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TEC PermaFlex 300 LHT Mortar – Large Format Tile & Stone Thin-Set, 50 lb.

Adhesives & Waterproofing

Everything that bonds and protects a tile installation: thinset mortars, mastic adhesives, waterproofing membranes, sealers, cleaners, and specialty glues — matched to your tile, substrate, and conditions from large-format porcelain to natural stone.
  • Tecpermaflex300lhtmortar TEC PermaFlex 300 LHT Mortar – Large Format Tile & Stone Thin-Set, 50 lb.

    TEC PermaFlex 300 LHT Mortar – Large Format Tile & Stone Thin-Set, 50 lb.

    T423045

    $1849
    Added to Cart
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  • 413400 33759

    SikaTile 400 LHT Pro Set Large & Heavy Tile Mortar, White, 50 lb

    T413400

    $1699
    Added to Cart
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  • 423035 20020

    TEC PermaFlex 300 Premium Flexible Tile Mortar, White, 50 lb

    T423035

    (2)
    $1649
    Added to Cart
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  • 413061 31317

    Quikrete Floor Mud Deck Mud Bed Mix, 60 lb

    T413061

    $1099
    Added to Cart
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  • T413305

    SikaTile-305 Pro Set Thin-Set Mortar, White, 50 lb

    T413305

    $1099
    Added to Cart
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  • T413500

    SikaTile-500 LHT Set Thin-Set Mortar, White, 30 lb

    T413500

    $2299
    Added to Cart
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  • 408039 79461

    Richpan 1040 PVC Shower Pan Liner Membrane, 6 ft Wide (Per Linear Foot)

    T408039

    $1209
    Added to Cart
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  • 423487 05509

    TEC Ultimate 6 Plus Lightweight LHT Mortar, White, 40 lb

    T423487

    $3699
    Added to Cart
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  • 426003 01699

    TEC 123 Double Duty Mastic, 3.5 Gallon

    T426003

    (1)
    $5999
    Added to Cart
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  • 408097 01716

    NAC TAC Interior/Exterior Primer, 1 Gallon

    T408097

    (1)
    $6799
    Added to Cart
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  • 426001 60403

    TEC 123 Double Duty Mastic, 1 Gallon

    T426001

    $3499
    Added to Cart
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  • 413067 35501

    Schluter ALL-SET Modified Thin-Set Mortar, White, 50 lb

    T413067

    $3899
    Added to Cart
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  • 428009 84899

    TEC Waterproofing Mesh 6"x50' 25 Sq Ft Roll

    T428009

    $1099
    Added to Cart
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  • T413310

    SikaTile-310 Premium Set Thin-Set Mortar, White, 50 lb

    T413310

    (3)
    $1599
    Added to Cart
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  • 408231 17067

    USG Liquid Waterproofing Membrane 1 Gallon

    T408231

    (1)
    $5499
    Added to Cart
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  • T413300

    SikaTile-300 Set Thin-Set Mortar, White, 50 lb

    T413300

    $1099
    Added to Cart
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  • 402001 10753

    GoBoard Pro Sealant 10.3 oz

    T402001

    $2249
    Added to Cart
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  • 413325 55777

    SikaLevel-325 Self-Leveling Underlayment - 55 lb

    T413325

    $3499
    Added to Cart
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  • 423396 13176

    TEC 396 Quik Flex White Tile Mortar 25 lb

    T423396

    $2699
    Added to Cart
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  • 428007 75434

    TEC 560 Multipurpose Primer, 1 Gallon

    T428007

    $7999
    Added to Cart
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  • 413045 79270

    Merkrete 735 PremiumFlex Best-Grade Tile Mortar, White, 50 lb

    T413045

    $2199
    Added to Cart
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  • 408115 11669

    KERDI-BAND 5" Waterproofing Strip 16'5"

    T408115

    $2556
    Added to Cart
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  • 428001 57510

    TEC 316 HydraFlex Waterproofing Membrane 1 Gallon

    T428001

    $8399
    Added to Cart
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  • 407117 02420

    Cement Grout Haze Remover Quart

    T407117

    $1695
    Added to Cart
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  • 407057 66833

    Sealer's Choice Gold Penetrating Sealer - 1 Pint

    T407057

    $4945
    Added to Cart
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  • 407053 90169

    Penetrating Sealer, 1 Quart

    T407053

    $1945
    Added to Cart
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  • 428003 54163

    TEC 316 HydraFlex Waterproofing Membrane 3.5 Gallon

    T428003

    $18999
    Added to Cart
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  • 407059 44126

    Sealer's Choice Gold Penetrating Sealer - 1 Quart

    T407059

    $8295
    Added to Cart
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  • 423491 39757

    TEC 330 Feather Edge Skim Coat 10 lb

    T423491

    $2395
    Added to Cart
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  • 407079 35109

    Concentrated Stone & Tile Cleaner, Quart

    T407079

    $1395
    Added to Cart
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  • 413063 34511

    Merkrete 855 XXL Large Format Tile Mortar, White, 50 lb

    T413063

    $2499
    Added to Cart
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  • 408121 51114

    Schluter KERDI-FIX Seal & Bond Compound 290ml White

    T408121

    $3304
    Added to Cart
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  • 408233 50267

    USG Liquid Waterproofing Membrane 3.5 Gallon

    T408233

    $12999
    Added to Cart
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  • 407101 01848

    Solvent-Based Stone Enhancer, Pint

    T407101

    $5295
    Added to Cart
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  • 407065 63682

    Grout Sealer 24 oz Spray

    T407065

    $2595
    Added to Cart
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  • 407077 91203

    Grout Deep Clean 24 oz Spray Cleaner

    T407077

    $1845
    Added to Cart
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  • 407131 43077

    Grout Sealer Roller Bottle Applicator

    T407131

    $695
    Added to Cart
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  • 413037 65673

    Merkrete 700 PremSet White Thin-Set Mortar 50 lb

    T413037

    $1179
    Added to Cart
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  • 408133 79823

    Schluter KERDI Kereck-F Preformed Inside Corner 2 Pack

    T408133

    $1972
    Added to Cart
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  • 407121 41636

    Sulfamic Acid Crystals, 1 lb Jar

    T407121

    $1395
    Added to Cart
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  • 407055 89985

    Penetrating Sealer, 1 Gallon

    T407055

    $5495
    Added to Cart
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  • 407185 45485

    NanoScrub Cleaner, 1 Quart

    T407185

    $2645
    Added to Cart
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  • 407173 46042

    High-Gloss Sealer - 1 Quart

    T407173

    $2895
    Added to Cart
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  • 407083 37284

    Heavy Duty Tile & Grout Cleaner 1 Quart

    T407083

    $1695
    Added to Cart
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  • 407063 47539

    Grout Sealer 1 Pint

    T407063

    $1695
    Added to Cart
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  • 407123 39886

    Grout Haze Clean-Up Pint

    T407123

    $1395
    Added to Cart
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  • 407133 22219

    Enrich N Seal Color-Enhancing Sealer 1 Pint

    T407133

    $7895
    Added to Cart
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  • 801037 14637

    TEC Flexera High Tack 1 Gallon Tile Adhesive

    T801037

    $3385
    Added to Cart
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Shop Tile Adhesives, Mortars & Waterproofing

A tile job succeeds or fails on what's behind the tile. This collection covers that whole layer: modified and unmodified thinset mortars from TEC, Merkrete, SikaTile, and Schluter; ready-to-spread mastics; sheet and liquid waterproofing membranes; the sealers and cleaners that protect the finished surface; and the specialty adhesives that handle everything in between.

Build the Right Assembly

  • Thinset mortar — the professional bond for floors, walls, and wet areas, including LHT formulas for large-format tile.
  • Mastic — ready-to-use adhesive for backsplashes and dry walls.
  • Waterproofing — KERDI sheet systems and liquid membranes with banding, corners, and seals.
  • Sealers and cleaners — protect and maintain grout, stone, and tile.
  • Specialty glues — KERDI-FIX, board sealants, and urethane bonding.

Why Buy Setting Materials from Tile Outlets of America

Buy the mortar, membrane, and finish products as one matched system with the tile they support — at outlet prices from our Florida warehouses. With three Florida Flooring Supercenters in Fort Myers, Sarasota, and Tampa, you can see products in person and get advice from people who install tile every day.

Related Flooring Categories

Porcelain Tile — The Toughest Tile You Can Buy Flooring

Frequently Asked Questions

What do I actually need to install tile in a shower?
From the wall out: backer board or membrane-ready substrate, waterproofing (sheet or liquid) with banded seams, thinset mortar rated for wet areas, tile, grout, and color-matched caulk at the changes of plane. A sealer protects the finished grout and any stone.
Which thinset should I buy if I'm not sure?
A quality polymer-modified thinset covers most tile-over-most-substrate situations. Move to an LHT version for tile 15 inches and up, and to unmodified only where a membrane manufacturer requires it.
Do sealers and cleaners really matter?
Yes — sealing cement grout and natural stone is what keeps them from staining, and using pH-appropriate cleaners is what keeps sealers working. The maintenance products protect the labor you just paid for.

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