FLASHING & DRAINS
Custom flashing and drainage installation to prevent water intrusion and protect structural integrity.
FLASHING & DRAINS
Flashing at deck edges, walls, and other transitions stops water from getting behind the framing, while drains and sloped drainage carry water off the surface and away from the structure below. Our estimators can identify points where this has previously been left unaddressed, where water has pooled and worked its way into the framing leading to rot and structural damage.
Best for: Ledger board connections, elevated decks, walkways, and any transition where water needs to be redirected away from the structure.
everything covered under this service
Deck edge and wall flashing installation and repair
Kickout flashing at roof-to-wall and deck-to-wall transitions
Surface and scupper drain installation for decks and walkways
Sloped drainage systems that direct water away from the structure
Sealant and waterproof membrane integration at every flashing joint
Inspection and repair of existing flashing and drains showing leaks or corrosion
HOW WE APPROACH EVERY FLASHING & DRAINS PROJECT
01
Free Estimate & Leak Diagnosis
We inspect existing flashing, drains and any signs of water damage to pinpoint exactly where water is getting in.
02
Custom Drainage Plan
You get a clear scope and cost, matched to the flashing and drainage your structure actually needs.
03
Prep & Installation
Our crews install new flashing and drain systems, integrating waterproof membranes at every joint and transition.
04
Final Walkthrough
We inspect the finished work with you and back it with National’s eight year material and labor warranty, in addition to the manufacturer material warranty.
Every step of the project is documented with photographs, which are provided to the customers upon completion.
OFTEN PAIRED WITH FLASHING & DRAINS
Other Decks, Courtyards & Patios
Courtyards, rooftop decks, entryways and patios, get custom waterproofing for any exterior deck surface.
Coating Applications
High performance waterproof coatings designed to protect, seal and extend the life of deck and balcony surfaces.
Balconies
Leak-proof balcony coatings that protect the unit below, extend the life of the structure and last for years.
READY TO GET STARTED ON YOUR FLASHING & DRAINS PROJECT?
Get a free estimate from a crew that diagnoses the problem before recommending a fix.