PC Products PC-Petrifier Water-Based Wood Hardener, 16 oz, Milky White 164440

I pressure washed my deck after using deck cleaner to prep for staining. To my surprise I had a couple small sections of my pressure treated deck board with rot spots. The rest of the 10 foot board was perfect, just a 5 in spit of rot. I really didn't want to replace the board with s new pressure treated board due to the fact I wouldn't be able to stain it right away, so my deck would look unfinished. After some research I came across this wood hardener. I was very skeptical, because I never heard of anything that could fix rotted wood. I did one coat amd waited 24 hours to check, the rot seems to be someone more dense. After the second coat the rooted section was rock solid, I really can't believe this product. This product does fix wood rot and I would recommend 2 coats, but it definitely works. I still can't believe it, a product that stops rot in it's tracks.

Works beautifully as it always does.

Clever. It does work to firm/harden rotten wood for cosmetic repairs, but not structural repairs. You scratch out as much rotten wood as possible, then apply this. Let it dry, then use putty filler or fiberglass, etc.It is actually a type of thinned penetrating wood glue. It doesn't kill bacteria that is rotting the wood. A simple solution for cosmetic repairs. Not magic.

Using this to stabilize old rotted timbers on a 100-year-old Tudor-style exterior. I had been using the Bondo wood stabilizer, which is a good product but it's spirit-based and smells awful and not good to breathe.This product is water based but still manages to absorb into the wood very effectively. Dries overnight (the Bondo product is faster, a couple of hours) You can kind of squirt it on a horizontal surface and brush it in. For vertical surface, I have found that the best method is to pour a little of this stuff into a party cup and use a cheap bristle brush (1 inch artist's brush works well) and just kind of dab it into the wood.The main purpose of this product is to harden the surface of rotted wood so there's a stable base for an epoxy putty (bondo or any of the specialty play-doh type putties.) which you use to fill the holes and recreate the shape of the wood. The putty itself is rock hard so it needs something hard to hold on to, otherwise the whole thing would fall apart when you shape and sand the hardened putty.Anyway I like this and the price (while not cheap) seems reasonable. This bottle will probably handle 5 or 5 square feet of wood surface that needs to be treated.

I used in a tank sprayer on the rotten ends of my redwood deck boards. I'll see this winter if it actually works. Easy water cleanup.

Easy to use and hardens the rotten joists up well. First I cleared any loose rotten wood. I applied the hardener with a paint brush. It was easy to use and hardens up quickly. Overall I'm very happy with my purchase.

I'm baffled buy the high rating. I decided to try this over the other brand I typically use, and it's not as good. It takes about 3 coats to develop any rigidity.

I am repairing 125 year old rotted wood old growth fir window sills. PC Hardener soaks right into the wood and hardens in a few hours. After it drys you can tell if you missed a spot by sticking your finger nail or a screw driver in to see if in resists. Easy to apply to a horizontal surface. You need a brush for vertical surfaces where it tends to drip or narrower areas like window trim that is fluted. I bought a box of cheap chip brushes to work with the hardener. Virtually no odor! I bought the smaller size 32 oz to see how it worked and how far it would go. Photos are before and after on west and east facing windows and typical of the rotted weathered sills on my house [30" wide 6" deep] with deep cracks, some of which go almost al the way trough 2" thick wood. One 32oz container hardened four window sills and the 24oz PC Woody epoxy filler set was enough to fill those four sills. Easy to clean up spatulas and hands with denatured alcohol. Easy to sand the epoxy with 80 grit sandpaper. It feels like a great surface to paint too.