Repair Hull Blisters

Some fiberglass fillers can be tinted to a variety of colors. If you tint your filler, you can skip painting your repair in many circumstances. Do not run the brush accessory in excess of 15,000 rpm.

What You'll Need:

Other Supplies
  • Clean Cloth and Paint Thinner
  • Fiberglass Resin and Hardener
  • Fiberglass Filler

Step-By-Step Directions

Step 1

Hull blisters are common on boats. With prompt attention theyÕre not harmful.

Step 2

Grind out the blister with a 124 high-speed cutter. Recommended speed: 15,000 rpm.

Step 3

Clean the hole with the 442 carbon steel brush. Wipe away dust with a cloth dipped in paint thinner. Recommended speed: 15,000 rpm.

Step 4

Finally, fill the hole with fiberglass filler and resin. When dry, scuff the surface before painting.

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