The RainBuster LEAK-FREE Window Installation System is a comprehensive water intrusion prevention solution. Sophisticated in its building science yet simplified in its presentation and implementation, the LEAK-FREE system prevents leaks, costly call backs, and warranty claims. The system consists of RainBuster Sealant, RainBuster Flashing and RainBuster Installation Procedures.  The LEAK-FREE System comes with an industry leading thirty year parts & labor warranty.

  The LEAK-FREE system is designed to help architects, builders and installers efficiently make product and procedure selections that fit project specific or design pressure performance requirements. Each LEAK-FREE System procedure pairs RainBuster 450 sealant with one or more flashing product. The flashing products are RainBuster 405, 410, 415, 420, and 425.

The LEAK-FREE system includes an extensive catalog of installation procedures, each designed to perform to your specific performance requirements. Each full color procedure is easy to follow and repeat. Each meets and exceeds AAMA and ASTM standards and has been third party tested to perform in extreme weather conditions.

When you choose the LEAK-FREE Window Installation System, you are backed by the support of a team from Top industrial, Inc. that is dedicated to your business. Its window installation specialists are experts with decades of real-world experience, ready to assist the architect, builder, and installer in any way necessary. Its experienced team of regional Territory Managers will provide regular installation training, job site visits, and general support.

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Installation Procedure Catalog Menu (PDF)

View RainBuster Leak Free System Warranty (PDF)

The system consists of the following products:

RainBuster 405

RainBuster 405 Premium Nail on Flashing is an economical plastic-based flashing material that is ideal for flashing window & door perimeters.

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RainBuster 415

RainBuster 415 Self-Adhered Flashing Membrane is an ultra-high performance flashing material. It is constructed of a high quality rubberized asphalt adhesive and a durable cross-laminated permanent facer. RainBuster 415 is an outstanding choice for flashing window & door perimeters, recessed windows, sill pans, and pot shelves.

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RainBuster 420

RainBuster 420 Nail On Flashing Membrane is an ultra-high performance flashing material. Its unique patented construction allows for easy nail on installation and provides a rubberized asphalt core for self-sealing around penetrating fasteners. It is ideal for window & door installation.

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RainBuster 425

RainBuster 425 Flashing Corners are an effective solution for flashing challenging turns, corners, and transitions in construction. They are proven to prevent leaks in window & door sill pans, recessed windows, pot shelves, parapets, columns, and short/pony walls.

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RainBuster 440

RainBuster 440 SubZero Flashing Tape is an ultra high performance, self-adhered waterproofing membrane that offers industry best adhesion. Its ability to aggressively adhere down to -20F translates to superior adhesion across a wide range of challenging conditions and surfaces. It is constructed with a flexible and durable woven facer coated with an advanced polymer adhesive. It is a part of the RainBuster Leak Free Window Installation System.

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RainBuster 450

RainBuster 450 Window & Door Sealant is an ultra-high grade polyurethane designed to prevent water intrusion in the most demanding conditions. It is a part of the RainBuster LEAK-FREE Window Installation System and is compatible with RainBuster flashing.

RainBuster 450 uses closed system curing technology to earn LEED and Green Build Credits. Its environmentally friendly formulation is V.O.C. compliant under CARB and AQMD.

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