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Jamestown Distributors(800) 497-0010
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Bondo-Hair is formulated with long strands of chopped fiberglass for twice the strength of a regular body filler. Recommended for use on up to 1" rust holes, shattered fiberglass and dents where extra strength is required. Great for rebuilding missing pieces or auto/marine restoration work. Repairs fiberglass, metal and wood. Sandable in only 20 minutes and compatible with all fillers, primers and paints. Waterproof. Includes red cream hardener.
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Is this a 2 part "bondo" filler similar to the automotive bondo I have used in the past to "fair" the surface prior to primer and paint. This is for the new wooden bottom of a boat.
Yes. I believe the resin is all the same if not very similar, but it has fiberglass strands in it for added strength. Ideally this would then have a fairing type product go over it for fine fairing.
JD Tech Associate
Is this product ok for wood hulls below water. patching dings and screw heads?
The Bondo Long Hair Fiberglass Filler is probably not what you want to use to fill dings and screw heads because it will not fill small areas cleanly. I used a gallon of the stuff and it did really well at filling and building up large areas but it is extremely sticky and does not separate into small globs to fill a screw head. The material is extremely "globby." when you scoop it out of the bucket to mix, it does not want to separate from the rest of the material. I think the fine bondo would do a good job for you because it does lend itself the batching in small increments and is workable to fill small holes. Hope this helps.
CHRISTOPHER M JOHNSON
Overall great product and very easy to use but I question its use in marine applications. I have repaired several canoes/boat hulls with this product and seemingly it has preformed well. My only question/comment is that it does not specifically say whether or not it is okay to cover with fiberglass.
Repair Sill Rot
I have rotten wood on the sill touching my foundation and will need to jack up the house and replace in a couple years. I used Bondo-Hair as a temporary patch to seal the rotten area after treating it with a rot-killer. I needed to take small clumps of the product at a time and mix it with the hardener which took some time and became messy toward the end, but the result was a waterproof seal that is very moldable before it sets. It's waterproof, doesn't shrink, and is extremely strong. Adheres to anything.