There is a large void under the slab of the garage where it meets the asphalt parking lot. Not really sure how the void developed but the opening to it is as big as your foot, and it's size I would guess in the one cubic yard range. I guess I could fill it in with sand or gravel but that wouldn't get it all the way to the top. What about expanding foam like: [url]https://www.youtube.com/watch?v=gWJvrhZlzaM[/url] Is this a DIY fix? If not, what companies do this service?

Hey folks! 13 year old house, and about 12 years ago I had interlock put on the steps. The top step is a concrete slab and the brick you see on the walls went flush to the slab (pic attached). Unfortunately, the interlock company didn't really consider the weeping, or didn't think it would be an issue, and as you can see from the attached picture, there's some issues (see staining in pic). Over the winter I have some stress cracks in the mortar that follow the pattern of the staining -- up to 1/4" in worst cases. It all settled back to be mostly "hairline" now. I've had a trusted/known/reputable local masonry company come in, and their quote is to remove the pavers along the edge, remove the bottom 2-3 rows of wall brick and put in blocks, redo the weeping and wrap. Basically -- move the brick above the paver grade and parge it around to make it all look like foundation. Ditto to remove the brick around door base and put a decorative concrete block there. All for the low price of $9k (Ontario canada pricing). I'm struggling with the price, it's about double what I was expecting for a job like this. They're saying this is a multi person job for several days I'm also really surprised this isn't a more common issue and wondering if there's some simpler solution. Maybe lifting those pavers on the edge and cutting in a "drain tile" line along the edge or something along those lines. Again, I'm in a temp extreme environment -- winters go to -20 (0f) for extended periods, and summers well into the 30's (100f) fwiw. Any thoughts?