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3M

Fiberglass Resin Repair Kit 0 45 pint 7 2 oz All-in-One Set with Resin Hardener Fiberglass Cloth and

$19.99$124.99

1465+ bought in the past month

Sobre este artículo

  • All-in-One DIY Repair Kit: Complete fiberglass repair set that includes 0.45 pint (7.2 oz) of resin, liquid hardener, fiberglass cloth, mixing tray, applicator stick, spreader and instructions. Everything needed for a quick repair – no extra tools or experience required.
  • 100% Waterproof & Permanent Bond: Industrial-strength resin cures to a completely waterproof solid patch for long-lasting repairs. Won’t shrink, crack, or pop off over time – ideal for sealing leaky boat hulls, fixing rusted auto panels, or patching wet areas like pools and tubs.
  • Strong Multi-Surface Adhesion: Versatile formula bonds to fiberglass, wood, metal, concrete, and more. Restore cracked boat fiberglass, repair damaged car bodies, mend surfboards, gutters, or bathtubs – one kit handles it all. Forms a tough fiber-reinforced patch on most surfaces.
  • Fast Curing – Sand & Paint in Hours: Quick-curing resin sets in as little as 2 hours, letting you finish repairs fast. Once hardened, it’s easy to sand to a smooth finish and is paintable for a seamless blend with your surface. Get professional results in an afternoon.
  • Save Time & Money on Repairs: Tackle it yourself and avoid expensive body shop or marine repairs. This fiberglass repair kit lets you fix holes, cracks, and gaps at a fraction of the cost of hiring a pro or buying new parts – without compromising on strength or durability.

Key details

manufacturer
3m Company
brand
3M
exterior
Clear
manufacturer_part_number
420
best_sellers_rank
#6,059 in Automotive ( See Top 100 in Automotive ) #18 in Body Repair Putty

Dimensions and fit

dimensions
‎2.3 x 3.6 x 7 inches
weight
‎14.4 ounces
item_weight
14.4 ounces
product_dimensions
2.3 x 3.6 x 7 inches

Technical specifications

model
420
item_model_number
420

Item information

date_first_available
May 23, 2015
Highlights

About this item

  • All-in-One DIY Repair Kit: Complete fiberglass repair set that includes 0.45 pint (7.2 oz) of resin, liquid hardener, fiberglass cloth, mixing tray, applicator stick, spreader and instructions. Everything needed for a quick repair – no extra tools or experience required.
  • 100% Waterproof & Permanent Bond: Industrial-strength resin cures to a completely waterproof solid patch for long-lasting repairs. Won’t shrink, crack, or pop off over time – ideal for sealing leaky boat hulls, fixing rusted auto panels, or patching wet areas like pools and tubs.
  • Strong Multi-Surface Adhesion: Versatile formula bonds to fiberglass, wood, metal, concrete, and more. Restore cracked boat fiberglass, repair damaged car bodies, mend surfboards, gutters, or bathtubs – one kit handles it all. Forms a tough fiber-reinforced patch on most surfaces.
  • Fast Curing – Sand & Paint in Hours: Quick-curing resin sets in as little as 2 hours, letting you finish repairs fast. Once hardened, it’s easy to sand to a smooth finish and is paintable for a seamless blend with your surface. Get professional results in an afternoon.
  • Save Time & Money on Repairs: Tackle it yourself and avoid expensive body shop or marine repairs. This fiberglass repair kit lets you fix holes, cracks, and gaps at a fraction of the cost of hiring a pro or buying new parts – without compromising on strength or durability.

Product videos

Product video 1

Customer reviews

213 reviewsPositive

Rated 4.6/5 across 213 reviews — highly regarded by customers.

  • 100% of sampled reviews are from verified purchases.
  • 88% of sampled reviews give 4–5 stars.

Customers say

Customers find the fiberglass repair kit to be of good quality and easy to use, working well for pinhole defects.

Generated from the text of customer reviews

Reviews with images

Customer review image for Great fiberglass kit!Customer review image for Great fiberglass kit!
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★★★★★

Great fiberglass kit!

If you have a small item needing repair, this kit has all the components needed for a fiberglass repair. I have a 25 year old car who's windshield washer reservoir had broken from old age. The plastic was brittle from age and heat. Replacements are not available anymore, too old i guess. I used this kit to close up the holes. The fiberglass is stronger than the original plastic! Works great! Read more

Customer review image for Great fiberglass kit!Customer review image for Great fiberglass kit!
D. ZumaltVerified purchase
★★★★★

You can’t go wrong !!

The kit is great ,comes with everything you need. You can’t ask for more. I do have one complaint the squeegee that comes with it cracked right in half. Thought I had a rubber squeegee laying around, but no go. Really is all you need is enough small throwaway paintbrush’s and you’ll be good to go. Not supplied. But all in all, it worked great for the old John Deere 110 round fender hood. I highly recommend for small jobs It comes with enough, fiberglass fiber to do more than what the bottle gives you. Make sure you get enough rubber gloves to do your job. Not supplied. And for the price, you can’t beat it. Thanks again Michael T Read more

Michael T.Verified purchase
★★★★★

Worked great to repair a pin hole defect in the bottom of our new tub

Worked great to repair a pin hole defect in the bottom of our new fiberglass tub. After installation, a defect in the fiberglass tub showed up and had a very slow drip. Fortunately, this was caught before everything was closed up. I started with three pieces of fiberglass, layering one at a time starting with the first piece (about the size of a quarter), using a small craft paint brush to work in the prepared resin, then a middle layer, again painting it in and finally the last piece (about the size of a silver dollar), again working in the resin and smoothing out the edges with the paint brush. Don't overwork it or you may pull fibers out of the cloth. Whole repair took about 15 minutes and has held perfectly for about a month now. No leaks! Read more

B. WolfVerified purchase
★★★★

Good product

Good product. Perfect for small repair jobs. Read more

tom mcginleyVerified purchase
★★★★★

Easy to do

Used to repair pool pump. Easy to understand instructions. Read more

PublicVerified purchase
★★★★★

Quality kit for small task

Had a small repair job and used in an unheated garage, worked great as expected Read more

bdsVerified purchase
★★★★★

Fiberglass resin kit for RV slide out

Gray kit when you have a small repair Read more

Dave KendallVerified purchase
★★★★★

good

Worked as advertised as part of my fiberglass repair project. Read more

Mike H.Verified purchase
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