TotalBoat Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair

I would buy again. Easy to use. No issue, just make sure you are in a well-ventilated area.

After I reinforced a hole in the hull with fiberglass and resin, there was still a low spot. I figured it would take forever to keep filling it in with resin, plus the resin is extremely runny so it is hard to get it to stay in the low spot. I came across this putty and out of the can it is extremely workable, not runny, does not sag and stay put. Even mixing in the liquid hardener does not effect it or make it runny. I applied it to the hull and it literally took one coat and evened the low spot out. I mean it goes on so smooth, and you have plenty of time to work with it before it starts to get tacky. The price is very fair compared to other stuff like Bondo which they say you don't want to use for these types of repairs. I have yet to sand it, but it is extremely hard and nothing an orbital sander can't handle. Hope this review helps as I was going back and forth on what fiberglass to use.

Great product! Works great! Highly recommend!

First time using this type of filler.Cure time was predictable. Mixed easily on my board. Spread smoothly. Where I did have some unevenness I was able to fill after initial curingMinimal sanding, great finish. Been over a year out in the weather. No pitting, cracking or shrinkage

This works great for what I need. A bit difficult in sanding it down a bit but works well in filling the gaps

Great strength- easy to sand and shape. Very durable. I found this a very satisfactory and strong repair option

Great filler .. I used it on my center console to cover old holes and this stuff worked great. Dries in about 1 hr and is easy to sand.

This stuff is good. Cures really hard. Mixture ratio is a bit hard to find. I mixed by weight. But once cured it’s hard. Used it for a fiberglass hole repair. It’s harder then the original