41700000 High Performance Wood Hardener, pint

I love this stuff and have used it for years! Its great for fighting dry-rot in thresholds, mouldings, door casings, and window frames. it makes a huge mess if you spill in though! I use a small mixing container and a 1/2" disposable brush to apply it generously and then give it plenty of time to seep in and dry. It works best in porous wood.

I was doing a repair project for my wife’s wooden porch swing. The arm rests had quite a bit of rot with one I thought would need replacing. I heard about Minwax Wood Hardener so I thought I’d give it a try before ripping pieces apart. I was pleasantly surprised at how well it actually worked. I followed the directions and it is amazing how stable the wood became. It took a little effort to shape one of the rests after applying a wood filler but with patience and a good sanding I got it right. I applied the hardener to one seat slat and a few other spots and it’s like concrete! I actually placed a couple of screws through some areas and it’s holding up. It saved me from having to buy limber and making saw cuts. You can even paint over it. Very satisfied.

I used this on a window sill that was starting to rot. It soaks into the wood and makes it hard enough to caulk and paint. Much easier than replacing a whole window.

This product is used to stabilize punky or slightly rotted wood. I use in wood turning when I want to stabilize a piece that has interesting color but is a bit soft. The hardener will soak in and must be allowed to dry before using. I have also used it for repairs (house, e.g. window frames usually on the bottom where water has caused some damage. Once the liquid has dried the wood has hardened and can be repaired if needed with corresponding filler product, sanded and refinished. Drill first if using screws. Liquid is very sticky and can be brushed on. I use two "coats" when the damage is extensive. The filler drys very hard so try to get the filling smooth and use two fillings if damage is deep.

Works great

if the decayed wood isn't structural but rather cosmetic, put this stuff, then DAP filler for a great, easy repair to be painted..... helps keep your landfill empty

I just worked on someone’s deck that a lot of wood areas that were literally rotten and were about ready to fall apart. Surprisingly, you can use this and its chemical bins with the wood and creates almost like a plastic sort of composite wood. You might have to do it a few times to get it to really soak in. After it’s all dry and then use a wood epoxy on top to level everything out. Now I’ve done this before and it’s lasted for years. It’s extremely durable. It definitely soaks in the wood, rot and hardens it up. Very impressed.

Good product. Just received an order of three bottles and one was leaking when I opened the box. It’s a hazmat and can’t be returned so I quickly opened the bottle and applied the 1/3 or so that was remaining. I’d like a refund for the damaged product but don’t see a clear way to request that. Shame. I will buy locally from now on.

Works well, easy to use, easy clean-up. Recommended

strength

Yep it worked

It does a good job of solidifying punky wood, and dries fast. It took half a can to deal with four picnic table legs, so it's not cheap.

Worked as expected ...