In cases like this I think you are better off renting a concrete grinder. The tree root is just going to lift the sidewalk again. Just grind the raised portion. After a few times you'll have to cut out the lifted up portion of the sidewalk, trim the roots and re-pour. Just life in the big city.
Thanks for the testimony. I like this solution, but after reading some negative comments here, I wasn't sure. Some of these negative comments were really off base. I will take the naysayers with a grain of salt.
You were applying (brushing on) more of the 'bonding' solution right before you started adding concrete. Doesn't the instructions on the bonding solution say to let it dry for 2-3 hours before applying the concrete mix? Like to hear your comment.
My 3.5× 3.0×m ×15cm concrete slabs have become vertically misaligned 1-4cm, most likely by the roots from a large neighbouring tree. I am thinking of repairing this the was you demonstrated with your foot path slabs. Could you recommend a good bonding primer for me to use. Thank you for your well presented work. Subscribed. Bloke from Aus.
I thought sidewalks were the cities problem, call them to do it. If you must do it then why not either: 1. Lift up the low slap and put dirt, sand, gravel to make it angle up to the other. 2. Move the high slab and remove the root followed by leveling the groung and place the slab back. Just because a hammer can solve one problem doesn't mean all problems can or should be soved by one.
can i do something like this on top of an old concrete curb to make it smooth? i ntend to grind the hell out of it with my skateboard so the slippery is a good thing. i tried rub bricking it and its not grinding down the rocks that are showing through
Done properly, many years. That mix + the bonding adhesive is engineered for doing exactly this. Surface prep is key and picking a product that is make to brush out to a feather edge. Also, using the edging trowl along the sides and especially along the expansion joint will keep it forn cracking due to expansion/contraction of the adjoining slab.
Why would you do this as opposed to lifting the cement back up with foam? The reason it has sunk in the first place is because the dirt has dispersed and left voids underneath.
Here's an honest question: why did you choose this method and not drilling 9 holes in the slab with a mason bit and use foam filler with 2X4 as your leveling guide? It would've cost less.
You're right, but where do you draw the line? In this case they would have to remove the tree and roots and remove concrete then replace. But there's about 20 big trees on that property causing damage. The proper thing to do is remove all the trees, replace all the sidewalks replace all the damaged and affected sewer lines, replace all affected sidewalks. Then someone would say, instead of having all these patched sidewalks you should replace all sidewalks and make them 6 foot wide so if 2 wheelchair need to use at the same time they can. Then the city would come and say you need to replace all the trees you removed. At the end of the project between tree remove, concrete replace, plumbing repairs ect ect. It would be a very costly repair. (To do it right) . I'm not saying it's not the right thing to do, all I'm trying to say that most tenants would be mad because of the rent increases. Affordable housing is getting harder and harder to get.
Sometimes you're working with homeowners budget If you explained that it was temporary fix and would need to be fix for 5k just for HOA compliance looks good to me
Yes. Also he should have added expansion joint between the two slabs, bc the tree roots will continue to move the original slab and what do you think will happen to that little ramp….it’ll just break away. The technique was good but that was a little bit amateur. 20 yrs exp should have known better.
