au