Roofing Guide
Flashing and Underlayment: Small Details That Protect the Roof
Ambia pays close attention to waterproofing underlayment, which is installed underneath the shingles in areas where extra protection is desired.
High wear areas like the valleys on the roof, around dormers, rakes, eaves and skylights are good places to put an extra barrier of protection against water leakage caused by ice damming and wind-driven rain.
Waterproofing underlayment is self-sealing so that it seals around nails providing a water tight barrier against moisture.
Chimney reflashing
Some roofing contractors will not reflash the chimney unless it is specified in the contract. It is time consuming work and takes a high degree of skill to flash a chimney properly.
A favorite line to get out of reflashing the chimney is, “Why fix something that ain’t broke?”
If you’re going to make the investment of getting a new roof system installed on your home, ensure that the contract specifies how the chimney will be handled.
