Browsing all posts in "National roofing Contractors Association".
The Evils of Ponding Water
What is ponding water? Ponding water as defined by the NRCA, National Roofing Contractors Association, as water that remains on a roof surface longer than 48 hours after the termination of the most recent rain event. Long-term ponding water on a roof surface is one of the most destructive conditions that can adversely affect [...]
