Front steps settling
Our front steps (5 ft wide) were built on a concrete slab that is approximately 1 ft deep x 5 feet wide and is 6 inches thick. Unfortunately, the fill dirt was not properly compacted prior to installation in 2016 and the steps have settled and started pulling away from the porch. A few contractors have offered no good remedy. I have successfully jacked up the stairs on two occasions and filled underneath the concrete slab with gravel and that is helpful for about 1-2 years before it settles more.
1. Do you have a better suggestion for a way to fix this?
2. Could you recommend a particular spray foam that could be sprayed under the slab that would be waterproof and would provide structural support? It would not be easy to pour a foam solution due to narrow space.
I realize filling the void will be only a temporary fix until it settles more, but I’m thinking the foam would fill the gap better than me trying to stuff gravel under the slab.
Really appreciate any thoughts. Hopefully someone has dealt with something like this before.
Have you given a call to a sidewalk leveling company?
They could probably take off the bottom tread, drill their holes and fill.
I’ve seen it done but never had it done, so there’s your disclaimer.
Sorry to hear about the issue with your front steps. Here are some suggestions:
One option could be to remove the existing slab and properly compact the soil before pouring a new slab. This will ensure a solid foundation and prevent future settling issues. This may be a more expensive and time-consuming solution, but it will provide a long-term fix.
Spray foam could be an option to fill the void, but it's important to use a high-density, closed-cell foam that can provide structural support. It's also important to make sure the foam is waterproof and won't break down over time. One example of a spray foam that could work for this application is "GacoProFill" by Gaco Western. However, it's important to consult with a professional to determine if this is a suitable option for your specific situation.
Ultimately, it's best to consult with a licensed contractor or engineer to assess the situation and provide the best solution for your specific case. They will be able to evaluate the foundation and provide a long-term solution to prevent future settling.