Don't wait for the next rainstorm. Identify your roof's vulnerabilities now. A $20 can of this polymer can save you $2,000 in water damage restoration and mold remediation.

It is not a replacement for a full roof replacement, nor is it a substitute for a skilled roofer's work on complex valleys or dormers. However, for the specific problem of the —the small split near a nail head, the gap around a vent pipe, the seam in the flashing—this is the fastest, most reliable instant fix on the market today.

By: Construction & Home Repair Journal