Specification

SIM-40
1 of 4
1. PRODUCT NAME
SIM-40
2. MANUFACTURER
PROFLEX® Products, Inc.
2826 Broadway Center Blvd
Brandon, Florida 33510
Telephone: [phone]
Toll Free: 877-577-6353
Fax: [phone]
Internet: www.proflex.us
3. PRODUCT DESCRIPTION
PROFLEX® MAXXIM SIM-40 is a 40 mil composite underlayment consisting of a rubberized membrane laminated to a high strength
reinforcing fabric on the face and a release sheet on the adhesive side.
Uses
PROFLEX® MAXXIM SIM-40 is specially designed to be used under approved thinsets, mortars, and adhesives for interior and
exterior applications of ceramic tile, stone, and brick, and for interior applications of wood flooring to eliminate the transmission of
cracks. Other applications also may be suitable. Contact Technical Support for further information. To eliminate cracks in finished
floor work, the product should be applied to the entire substrate prior to the installation of the finished flooring.
Advantages
● Easy and fast to install with standard tools
● Ready for tiling immediately after installation
● Crack and joint isolation up to ⅜”
● Moisture Vapor Protection up to 5#-1000sqft-24hr
CaCl test (see installation instructions
Suitable Substrates
● Concrete (Poured, Prestressed, Precast)
● Cured Mortar beds
● Patching and Self Leveling Compounds
● Lightweight Gypsum Concrete (Gyp-Crete®)
● Exterior-grade plywood
● Cement backer-board
● Other substrates, contact Technical Support
Packaging  225 sq. ft/roll, 20 rolls per pallet
Shelf-Life
PROFLEX® MAXXIM SIM-40: Factory-sealed containers of this product are to be of first quality for one (1) year if stored at
temperatures between 40°F and 95°F
Companion Products
PROFLEX® Primer/s
RST - Rubber Seam Tape
PIB - Perimeter Isolation Barrier
Cautions and Limitations
● Substrate must be primed with PROFLEX® Primer.
● PROFLEX® shall be installed in compliance with the most current edition of the following publications: PROFLEX®
Installation Instructions, ANSI (American National Standards Institute) TCNA (Tile Council of North America) handbook for
ceramic tile Installation, MIA (Marble Institute of America) Dimension Stone Design Manual.
● PROFLEX® requires consultation with your selected manufacturer of Thinsets, Mortars, and adhesives to ensure selected
product is suitable for use with PROFLEX® elastomeric membranes. Mortars should be at a minimum ANSI 118.11
specification.
● Not for use over expansion joints (structural design joints) or structural (out-of-plane) movement cracks. Use of this
product does not eliminate the need for movement joints, including perimeter joints within the tiled surface. Perimeter
expansion of 1/4” minimum must be maintained for warranty. Movement joints shall be installed within the industry
standards in the publications listed in point 2 of the Cautions and Limitations section of this publication.
● Not recommended for use on concrete floors when hydrostatic pressure is present. PROFLEX® recommends testing the
substrate prior to installation of product using a Calcium-Chloride (CaCl) test kit, and /or concrete test for relative humidity
(Rh)
● Impervious tile (less than 0.5% absorption) may require a 48- hour cure prior to grouting. The mortar will be sandwiched
between two non absorptive materials and will require additional cure time.
● Cooler weather will also increase set time.
● Protect Primers from freezing.
Data Sheets are subject to change without notice. For latest revision, visit www.proflex.us 011217