How to Repair Flotation Foam
Floatation foam that has been damaged or punctured on a boat can be repaired by using a product called urethane foam. This is a 2-part substance that is mixed using a 1:1 ratio. This type of foam expands up to a 30:1 ratio when both parts of the foam are mixed together. To repair flotation foam, you will need to first prepare any damaged areas before mixing the urethane foam.
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Things You'll Need
- Drywall knife
- Two-part urethane foam
- Measuring container
- Paper cups
- Small bucket
- Wood stirring stick
- Sandpaper
Instructions
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1
Prepare the area of the repair by removing any loose material with the drywall knife.
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2
Fill a paper cup 3/4 full of liquid from each container of the urethane foam.
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3
Pour the contents from each paper cup into the bucket. Mix the liquid vigorously with the wood stirring stick for 15 to 20 seconds.
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4
Remove the wood stirring stick and then pour the foam onto the area of the repair. The foam will begin to expand almost immediately and fill the entire void.
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5
Allow the foam to harden for at least 1/2 an hour. Cut any excess foam with the drywall knife. Sand the foam smooth with the sandpaper.
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Tips & Warnings
Two-part urethane foam begins to harden after 45 seconds.
Urethane foam has many marine related applications including fixing a pontoon boat.
Wear a face mask and eye protection when mixing the urethane foam.
