Rated 4.7 out of 5 by 72
Rated 5.0 out of 5.0 by Docwoodshop Converts to hard-as-nail surface.
Covered the entire frame of my flat bed trailer that is 25 years old. Scraped of flakey rust and brushed of surface rust with wire brush. Applied Corroseal and within minutes the rust started converting to black primed surface. After 24 hours I painted frame with Rustolium oil based black. This stuff is awesome. It does what it claims it can do.
September 19, 2013
Rated 5.0 out of 5.0 by RustKiller Great product
This product does what it is supposed to do exactly!
This saved a roof that would have cost 10's of thousands to replace.
I highly recommend this product for rust repair. Love it!
We ended up using 15 gallons and covered that with 20 gallons of Diamond Brite Paint.
Looks great now!
July 9, 2014
Rated 5.0 out of 5.0 by mrchips Excellent product and support
I used this for the roof on my 15 year old van with a galvanized body (the roof rusted anyway in the Florida sun & humidity!). Unlike 'automotive' grade rust converters this was one step (one product).
First I pressured washed the roof real well (which seems to be preferred over sanding), used a mini-grinder with knotted wire wheel on the rusted-through spots, then sprayed this on the entire roof. I used an HVLP (turbine type) with a large tip, 2.0 or 2.5 sorry I can't remember. Directly to bare 'clean' galvanized metal that hadn't rusted, the old paint, and rust from light to rusted-through. The heavy rust turned black right away, but took overnight for the light rust to turn black but it did. Then I fiberglassed the holes and sprayed another coat. When that was dry I painted, no primer needed.
I then used a garden sprayer to spray on the inside near the rain gutters so I got both sides of the rusted areas coated. This stuff is water based and cleans up fairly easily, just make sure you get it ALL out of your equipment before it dries.
Tech support at Corroseal was great! I has some issues because of 100% humidity and dense fog warnings 'till 10 am the nights after I applied but letting it bake in the sun, as per support fixed it!
I decided on Corroseal because if I used an automotive grade I would have had to use two, maybe three different products: a primer for the bare metal, the converter, then a sealer on top of that. Corroseal worked on everything: bare metal, old paint, rust, AND fiberglass. On top or underneath!
And, according to Corroseal, the US Navy uses it so that's good enough for me!
NOTE - the original color of the van is dark blue, almost black. Keep that in mind when looking at the pictures.
April 4, 2015
Rated 5.0 out of 5.0 by 58Chevy Very happy with this product
I had read reviews before my purchase. I am glad I did. Using a chip brush to apply the rust converter onto the surfaces was a very good suggestion. I am redoing the interior and trunk on a 1958 Chevy. There were lots of surface rust. I was able to treat the entire floor pan (front/back), four doors, interior roof and trunk with less than 3/4 gallon. Brushing allowed me to make a good even coverage and get the most out of the amount used. This was easy to apply and worked as described. I am attaching photos showing the rust on the floor, Corroseal applied-dried and after spraying primer paint.
January 26, 2015
Rated 5.0 out of 5.0 by Redbull42 Handled the job very well!
This rust converter primer works just as described, it went on with a sprayer very well and was easy to see what areas I had covered and what areas I missed as I looked back over the trailer I was painting. I used one gallon to spray the entire 15 ft long x 8 ft wide utility trailer, bottom to top, before applying a top coat. I would definitely use this product again.
August 27, 2014
Rated 5.0 out of 5.0 by AP71 Excellent rust fighter
It won't work miracles, but Corroseal certainly does an excellent job of combating surface rust by converting it to a protective layer of magnetite. I have used it to restore a wheelbarrow and several hand tools that I thought I would have to throw out because of rust, and am in the process of covering my vehicle's frame as well (the road salt from a dozen winters will do a number on any vehicle). When applied smoothly and consistently, it'll leave a clean-looking surface behind.
Once the metal is rusted through, there's really nothing you can do to bring it back, but if it's not quite at that point yet, Corroseal will convert the rust on contact, thus providing a protective barrier for the metal underneath. Sometimes rust is just plain avoidable, but Corroseal can do quite a bit to slow down and even reverse damage. A gallon is more than enough for most household uses.
All in all, I'm quite glad I discovered this product.
April 30, 2013
Rated 1.0 out of 5.0 by sr210br Check the date code on product
This is probably an isolated incident but my $60 bottle of rust converter was defective. Instructions on bottle are poorly written and in tiny print. Half of contents was solidified and not mixable. Cut open bottle in an attempt to mix product but impossible to do so. Cant return a cut open bottle. I will not order this type of product online again.
February 11, 2015
Rated 4.0 out of 5.0 by KauaiKid Goes on fine and converts. time will tell if it lasts
Just finished painting rails and fenders of my antique car.
Scraped loose paint and crud and lightly wire-brushed rust.
It produced smooth, hard, black, surface.
Next step is to paint with spray can of best black automotive enamel (per directions on Corroseal jug)
I don't drive the car in the rain except on rare occasions and I am thinking the corrosealed areas will last way beyond my lifetime.
At $50 some dollars a gallon it is only a bit more expensive than good paint and certainly worth the difference when you figure you have to prep down the bare metal when using paint. The time and effort saved by using Corroseal is incredible.
Cons: Why doesn't Home Depot sell it in the store?
September 18, 2013