Liquid Flashing Systems

Liquid Flashing Systems

Avalon Roofing is a strong advocate for the use of Liquid Flashing Systems over conventional metal-flashing components.  We find these flashing systems to be a critical component to high-performing roof system, that’s easily maintained, and virtually corrosion resistant.

The following are answers to common questions we are asked about Liquid Flashing Systems.


What is a Liquid Flashing and how does it differ from regular flashings?

  • Regular or Conventional flashings are typically a piece of sheet metal that is used to cover and protect angles, joints, and voids in the building structure from the passage of water.  Conventional flashings are made in various shapes and thickness from the following metals:  aluminium, copper, painted galvanized steel, stainless steel, zinc alloy, terne metal, lead or lead-coated copper.
  • Liquid Flashing Systems are essentially a high-performance, non-hardening, non-shrinking, liquid sealants that are combined with a reinforcing agent such as polyester fabric or fiberglass.  Multiple layers of sealant and fabric are redundantly applied until the detail is 100% waterproof.


What are the benefits?

  • Liquid Flashing Systems eliminate premature failure due to corrosion of metals and sealants; ensuring a longer lasting roof systems with lower maintenance requirements and associated repair costs.
  • Liquid Flashing Systems are extremely versatile, durable, and are designed to waterproof almost anything.  They are a proven long-term solution for difficult waterproofing applications.
  • Avalon Roofing can extend a Manufacturer “No Dollar Limit” Warranty on GAF, Malarkey, and HydroStop roof systems when their Liquid Flashing Systems are incorporated as part of an “NDL Spec”.

How much extra will it cost?

  • Liquid Flashing Systems are an upgrade that cost 30% more than galvanized flashings and 20% less than copper flashing.
  • For most roofing projects, the overall cost increase associated with Liquid Flashing Systems varies from 1% – 5% of total job cost.
  • The cost for not using a Liquid Flashing Detail ???

We hope that the information provided answered most if not all of your questions.  If not, please send us your responses and any additional questions o may have.

Avalon Roofing is a Factory Certified Installer for the following Manufacturers: GAF, Malarkey, & HydroStop

Visit these links for additional product and application information:

GAF | MajorSeal | Installation

Malarkey | EZ Seal

HydroStop | PremiumCoat System

Installation Video: HydroStop | Liquid Flashing






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