Brands and countries
  • Product

GLASS-MATE™

Glass Tile Mortar
Where to Buy
Product overview

Glass-Mate is a premium, polymer-modified thinset mortar known for its superior bond strength, durability, non-sag properties, and workability. Its bright white color and high polymer content make it perfect for setting individual glass tiles, sheet-mounted glass tiles, and most types of tile or natural stone in thinset applications over various substrates.

Geographic availability
  • United States
Available sizes
25 lb bag
9 lb bag

Smart Advantages

 
For installing mosaic and glass tile
Bright white enhances glass tile appearance
Mix with Bostik 425™ Multi-Purpose Acrylic Latex Admixture additive for submerged tile installations

Next events

bostik-academy-flooring-surface-prep-adhesives_640x480.jpg
Bostik Academy
Flooring Surface Prep & Adhesives
May 14-15, 2025
Bostik Academy - Temecula
27430 Bostik Ct.
Temecula, CA 92590

Presented by Bostik, discover our cutting-edge solutions in surface preparation, sealants, and ...

Glass-Mate: Where to Use

  • Residential and commercial interior/exterior floors and walls
  • Residential and commercial interior/exterior countertops

Substrates

When mixed with water:

  • Concrete (dry, cured at least 28 days)
  • Cement block, brick, cement mortar beds, self-leveling underlayments
  • Gypsum wallboard and plaster (interior walls in dry areas only)
  • Cementitious backer board (see manufacturer’s installation guidelines)
  • Bostik GoldPlus
  • Ultra-Set® Advanced
  • Bostik Black-Top

When mixed with Bostik 425 Multi-Purpose Acrylic Latex Admixture:

  • Concrete (dry, cured at least 28 days)
  • Cement block, brick, cement mortar beds, self-leveling underlayments
  • Gypsum wallboard and plaster (interior walls in dry areas only)
  • Cementitious backer board (see manufacturer’s installation guidelines)
  • Bostik GoldPlus
  • Ultra-Set® Advanced
  • Bostik Black-Top
  • Structurally-sound APA and CANPLY Group 1 exterior grade plywood (interior, residential and light commercial in dry areas only)
  • Existing, well-bonded, properly prepared ceramic or porcelain tile, cement terrazzo, quarry tile, pavers and natural stone (interior, dry conditions only)

Materials

  • Sheet mounted mosaics (glass, ceramic, porcelain, or stone) 
  • Individual glass tiles up to 6" x 6" (15 cm x 15 cm) or 36 square inches of:
    • Glass
    • Ceramic
    • Porcelain
    • Most natural stone
    • Pavers
    • Quarry
    • Saltillo 
    • Most marble
    • Most granite

Related market & applications

Related products

bostik-bam-large-heavy-tile-mortar-tise-image_372x240.jpg
bostik-bam-large-heavy-tile-mortar-tise-image_372x240.jpg

BAM™

  • Product
Fiber-Reinforced, RapidCure™, Large & Heavy Tile Mortar
big-tile-and-stone-polymer-modified-large-tile-mortar-image_372x2402.jpg
big-tile-and-stone-polymer-modified-large-tile-mortar-image_372x2402.jpg

Big Tile & Stone™

  • Product
Polymer-Modified Large & Heavy Tile Mortar
bostik-pm-polymer-modified-thin-set-mortar-image_372x240.jpg
bostik-pm-polymer-modified-thin-set-mortar-image_372x240.jpg

Bostik PM™

  • Product
Multi-Purpose Polymer-Modified Thin Set Mortar
bostik-ditra-set-thin-set-tile-mortar-image_372x240.jpg
bostik-ditra-set-thin-set-tile-mortar-image_372x240.jpg

Ditra-Set™

  • Product
Portland Cement Thin Set and Large and Heavy Tile Mortar for Schluter®-DITRA® AND Schluter®-KERDI® Uncoupling and Waterproofing ...
ezpoxy-ezclean-epoxy-mortar-and-grout-image_372x240.jpg
ezpoxy-ezclean-epoxy-mortar-and-grout-image_372x240.jpg

EzPoxy™ EzClean™

  • Product
100% Solids Epoxy Mortar & Grout
glass-mate_productsignpost_372x2402.jpg
glass-mate_productsignpost_372x2402.jpg

GLASS-MATE™

  • Product
Glass Tile Mortar
bostik-llf-large-format-floor-mortar-image_372x240.jpg
bostik-llf-large-format-floor-mortar-image_372x240.jpg

Large Format Floor™

  • Product
Polymer-Modified Mortar for Large Format Tile
bostik-mud-in-a-bag-floor-mud-image_372x240.jpg
bostik-mud-in-a-bag-floor-mud-image_372x240.jpg

Mud-In-A-Bag™

  • Product
Pre-Blended Floor Mud
professional-grade_productsignpost_372x240_0012.jpg
professional-grade_productsignpost_372x240_0012.jpg

PROFESSIONAL GRADE™

  • Product
Ceramic Tile Mastic
porcelain-mate_productsignpost_372x240_001.jpg
porcelain-mate_productsignpost_372x240_001.jpg

Porcelain-Mate™

  • Product
Polymer-Modified Portland Cement Thin Set Mortar
reflex-polymer-modified-thin-set-mortar-image_372x240.jpg
reflex-polymer-modified-thin-set-mortar-image_372x240.jpg

Reflex®

  • Product
Ultra-Premium Polymer-Modified Thin Set Mortar
single-flex_productsignpost_372x240_0012.jpg
single-flex_productsignpost_372x240_0012.jpg

Single-Flex®

  • Product
Premium Multi-Purpose Polymer-Modified Thin Set Mortar
bostik-single-flex-fs-fast-setting-polymer-modified-thin-set-mortar-image_372x240.jpg
bostik-single-flex-fs-fast-setting-polymer-modified-thin-set-mortar-image_372x240.jpg

Single-Flex® FS

  • Product
Fast Setting Premium Multi-Purpose Polymer-Modifed Thin Set Mortar
bostik-stonewall-non-sag-mortar-image_372x240.jpg
bostik-stonewall-non-sag-mortar-image_372x240.jpg

StoneWall™

  • Product
High Performance and Non-Sag Mortar
tile-mate-premium_productsignpost_372x240_001.jpg
tile-mate-premium_productsignpost_372x240_001.jpg

Tile-Mate® Premium

  • Product
Thin Set Mortar
Top