Membranes/Capsheets

KEE-Stone® NF 60 Flashing

UV Resistant & Energy Saving
Long-Lasting & Durable
Chemical Resistance

KEE-Stone NF 60 Flashing is a 60-mil thick, non-fleece back KEE (Ketone Ethylene Ester) thermoplastic flashing membrane with a lighter and more workable composition for easier installation and durability. Made with the same high-performance Dow ELVALOY™ HP compound as Garland’s KEE-Stone membrane, KEE-Stone NF 60 Flashing is designed as the top component in a two-ply flashing application. This membrane forms a complete flashing system with approved Garland-modified base sheets. KEE-Stone NF 60 is reinforced with a unique polymer-coated high-tensile strength polyester scrim. This distinctive composition provides exceptional puncture, tensile, and tear resistance while preserving the membrane's flexibility. KEE-Stone meets and exceeds ASTM D 6754, the standard specification for KEE-based sheet roofing.

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Product Specifications

Method	Description
Cold-Applied	KEE-Stone NF 60 can be installed over Garland-approved modified base sheets. Adhere one ply of approved Garland modified base sheet solidly to the approved substrate. Apply WB Flashing Adhesive to the exposed side of the already installed base flashing ply and to the backside of the KEE-Stone NF 60 Flashing membrane at a total combined rate of 1.0 -1.5 gallons per 100 sq.ft. (0.4-0.6 l/m2). a. If tying into a KEE-Stone roofing system, leave the bottom 3” free of adhesive to allow for heat-welding of cap flashing membrane to field membrane. b. If tying into a modified bitumen roofing system, apply adhesive to the entire backside of the cap flashing membrane. Once applied to both surfaces, allow a minimum 30 minutes (depending on environmental conditions) for the adhesive to become tacky. Using the finger push method, check that the adhesive develops strings, signifying that it has reached ideal tackiness. Once the adhesive is tacky enough, set the KEE-Stone NF 60 Flashing in place on the wall. Immediately roll the surface using a 2 in. wide weighted roller to ensure proper mating of the two surfaces. Once the KEE-Stone NF 60 is adhered, heat-weld seams to seal the membranes together.

Method

Description

Cold-Applied

KEE-Stone NF 60 can be installed over Garland-approved modified base sheets. Adhere one ply of approved Garland modified base sheet solidly to the approved substrate. Apply WB Flashing Adhesive to the exposed side of the already installed base flashing ply and to the backside of the KEE-Stone NF 60 Flashing membrane at a total combined rate of 1.0 -1.5 gallons per 100 sq.ft. (0.4-0.6 l/m2). a. If tying into a KEE-Stone roofing system, leave the bottom 3” free of adhesive to allow for heat-welding of cap flashing membrane to field membrane. b. If tying into a modified bitumen roofing system, apply adhesive to the entire backside of the cap flashing membrane. Once applied to both surfaces, allow a minimum 30 minutes (depending on environmental conditions) for the adhesive to become tacky. Using the finger push method, check that the adhesive develops strings, signifying that it has reached ideal tackiness. Once the adhesive is tacky enough, set the KEE-Stone NF 60 Flashing in place on the wall. Immediately roll the surface using a 2 in. wide weighted roller to ensure proper mating of the two surfaces. Once the KEE-Stone NF 60 is adhered, heat-weld seams to seal the membranes together.

Physical Property	Value
Elongation	MD 30% XD 35%
Low-Temp Flex	-40 ̊F (-40o C)

Eco-Fact	Value
Solar Reflectance	Initial: 0.87 Aged: 0.75
Solar Emittance	Initial: 0.88 Aged: 0.88
SRI	Initial: 110 Aged: 93

Type	Link
Data Sheets	KEE-Stone NF 60 Flashing Technical Data Sheet
Application Guidelines	KEE-Stone NF 60 Flashing Application Guidelines

Features

UV Resistant & Energy Saving

KEE-Stone’s white surface and advanced chemistry fight off the damaging effects of the sun to protect your building and your wallet. KEE-Stone’s bright finish reflects damaging UV rays away from the building. At the same time, the KEE formula locks the plasticizer within the membrane to prevent damaging migration that causes fewer materials to dry and crack under UV exposure.

Long-Lasting & Durable

KEE-Stone exceeds standard weathering tests, standing up against even the harshest weather and UV radiation. In accelerated weathering tests, KEE-Stone shows no sign of cracking or cratering even at 100X magnification, which is ten times more than the ASTM standard requires. KEE-Stone retains more than 90% of its breaking strength, elongation, and flexibility in heat aging tests.

Chemical Resistance

The strength of this formula provides extensive chemical resistance properties even in the presence of common rooftop culprits like animal fats, acids, oils, greases, etc. Exposure to harsh chemicals or greases cannot extract the plasticizer from the KEE-Stone membrane, so KEE-Stone NF 60 Flashing can maintain long-term chemical resistance. KEE-Stone NF 60 Flashing is reinforced with a unique polymer-coated high tensile strength polyester scrim. The result is a membrane with exceptional tensile strength and elongation performance that provides extraordinary durability and puncture resistance.

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KEE-Stone® NF 60 Flashing

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Features

UV Resistant & Energy Saving

Long-Lasting & Durable

Chemical Resistance

Related Products

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Green-Lock® Plus

KEE-Stone® FB 60 (2-Ply Hybrid Roof System)

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