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 FlexClad™ is the flexible, weatherproof, economical, and easy-to-install protective solution for pipe and duct applications


Since 1961, MFM Building Products has been a manufacturer of innovative, waterproofing membranes for the HVAC/Insulation and construction industries.

FlexClad, designed specifically for HVAC ductwork and piping, is a water and weather-resistant, pre-fabricated, self-adhering, sheet-type protective membrane. The top surface is UV-resistant embossed aluminum that can be left exposed indefinitely, reflects heat and can aid in reducing energy costs.

Protecting Your Investment

  • Self-adhering or “self-stick” properties reduces material and labor costs

  • Self-sealing around punctures, pins, screws, flanges and banding

  • FlexClad resist water leaks and vapor transmission

  • Aluminum surface reflects heat to reduce energy costs

  • Preserves the efficiency and integrity of thermal insulation

  • 25 and 45 mil thickness options

  • Color choices of Aluminum, White and Almond

FlexClad™ provides superior protection for most pipe or duct systems, plenums and storage tanks, while saving time, material, labor and utility costs. Protect your investment by specifying FlexClad!

FlexClad is an easy-to-use, effective waterproofing barrier for HVAC ductwork and piping systems.

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MFM is proud to be an ESOP Company, where we take pride in providing the highest quality products available. Please contact MFM Customer Service at 800-882-7663 if you have any questions or need FlexClad pricing.