All First Quality & In-Stock — Shop Tile Online →

Visit a Florida Flooring Supercenter — Fort Myers · Sarasota · Tampa

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.


  • 423491  39757

    TEC 330 Feather Edge Skim Coat 10 lb

    T423491

    $2395
    Added to Cart
    View details
  • 423487  05509

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

    T423487

    $3699
    Added to Cart
    View details
  • 413055  98263

    Merkrete 820 Merlite Lightweight Wall Mortar, White, 30 lb

    T413055

    $2199
    Added to Cart
    View details
  • 413067  35501

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

    T413067

    $3899
    Added to Cart
    View details
  • 413063  34511

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

    T413063

    $2499
    Added to Cart
    View details
  • 426003  01699

    TEC 123 Double Duty Mastic, 3.5 Gallon

    T426003

    $5999
    Added to Cart
    View details
  • 426001  60403

    TEC 123 Double Duty Mastic, 1 Gallon

    T426001

    $3499
    Added to Cart
    View details
  • 402003  36934

    NAC Xtra Bond 9500 Urethane Sealant

    T402003

    $2039
    Added to Cart
    View details
  • 428007  75434

    TEC 560 Multipurpose Primer, 1 Gallon

    T428007

    $7999
    Added to Cart
    View details
  • 408121  51114

    Schluter KERDI-FIX Seal & Bond Compound 290ml White

    T408121

    $3304
    Added to Cart
    View details
  • 801039  17315

    TEC Flexera High Tack 4 Gallon Tile Adhesive

    T801039

    $13969
    Added to Cart
    View details
  • 801037  14637

    TEC Flexera High Tack 1 Gallon Tile Adhesive

    T801037

    $3385
    Added to Cart
    View details
  • T413310
    Sold out

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

    T413310

    $1599
    Added to Cart
    View details
  • T400900
    Sold out

    SikaTile-900 Rapid Set Thin-Set Mortar

    T400900

    $949
    Added to Cart
    View details

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.

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.

Compare /4

Loading...