Accessories / Sealants

WaterStop Sealant

One-component butyl mastic used for sealing GenFlex membranes at compression-type terminations.

Acceptable Systems:

Overview

GenFlex Waterstop is a one-component, low-viscosity, self-wetting butyl blend mastic designed for use with GenFlex roofing systems. It serves as a reliable sealing agent between membranes, particularly in applications where the membrane is terminated using a compression-type seal. Highly tacky by design, Waterstop maintains its adhesion and flexibility over time, ensuring a durable, watertight seal at critical termination points.

Options

Size	Weight	Packaging	Product Description	UOM	Item Code
Size 11 fl oz (325.3 ml)	Weight 13 lbs (5.9 kg)	Packaging 12 tubes / ctn	Product Description	UOM CAR	Item Code W590010160

Documents

Document	Action
PDS 1320 GENFLEX WATERSTOP	Download View

No documents found.

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Sample Warranties

Title	Link
Commercial Building Membrane Limited Warranty (Tear-Off Warranty)_Distributors_2021	Download View
GenFlex Domestic Warranty Pricing Guide 2025	Download View
GenFlex Lifetime Residential Material Limited Warranty	Download View
GF-Limited Membrane Only-10-20-Yrs-SAMPLE	Download View
Paint Finish Warranty – 35 Yrs – SAMPLE 2008	Download View
Roofing System Limited Warranty – 5-20 years – 100 MPH – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 100 MPH – Hail – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 100 MPH – Hail – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 100 MPH – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 55 MPH – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 55 MPH – Hail – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 55 MPH – Hail – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 55 MPH – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 72 MPH – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 72 MPH – Hail – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 72 MPH – Hail – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 72 MPH – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 80 MPH – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 80 MPH – Hail – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 80 MPH – Hail – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 80 MPH – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 90 MPH – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 90 MPH – Hail – CP – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 90 MPH – Hail – SAMPLE 2003	Download View
Roofing System Limited Warranty – 5-20 years – 90 MPH – SAMPLE 2003	Download View

WaterStop Sealant

Overview

Options

Documents

Videos

Sample Warranties