WoodEpox 2 Gallon Kit– 2-Part Structural Epoxy Wood Replacement Compound. Shrink-Free Wood Filler That Repairs and Rebuilds Missing Wood

This stuff is amazing. Two the proper prep (per instructions), mix correctly, and apply - it's that easy. Surface is extremely durable. Have used multiple times including a 2x6 trailer deck that had rotted away - after proper prep (2 part Abatron product) you fill in with this like working with playdough - it's a great product.

I used this to repair some decking trusses/underboards that were beginning to rot. In conjunction with a wood hardener, I used this epoxy to fill in the areas that had started breaking down. It created a solid, seamless repair, and I was able to reinstall the decking on top. I anticipate this will prolong the life of my deck for another couple of decades.

This stuff is the bomb! I rebuilt my rotted out windowsills with this stuff! Get creative! Dries hard, long lasting. So far it’s been great - three years in!

Saved me money an time and is lasting so far

This is a very good product, and a fantastic deal for this quantity (about 2 gallons by volume) for such a strong epoxy. It is a little different than other epoxies I've used. It is clearly strong enough for structural use, (this is not explicitly stated,but PSI endurance is obviously very high), and it is completely weatherproof, after a few hours, and becomes drill-able, sand-able, & paint-able. It's not exactly like other epoxies I've used: when you start to mix it, it is more like cake, so don't try to stir the ingredients together. It is best to place equal parts of each onto a piece if tin foil, and pick them up an repeatedly fold the two parts by hand, until the colors have blended completely. After blending, it will be like a firm putty, but a little too firm to "spread" like peanut-butter would. So it's better to form the shape you want in your hands, and press the shape into place. I suggest testing how it works with a golf-ball size test-sample to see how it cures and shapes. When you make your first batch, start with about the total size no larger then two hamburgers (a burger from each bucket). You can always add more as you go. Be advised that the mixing of the two parts generates its own chemical-heat (the directions mention this), and so thicker pieces generate and retain more heat, and therefore thicker cures quicker. Doctor's latex gloves would be fine. A trowel or spackle-knife didn't work very well for me, because it does not spread well. It is very good for vertical applications, because it will not slump the way softer putties might. A small con is that oil-base paint dries very slowly on it, (the directions mention this) and so the paint will dry but might never cure/harden optimally. You might try sanding to rough up the surface before applying oil-base paint, and do some trial-and error with your sample pieces to get a feel for how paint takes to it, if that is critical. Overall, I am very pleased with this, but like I said, it takes a little experience to get a feel for it. Definitely play with a small sample or two. It cures in a couple hours, so not a huge time-investment, to learn it, and worth it. If you are using this to repair rotted wood, buy their liquid wood product, and read all instructions carefully. This stuff saved me thousands, offsetting possible structural repairs in a complex application.