Single-Flex®
Premium Multi-Purpose Polymer-Modified Thin Set Mortar
Product overview
Single-Flex Premium Multi-Purpose Polymer-Modified Thin Set Mortar is ideal for both interior and exterior installations, making it suitable for setting various types of ceramic, porcelain, granite, slate, marble, limestone, and dimensional stone. This versatile mortar ensures reliable performance across different tile materials.
Geographic availability
- United States
Smart Advantages
For interior and exterior use on vertical and horizontal surfaces
Exceeds ANSI A118.4 and A118.11
Excellent working characteristics
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TDS
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SDS
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3-Part Specifications
Next events

CEU Webinar: Thin Gauged Porcelain Tile
Thursday, October 30, 2025 at 11:00 EDT
Online Webinar
The popularity of thin gauged porcelain tile has soared because of its large slab size, beauty, ...

2025 Starnet Fall Membership Meeting
October 24-26, 2025
Loews Ventana Canyon Resort
7000 N Resort Drive
Tucson, AZ 85750
7000 N Resort Drive
Tucson, AZ 85750
Join Bostik during the Preferred Vendor Trade Show at the 2023 Starnet Annual Meeting
Bostik Single-Flex®: Where to Use
- Interior/exterior floors
- Interior/exterior walls
- Interior/exterior countertops
Substrates
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Concrete
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Structurally-sound, exterior grade plywood (interior/dry use only)
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Cementitious backer board
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Existing, well-bonded vinyl/VCT or ceramic tile