Cleaned the roof and noticed a few spots where the dicor looked like it was cracking. So ordered 4 tubes from Amazon. Waited for a nice sunny day and went to work. Scrubbed and the spots first then dicor. Went through one tube fast but that's all i needed
If you check yours dont forget to remove your vent covers. The one over the kitchen had several cracks. I didnt have any leaks and dont want any. Dicor is cheap insurance
Jerry