You may have heard of slab jacking that uses a cement slurry to raise and level a sunken foundation, but chemical grouting may be new to you. Chemical grouting has been used for decades to lift slabs and stabilize soil. It's especially useful for stabilizing soil near the surface and for use in types of soil where cement grout isn't as effective. Chemical grout is also used alone or with other treatments for filling sinkholes.
A clay tile roof is durable and has a long life. That doesn't mean a tile roof won't leak and need repairs. If cracked tiles are patched before they break apart, you can save on the cost of repairs and minimize roof damage. However, if you first learn of roof trouble when water drips from the ceiling, you probably have more than a minor crack to repair. Here's a look at the process of repairing a leaky clay tile roof.