I love the ingenuity of preventing dust from making its way to the lungs! I am going to copy this anytime I drill and create dust. This should be standard safety practice for drilling and it is much more effective than an ordinary mask and definitely far more convenient.
I'd love to see a follow-up video on the state of this project a year from now. My guess is that over time the walk way will sink back down due to the foam collapsing.
How do you prevent overshooting and it expanding to much? Anytime I’ve used gap filler foam for other applications the expansion seems unpredictable and varies.
I paid over $2,000 to carolina basement systems to raise cracked and sunk driveway pad and back sidewalk. They say that the foam they use is different because of the addition of a hardener that keeps the foam from compressing over time. The tech managed to raise the slab and even it out but when done, the driveway and sidewalk slope toward the house still and he said that it is by design..... yes, I have a basement and no, if I end up with water damage, I certainly will not use them to address it.
Its unfortunate you had this experience but many of the "foundation & crawl specialists" that add this service are not properly trained or have the experience. Lifting concrete is the only service I provide and would not have left the grade towards house/structure.
I don't want to assume or judge the company too hard based on one comment. *If* this was the case (incorrect grade done by the home builder), proper communication with the customer should have been done to explain what the end results will be. Customer expectations are the most important factor for a job to be "successful". A happy customer is a repeat customer.
See I was wondering if this was the same stuff people charge thousands to do. Thanks for this content. You literally saved people thousands of dollars for putting this on the tube. Much appreciated
Most used cement under pressure to lift the slabs meaning you need a pumper and the right cement obviously it can't have big aggregate if you're pumping it through a small hole for concrete I'd imagine that'd be at least an inch diameter what do I know I know nothing
@@chauvinemmons wish I could post pics. But I used this on my patio in front of my house and it worked too lift the corner that was sinking. This is a 10x12 ft solid old pad too.
My wife sent me a text the other day, a picture of a snake peeking it's head out of a the gap between the garage slab and the driveway. She won't even go in the garage now. She's thinks the garden snake will be in there to get her. I am concerned that somehow erosion has taken some soil away from the area under the driveway. So I've been thinking of how I could fill that area. Spray foam had not entered my mind. Maybe the evil RU-vid was listening to my thoughts again, but I ended up here and now I can't think of a better solution to my "snake problem". My wife is going to be elated. Thanks! As for this sidewalk, it could look better if you used one of those $25 circular pressure washer attachments. I bought one to clean the mildew-mold stuff from the north side of my house. But it also really worked great on my sidewalks and driveway.
This great stuff foam is great stuff if you plan on using it to insulate a big dog house be sure to put a roof on last and leave the top of the walls open or it with rip the screws through the wood and pop the walls apart its expansion is crazy and powerful
🤔You would think that you would have to have a void underneath the concrete to fill up with the foam also the foam doesn’t begin to expand unless it begins to dry I think the only thing that’s missing from this experiment is all the snow on the ground :-)
Did you refill the drilled holes with concrete? And was the problem of the continued erosion resolved? Other words, you lifted the concrete but did you also solve the future issues of continued erosion?
I really like seeing your organized approach.....planning and thinking ahead. Calm, organized, neat and clean. I like the music too. I'm wondering if there are different types of foam, namely that some might continue expanding even after you have 'pulled the plug'.
I would thumbs up this video if the author would state how many seconds he set his timelapse for on the concrete-rise-timelapses part! Like is that one picture per 5 seconds or one picture per minute or what!?
Tried this it didn’t lift a thing. Not sure if my holes were too deep. I used the black can because I have a 2.75” slope away from my porch. Not sure if I have to look at it after 24 hours but all in all I had to go another route
The black label great stuff need to be exposed to air/moisture to cure. Using this like shown here won't allow it to harden. The best option for this is a two-part approach that hardens due to a chemical reaction and not be reliant on moisture or air exposure. Good luck getting your problem solved.
@@SoccerPhoto Thanks ended up jacking the slab on one side because the other side butts up to my porch. Then I redrilled the holes and sprayed the great stuff and it worked
That is what the string was used for. It shows you the lost points of the slab and provides a location to drill the holes. Lowest point equals more holes or at least a good starting point.
I got estimates from several companies between $3-6k to level up my driveway. A few sections sank causing the opposite corners to rise. I couldn’t afford to hire them. Do you think the can spray foam could raise a much larger slab? 8’x12’ roughly about 1” in the sunken corner thus lowering the high spots?
I'm looking at a similar repair. I think that you might need higher pressure (than spray cans) to force the foam under such a heavy load. Here is an interesting way to lift a heavy section with a bottle jack: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-THHiby5TGWc.html I am thinking about lifting first, then filling the void with foam. The trade-off is needing to repair the hole. You can possibly avoid the hole with two jacks and a longer support beam.
@@MLSgeek Thank you for this recommendation. I was thinking before along the line of jacking but couldn’t figure out how to make it work but this makes sense. I’ll take a few holes over the big trip hazard.
@@MrWatsonComeHere If it were me, I would simply drill further down with a longer concrete bit. More volume of foam will increase the pressure. Results may vary of course. You could hit a gas line or anything under the slab. Who knows? I would have utilities check it out before doing anything. It's a free check. They will flag your whole yard for buried stuff.
I priced this out with a commercial poly jacking company and they would have charged about $1K for what you did for under $100! It's definitely worth going this route to save a few bucks!
Only difference is we use a foam that won't degrade after one year and sets up faster with a better quality and will last much much longer depends on where you live and the type of climate.
@@johnstaton5524 Polyurethane is polyurethane. This won't break down. Concrete slab lifting foam is made from polyurethane. Are you sure you weren't referring to mud jacking? Using his method is cheap and will work. Will it last lifetimes? No, not in this instance because he simply didn't drill deep enough. If he had gone down a foot or so and done the same thing he did here, it would last long after the house was gone. Will it last a lifetime? Most likely. Regardless of the foam used, the longevity of it all depends on the soil conditions.
@@billthompson8182 At home Depot they advertise different foams like UV resistant, etc. They have at least one brand that is supposedly better than the one used in the video. Like you said they might all be the same though idk.
There are higher density foams for lifting concrete slabs, specifically made for that application. I wonder how long a cheap can of expanding foam insulation will last. Maybe not long after insects find it makes a great nesting place. Higher density foam is impenetrable, as it's rock hard when cured. Lower density foams can crumble away under pressure or shock. If you're going through all the trouble of lifting a slab, use the right foam.
@@ericr154 Well he was savvy enough to post this video. A simple internet search would have pointed him in the right direction on what to use. I did the same with a slab but used Secure Set Foam. I had some left over and used around and under some tall landscape lights I have that seemed to never stay plumb. Now they do!
Pitiful, and so very American! It appears we just don't know how to make videos! Why the horrible intrusive music instead of talking to us and educating us? Best of luck, but this is a rather awful format!
Ridiculous, inane, sophomoric "music" earns a dislike for an otherwise worthy video Why not just narate? Or just have the audio recording of the process sounds would be infinitely better.
Spraying toxic foam into the ground is absolutely unnecessary and bad for the environment. I'm showing this video to my local EPA reps I actually believe this guy will be receiving a major fine for this.
You do realize that most utility poles, bridge pillars, etc... that are in-ground installations now use some form of foam fill for the hole and NOT concrete right? I haven't seen a utility company backfill with concrete in 10 years, especially in austere locations where you would literally have to helicopter in tons of concrete!
