Flex FR-50 User Manual
Product Data Sheet
FLEX FR-10 AND FR-50
FIRE-RETARDANT SLIPSHEETS
PRODUCT DESCRIPTION
Flex FR-10 and FR-50 are roof system components manufactured of fire-retardant, coated-glass fiber
mats used to enhance the overall fire performance of a roof system. Flex FR-10 is coated on one side
while FR-50 is coated on both sides to improve fire performance in a single layer.
FEATURES AND BENEFITS
· Superior protection against flame spread and penetration.
· A lightweight and easy to install roof system component when compared to gypsum or composite
fire resistant board stock.
· Part of a “Class A” assembly over combustible and noncombustible decks and extruded polystyrene.
· Part of a “Class A” assembly over noncombustible decks and expanded polystyrene.
RECOMMENDED USES
Flex FR-10 and FR-50 are specifically formulated for use over wood decks or polystyrene insulation. The
proprietary flame-retardant coating and glass-fiber mat provide protection against flame spread and flame
penetration through the roof system. The slipsheet can also act as a barrier between chemically
incompatible insulation and roof membranes. In addition, the sheet may be used in multiple layers to
achieve greater fire resistance.
INSTALLATION
Flex FR-10 and FR-50 fire-retardant slipsheets are lightweight, easy to handle and, therefore, quicker to
install than gypsum or other thermal barrier boards. The slipsheet should be rolled out, overlapping the
preceding sheet a minimum of two (2) inches. Endlaps are also a two (2) inch minimum. Consult Flex
Technical Services for specific application recommendations (e.g., slipsheet roll direction perpendicular
to membrane roll). Mechanical attachment of the slipsheet is not needed in most applications. The
patented coating provides just enough weight to anchor the sheet until the membrane is installed. Token
mechanical or adhesive attachment may be necessary under windy conditions. Install only as much
slipsheet as can be covered by the end of the day.
STORAGE
Factory applied packaging is intended solely for protection during transit. When stored outdoors or on the
job site, the slipsheet rolls should be stacked on pallets at least four inches above ground level and
completely covered with a weatherproof covering such as a tarpaulin.
______________________________________________________________________________________________
Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533
Tel: (610) 916-9500 Fax: (610) 916-9501 www.FlexRoofingSystems.com
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TECHNICAL DATA
Standard Sizes
Slipsheet Material
Per Roll
Flex FR 10 1000 sq. ft. 958 sq. ft.
Flex FR 50 420 sq. ft. 402 sq. ft.
Coverage
w/2” Lap
Roll Size Roll Weight
48” x 250’
1219.2mm x 76.2m
48” x 105’
1219.2mm x 32.0m
80 lbs.
(36.0 kg)
79 lbs.
(36.0 kg)
Rolls
Per Pallet
20 20/22**
20 20/22**
Pallets
Per T/L
** use 22 pallets per T/L for 45’ trucks
Tensile Properties
Property Test Method Flex FR 10 Flex FR 50
Machine Direction ASTM D 828 60 lb./in. 75 lb./in.
Cross Machine
ASTM D 828 27 lb./in. 55 lb./in.
Direction
WARRANTY AND LIMITATION OF LIABILITY
Other than the aforementioned representations and descriptions, Flex Membrane International Corp. (hereafter, “Seller”) makes
no other representations or warranties as to the insulation sold herein. The Seller disclaims all other warranties, express or
implied, including the warranty of merchantability and the warranty of fitness for a particular purpose. Seller does however
have a limited warranty as to the LTTR-value of the insulation, the terms of which are available upon request from the Seller.
The Seller shall not be liable for any incidental or consequential damages including the cost of installation, removal, repair, or
replacement of this product. The Buyer’s remedies shall be limited exclusively to, at Seller’s option, the repayment of the
purchase price or resupply of product manufactured by Flex in a quantity equal to that of the nonconforming product. Flex
distributors, agents, salespersons or other independent representatives have no authority to waive or alter the above limitation
of liability and remedies
______________________________________________________________________________________________
Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533
Tel: (610) 916-9500 Fax: (610) 916-9501 www.FlexRoofingSystems.com
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