Job Example of Post-Construction Drip Edge Installation
What We Do
Slates were falling from this roof because the decking could not hold the nails. Sideways rain The decking had rotted which prevent the nails from having a grip. As the decking rotted, the nails holding the slate began to lose their grip and slid down. Water then made its way between the keyways further rotting the decking causing the damage to compound.
The solution to this problem was to install post construction drip edge. This is more complicated than installing drip edge before the roof is put on because it requires taking everything off around the perimeter of the roof before installation and then putting everything back.
First, we extracted first two courses of slate and starters and replace the 1x6 decking boards. Then we installed the copper drip edge in place, added a cant strip, and adhered ice and water shield on top of the drip edge. The combination of ice and water shield on top of drip edge prevents decking damage from a sideways rain or ice damming.
Afterwards we installed the slate back in place using stainless steel slate hooks so there were no penetrations in the slate that water could ride into the attic.
This process took us a week to install the drip edge around the whole roof.