When brick or stacked stone loses its bond, it will definitely become loose and eventually fall. Fortunately, you can reattach the stone easily, as shown in this video. The first step after removing and before reattaching the loose stone is to scrape off all of the loose mortar on the backing and the surrounding.
You will need a grout mixture or mixed cement mortar for the job. Mix the mixture to a toothpaste consistency so that it does not flow out too quickly when you put it into the grout bag.
It should also not be too hard to squeeze. After that, reattach the stone to the backing by applying the grout mixture. Hold it in place for a short while. Regrout all the crevices to prevent water seepage after you finish applying the adhesive.
The stone will take a few days to reattach firmly to the backing. You will also need to hold the reattached stone in place for a more extended period using something to press on it to ensure it sticks. Even though reattaching stacked stone is not complicated, hire building stone service specialized in building, repairing and maintaining stone structures for the best results.
