J-B Weld 40004 Wood Restore Repair Putty - 757mL

Bought to repair some tongue and groove enclosed porch floor boards and was very skeptical. I cleaned out all the rotten places and drilled holes and added wood stabilizer really well and let dry for several days then mixed up small batches of JB. About a golf ball size scoop and streamed a heavy line across it with the hardener and mixed for a minute with a scraper and started filling the areas that needed filled. I continued until everything was like I wanted. It was so easy. And worked great. Now to sand and paint.

I have a covered patio that had some wood rot. I saw this on a Youtube video and it was so easy to use I thought I would try it. It works exactly like it should. I removed as much of the rotted wood I could and mixed the putty together with the small bit of the activator and it worked great. Drys really quick and I was able to sand it and paint over it. You would never know that it was rotted before!!!

I just finished using a whole can of this stuff. I used it outdoors and is does have a significant chemical smell. Be sure and have windows open if you use it indoors. It handles well and has good adhesion. It is thick/stiff enough than it holds its shape pretty well if you work it a bit until it sets up (about 15 minutes). The only thing I will fault is that the hardener that comes in a small tube is hard to tell when it is well mixed. The hardener is a skinny white line and the base is grey. I mixed them but there was no color change so it was hard to know when it was blended enough. That was why I gave it a four instead of five stars. I had a big hole to build up and this was great.

Great product

Material is super tough and versatile. A good choice.

This worked perfect after trying different types of wood filler/putty to fix a window that was cut snaller on one side. Pro tip -Use painter's tape where possible to make less mess and perfect lines and use a an electric sander. It sands right out with no problem.

I have used this product several times before and it worked great. It always came in two cans of equal putty and hardener and was easy to work with. This time it came with a can of putty and a small tube of hardener which had leaked out about 30%. The putty is very watery and hard to work with for my application.

This works well (and got the job done) but is just body filler with white hardener instead of red or blue. smells a lot worse that any wood filler that I know of.