Find a Rep
Your Rep

Articles & Resources

Technical Library

Total Value / Lifecycle Costing

Project Highlights

Building Industry Articles



Green-Lock® Plus Flashing Adhesive Roof Mastic

  • Solvent Free
  • Polyether Technology
  • Accelerated Curing

Green-Lock Plus Flashing Adhesive is a trowel grade, cold-applied, zero VOC, 100% polyether moisture-cured flashing adhesive. Green-lock Plus Flashing Adhesive is an ideal cold process adhesive for modified bitumen base sheets and modified bitumen cap sheets because it bonds tenaciously to SBS-modified bitumen membranes. It is used to apply flashings in conjunction with Garland's regular cold-applied or Garland's hot-applied SBS-modified roofing systems. The Green-Lock Plus Flashing Adhesive system consists of a multi-ply flashing application beginning with a base ply of Garland's two-ply base sheets followed by one of Garland's StressPly® family of smooth or mineral membranes as cap sheets. The result is a high-performance, solvent-free, multi-ply, modified cold-applied flashing system.

Speak with a Rep

Product Specifications


low VOC, hospital/schools/heavily populated areas

Solvent Free

Green-Lock Plus Flashing Adhesive uses polyether technology which contains no solvents. Being solvent-free means no adverse effects typically associated with solvent-based products, including odors, sheet softening, compound damage, solvent blisters, etc. Green-Lock Plus Flashing Adhesive also contains zero VOCs, making it an environmentally friendly option. 

Product Page Feature Graphic

Polyether Technology

Green-Lock Plus Flashing Adhesive is a moisture-cured polymer that reacts with the moisture in the air to become a strong, tough, and resilient rubber. It bonds the flashing system, securely holding it to the wall/flashing and underlying roof system. It also cures much quicker than standard solvent-based adhesives. 

Product Page Feature Photos

Accelerated Curing

Green-Lock Plus Flashing Adhesive will cure in one to five days, depending on climatic conditions, compared to 30 days or more for traditional solvent-based types of cement. Green-Lock Plus Flashing Adhesive becomes tack-free within an hour, so there is less chance of tracking the material, keeping the roof cleaner. 

How can we help?

Provide your email address to receive periodic updates from Garland, including commentary and technical analysis on the issues most important to commercial buildings. We'll also share project highlights of completed building envelope work, and you'll be the first to know about our next innovation.  

RMer Span Curve Panels are being installed onto the North County Regional Library