Perfect product to get us past a home inspection

Before spraying this on a piece of plywood that I wanted to protect, I sprayed it on a big piece of corrugated cardboard. Which is what I use as kindling to start fires. And then I tried to light it with an Aim & Flame. It did not burn. I don't know how it works, and it's a tad pricey, but if you want to make something fireproof, this stuff seems to get the job done. I also mixed it with some primer on another project (which they say you can do). Made the paint thinner, which I expected. But then it started to really thicken up after awhile, like Thompson's waterproofing product. I applied it, and it went on fine, but a little grainy. I assumed from this that it has some active ingredients that really harden surfaces and paint. So I think this was a good buy. If it ever has to stop a fire, it's a great buy.

I bought this to mix with paint to paint my exposed basement posts, beams, and joists. I mixed a full gallon of this with a little less than a gallon of latex paint.

I did a couple tests on some scrap boards first, and it didn't work when I first tried it, but I missed the part about waiting 24 hours. Tried it again the next day and board turned a little brown, but would not burn and hardly even smoked. This seems to work exactly as described and is way better than nothing.

I used a small foam roller to apply this to the exposed wood in my basement, to give it a nicer finished look, while adding fire protection without having to wrap everything in a bunch of drywall. This product makes the paint super thin and watery, and it drips EVERYWHERE, so I ended up masking things off almost as much as i would have if spraying. Also, because of how thin it is, it takes many many coats to achieve a uniform opaque color. I think I did 5 coats before I couldn't see the old paint colors where some of the wood had been painted decades ago.

This product also separates from paint really easily, so you have to keep mixing it throughout your project if using very much. It probably separates as much as 90% after sitting for just an hour, and after being left overnight I could probably pour the Master Flame back into the bottle, leaving the paint behind.

I'm glad i found this product as it's saving me from having to wrap things in metal or drywall, and gave me justification for painting the entire basement ceiling (instead of just the areas that were previously painted blue, green, or cream. I used up the first jug and just bought another, I'll probably need a 3rd to finish the entire project, it's an 1100sf basement with 100 year old wood that sucks up the first 2 coats of paint.

I took 1 star off for how thin it makes the paint and how quickly it separates. It would be nice if they had a thickening agent you could add or they could get it to bond with the paint.

I mixed this 50/50 with some left over latex ceiling paint and applied it to the kraft paper backing found on insulation. It will be many years before I sheet rock the walls in our basement and was worried the kraft paper backing posed a substantial fire hazard.
A test of my 50/50 mixture on a scrap piece of insulation showed this stuff works! An untreated piece of kraft paper burned immediately, and once ignited stayed burning. The treated (painted) sample would not ignite...I used a barbecue starter torch and the best I could get was a smolder that extinguished as soon as the flame was removed.
This stuff is not inexpensive - but works as advertised. My application was residential so I did not need to get the Fire Marshall involved - but it did seem a bit difficult to find the paperwork for this on the companies web site. If your application must pass an inspection I'd recommend downloading and printing the spec sheets first - showing it to your local Fire Marshall or inspector - and making sure this paperwork is sufficient to pass.

Did not stain anything that i sprayed