Dexpan Customer Reviews
"I've used Dexpan on two different concrete demolition projects and it is very effective when used as instructed. Hole patterns are very important for achieving the desired result so that part is up to the user. Drilling holes, filling with demolition agent and letting it work overnite certainly beat using a jackhammer for hours !"
Rock in Basement
"The product worked really well and I didn't have to use a jack hammer.
Definitely made my life easier and the job was completed quickly and efficiently."
"I used Dexpan to break up some 18" x 18" concrete slabs that were cut out of a patio. The slabs were 3" to 4" thick. On the first slab, I drilled 1" diameter holes, about 3" deep. I drilled in steps, using Bosch Blue Granite drills. I used 1/4", 3/8", 1/2", 5/8", 3/4", and 1".
I tried to avoid breaking through to the bottom of the slab. In the cases where I did, I simply pounded a short piece from a 1" wood dowel into the hole to make a new bottom. Then I mixed a little of the Dexpan with water, and troweled it into the holes. Cracks appeared by the next morning. After a couple days, the cracks were 1/4" wide.
The longer you wait, the more Dexpan expands. If it doesn't appear to work at first, just wait another day or two.
I found that for the slabs, the minimum hole size I could get away with was 3/4" diameter. Then it took 3-4 days for large cracks to appear. The slab was completely broken up."
"I had some steps I wanted to remove. After starting the removal I found out the steps had been poured 2 to 4 feet deep. A borrowed jack hammer did not do the job, and after a day of work I looked for a solution. I found Dexpan. I could only drill 1" holes but it did the job easily. It did take more than 24 hours. I did need to do the bottom steps a second time because I did not drill a correct pattern for the crack to form. The second try worked great. This is a lot easier than a jack hammer or a sledge."
"Exceeded expectations. The 11 lb bucket was not enough to do the entire job; I bought the small bucket just to see if it would work. I used this on front steps, which are solid concrete with reinforced steel re-bar and netting. I did not use it exactly as instructed. I drilled 1 inch diameter holes and spaced them about every 8 inches; each hole was about 8 inches deep. The 11 lb bucket filled 38 holes (spilled a little). After 24 hours, there were a few very tiny cracks between the holes; the cracks became more numerous and larger each day I waited, after 1 week, the cracks were 1/4 - 1/2 inch wide and large chucks of concrete began to fall apart. See photo. I'm buying the 44 lb bag to do the rest."
"Drill Holes, Pour in Goop, Wait 24 hrs.
A company wanted $300 to remove this large piece of concrete. I did it for $40 with Dexpan. 100 times easier than using a jackhammer. It does what it's supposed to."
"I had a huge boulder in the way of the footing for an addition on our house.. The construction crew worked on it for several days with a backhoe and electric/pneumatic hammers. They couldn't get their hands on a breaker attachment for the backhoe. I bought an 11# bucket of Dexpan as a last ditch effort. I only had a 16" bit, and the boulder was much deeper than that, but I went ahead and drilled 7 holes 12-14" apart (farther than recommended, but I only had enough for 7 holes 16" deep). After 24 hours, there were no signs of cracking, but the next morning, there were 1/8" - 1/4" cracks joining all the holes and going out to the edge of the rock. The crew could then remove the smaller pieces without issue."
"I had a rock, aprox 12' X 12', who knows how deep, that I needed to remove part of for drainage. It was next to a building so blasting was out of the question. I had heard about Dexpan and tried it using a 2' drill. I started with drilling and filling 4 holes and was skeptical that this could actually break up solid rock. The next day when I looked at it, I could not believe how well it had worked. It had cracked in many directions from the holes and I easily removed the first couple feet of rock with my backhoe and repeated this process until the rock was down to where I needed it. This product was very easy to use and did what it claimed. I would recommend this to anyone who needs to break up rock or concrete.."
"This product is amazing.
The hardest part is drilling the holes (very dusty). Destruction of my concrete stairs was complete. I followed the instructions as close to the letter as possible and the product delivered.
My steps did have some 1/2 inch horizontal rebar which was no problem."
"I wanted to build a Koi pond in my backyard, but encountered giant boulders buried beneath the surface. I live on a mountain, mostly composed of solid granite rock. After days and weeks with a jackhammer and sledgehammer, I couldn't finish off some of the biggest, hardest rocks.
I purchased Dexpan and after it arrived, I rented a hammer drill and, following the directions, drilled holes into the rocks. The largest one featured here is a whopping 5 feet tall by about 4 feet wide.
After mixing and pouring the Dexpan, the rocks began cracking in just a couple hours. By morning, the rocks were fractured, some in larges pieces that had fallen apart (see the last picture).
This product does what only fire or dynamite could do in terms of demolition. However, this product, unlike the aforementioned, is safe, easy to use and quick to clean up.
I highly recommend this product."
"This product works exactly as described. I used it to split a few boulders that were probably about 8 feet in diameter.
I drilled 1.25" holes 18" deep on 12" spacing in the shape of a "+" sign across the top of the rock. Filled the holes with 2 bags of this miracle product and went away for a little getaway.
When I returned about 48 hours later, the rock was split into quarters exactly how I had intended. It was my first time using this stuff, but I could not be happier with the results."
"Dexpan works! I had 20 feet of 75 year old "blue stone" concrete wall to remove. The walls were 26 in. high, 5 ft. long, 14 - 16 inches wide. The walls flared out at the bottom. No rebar, but blue stone is very difficult to chip away using jack hammers.
Used a Bosch hammer drill to make the holes in the concrete. Started with a 3/4 inch pilot hole, and finished with a 1.5 in. carbide tip bit. I followed the instructions for drilling the holes, mixing the solution, and pouring it into the holes.
I got the results I was hoping for. Concrete demolition with much less noise and dust then the traditional method using jack hammers.
I'm happy! Neighbors are happy!
This product saved me hours of labor! I rented a compressor and chipping gun to use as a Plan B and I returned them the next day, unused!
I have 10 feet of wall left and I bought another box of Dexpan to take it down!
I have contractor friends and serious DIYers that were very impressed when they saw the results."