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Product Details
3M Marine High Strength Repair Filler is for bonding and filling repairs above or below the waterline. 3M filler allows you to achieve professional repair results. These pre-mixed products utilize a benzyl peroxide creme hardener and do not require multiple mixing steps, extenders, fillers or pumps.
Simply add the hardener and these products will be ready to sand within 30 minutes of application. Strength is achieved by a unique vinyl ester formulation designed with short strand fiberglass for semi-structural repairs, above and below the waterline.
Info & Guides
Technical Information
- Excellent bond strength
- Easy Spreading
- Fast Curing
- Blue Creme hardener
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Reviews
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1 to 3 of 4 Reviews
1 – 3 of 4 Reviews
Most Recent
San Diego, CA
4 out of 5 stars.
High Strength = Hard as Nails
13 years ago
Used to fill in holes on painted deck. Very easy to apply, and stays workable for a long time. Once hardened it is extremely durable, even a belt sander had trouble with it. After application, weather rained for 3 days, but it stayed well bonded until we could paint it. Highly recommended high strength filler.
Helpful?
Cookeville, TN
5 out of 5 stars.
It comes with the blue creme hardener
15 years ago
I bought this product to do some hole patching and repair on my Boston Whaler. For this purpose, it met expectations quite nicely. The product does come with a tube of the hardener under the lid (I wasn't sure about this when ordering online, so I bought an unnecessary extra tube). I found the product easy to work with and bonded very nicely to the hull. The resulting color is a pale greenish-blue, if that matters to you.
Helpful?
Louisiana
5 out of 5 stars.
great product
16 years ago
After several personal test , product prove to be extremely strong in its ability to bond parts to each other .
Helpful?
1 Ratings-Only Review
Questions
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1 - 9 of 9 Questions
Q: null Is PVA or other air-inhibited overcoat required for full surface cure of HSRF?
3 years ago1 Answer
A: No, simply add the hardener and these products will be ready to sand within 30 minutes of application.
3 years agoHelpful?
Q: null can this be used on wood?
10 years ago2 Answers
A: Yes it can. Keep in mind that the material is very hard and durable so I would suggest that this be used carefully as a base coat especially on wood. Keep the first coat tight or even a tad low to the surface of the wood. Then fair it out with a more appropriate filler.
10 years agoHelpful?
Q: null Can I use this to repair dings in my keel due to grounding? What should I prep the Lead with?
12 years ago3 Answers
A: Yes, you can use it to repairs dings in the keel. I had a small horizontal crack in the bottom of my keel that I filled and it has stayed tight after two seasons.
12 years agoHelpful?
Q: null can I use this on aluminum as a faring compound also ?
12 years ago4 Answers
A: No idea.
12 years agoHelpful?
Q: null I have some stripped screw holes to fill, re-drill, and fasten back down. What filler should I be using in my fiberglass/gel coated boat, and do I have to tap the filler or can I just screw in? BTW, screw holes won't be visible so no need to worry too much about cosmetics. Thanks in advance! Dom
12 years ago2 Answers
A: 3M HSRF is very hard and I would recommend tapping it if you are using a machine screw (unlikely). If you are using a wood screw since there is no tap you may want to experiment with the hole diameter in a sample first . The best diameter may be larger wth a deep hole than a shallow hole.
12 years agoHelpful?
Q: null Will this work on scrapes in the hull under the water line?
12 years ago1 Answer
A: Yes, but if the scrapes are cosmetic, use Interlux Watertight instead. It is easier to sand and fair. The 3M product is excellent if you need some structural support. It is very strong thereby hard to sand and is not intended for fairing.
12 years agoHelpful?
Q: null will this work on wood?
12 years ago3 Answers
A: I have no experience with this product on wood, best to look up the specs from 3m. This product cures extremely hard which is why they do not recommend it for any fairing applications.
12 years agoHelpful?
Q: null Can gelcoat be applied over this product?
13 years ago5 Answers
A: Yes, this is a quality product that works very well with gelcoat. Minimal shrinkage and all around a good choice with gel.
13 years agoHelpful?
Q: null do you think this would adhere to small soft patches of verticle masonite siding?
13 years ago3 Answers
A: Yes I think it would. In my experience it sticks to resin sanded smooth on a verticle surface so masonite shouldn't be a problem. Just go over it a little with coarse sandpaper before applying.
13 years agoHelpful?