Sometimes accidents happen and when they do Blast Services is here to help. This particular job we were contracted to handle over a weekend during off hours. After lots of effort from the roofing contractor involved using pressure washers they gave up and called us. This was a job that we were happy with the results BUT media blasting cement can sometimes erode the paste layer and show too much aggregate. We were in and out in one full day on this one allowing business as usual to proceed come Monday.