Serving WA • OR • ID • MT • AK — MG products also in Canada
Call us: 360-703-2960
MG Manufactured • Leak Control

Flash Dam: Stop the Leak Instantly. Finish the Job Efficiently.

Flash Dam is the instant temporary water dam that controls active roof leaks — even on wet surfaces, even in the rain. Roofs don’t leak until it rains; Flash Dam lets you work when it matters.

How It Works

Three Steps to a Dry, Workable Repair Area

Pour & Position

Apply Flash Dam powder around the leak path. The powder adheres to wet surfaces and forms a ridge.

Water Activates the Barrier

As water touches Flash Dam, it reacts and creates a temporary dam that redirects and contains water flow.

Clean, Prep & Repair

With water controlled, the surface becomes workable. Properly clean and repair the roof — even during rain.

Old Way vs. Flash Dam

Why Crews Switch

The Old WayWith Flash Dam
Two guys and a blowerOne tech, one truck
Tarps… more ponding waterWatertight ridge forms instantly
Slippery surfaces, towels, bucketsSafe, dry workspace at the source
Uncontrolled interior damageReduced interior damage
Client frustrationProfessional, confident service
Who Uses It

Four Audiences, One Product

Roofing Contractors

Stop active leaks and perform repairs during storms.

Property & Facility Managers

Protect assets and maintain operations during water emergencies.

Maintenance Teams

Contain water in industrial, retail, and warehouse environments.

Insurance & Restoration

Reduce secondary damage and accelerate drying & restoration.

Every service truck in the rain belt needs Flash Dam on board.

Ask your distributor for Flash Dam, or contact us for stocking and training programs.

Get Flash Dam