User guide
Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533 Tel: 610-916-9500 Fax: 610-916-9501
COMMERCIAL
ROOFING SYSTEMS
FLEX FB (Fleece Backed) ELVALOY®, FLEX MF/R (Smooth Back) ELVALOY®,
FLEX FB PVC, AND FLEX MF/R PVC ADHERED, MECHANICALLY ATTACHED,
AND BALLASTED APPROVED COMPONENTS LISTING
The below listed materials are approved for use in conjunction with Flex FB Elvaloy®, Flex MF/R Elvaloy®
and Flex MF/R PVC Roofing Systems for compliance with the standard five (5) year guarantee and optional,
ten (10) year, fifteen (15) year, twenty (20) year and twenty-five (25) year guarantee programs.
1. Flex Roofing Membranes: All widths are approved.
Type & Thickness Color Usage Guarantee Length
Flex FB, FB Plus, White, Gray, Tan All 5, 10, 15, 20 & 25years
FB 120 Elvaloy®
.045”, .050”, .060”, .080”
Flex FB 100 Elvaloy® White, Gray, Tan All 5, 10, 15, 20 & 25years
.100 “ total thickness
Flex MF/R, MF/R Plus White, Gray, Tan All 5, 10, 15, 20 & 25years
MF/R 120 Elvaloy®
.045”, .050”, .060”, .080”
Flex MF/R PVC White, Gray, Tan All 5, 10, 15, 20 & 25years
.050”, .060”, .080”
Flex Flashing Membrane White, Gray, Tan Flashings only Concurrent with
Reinforced Field Membrane
.045”, .050”, .060”, .080”
Non reinforced .045”
Flex 6” Trim Strip White, Gray, Tan Trim Work Concurrent with
.045”, .060” Field Membrane
Flexclad Metal White, Gray, Tan Where Concurrent with
Required Field Membrane
2. Insulation:
A. Polyisocyanurate faced roof boards: Per Federal spec. HH-I-1972/GEN and HH-1-1972/2,
ASTM C 1289, Type II, Class 1, Grade 2 (20 psi) or Grade 3 (25 psi)
minimum thickness 1” nominal.
Flex ISO II, Flex ISO III, Flex ISO II Tapered, and Flex ISO III Tapered