System Three RotFix Penetrating Epoxy Sealer, 1.5 Quarts

Easy to use. Works as intended

My husband likes everything about it. You can slowly rebuild a wood beam where it looks like there is no issues like it's a brand new piece of wood

I used this to repair some delaminations on a fifth wheel camper. Water intrusion had caused the luan plywood to fall apart and the fiberglass skin was coming off. I mixed this up and put about 100CCs per sq ft and then braced the fiberglass back in place with 2x4s and plywood. After curing it was as good as new. I also used this on part of the subfloor that had water damage and light rot. It is probably stronger than before. I recommend mixing this in a wide paper bowl. I tried mixing 1.5 oz in a cup and it got hot and cured way too fast. I used 16 gauge syringes to inject this in the desired area and it flowed through the needle fine. Once spread out over an area it cures fairly slowly allowing good penetration into rot. I will be buying this again to keep for future repairs. Very happy.

1:1 mix ratio

I have a really old house this is really wonderful stuff but it’s quite toxic! I used a sponge applicator first and that fell apart, I used an old paint brush for my next session and that was hardened when I went to apply more, so I moved onto an old toothbrush. All of the sudden I heard this hissing and smoke and the plastic from the toothbrush caused a reaction and the mixture was about ready to blow up in my hand! Really crazy I had to throw dirt on it to get the smoke to stop. So just beware what you use to apply this !!!

Its an excellent product to fix rotted wood, used it with the putty from the same company and completely restored my fascia board that was completely rotten and brokenJust be careful, don't mix too much of the resin together, it has a exothermic reaction that generates heat and obviously makes it difficult to handle.

This stuff turns squishy rotten wood into a solid wood looking plastic that you can drive screws through. I used it to fix the bottom of a rotting garage door and the base of a shed that had gotten some rot while I ignored them. For the price go with the larger bottle and worry about what else needs it later.The two removed stars are for the fact that it says it can be used on damp wood right here in the Amazon description, but both the packaging and the System Three Technical Support both say you can only use it on dry wood - specifically 20% or lower moisture content. Wood doesn't "feel" damp until 30% moisture content (according to the internet), so the line is outright misleading in the ad. This forced me to delay my project longer than I wanted and I had to rush it instead of having time to do it right.

if you have old or rotting wood, this stuff really does the trick. Infuses the old wood with a nice hard polymer that's easy to work. Highly recommend.