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Tile Subfloor Residential Wood Floor



SUPERSEAL Tile Subfloor can be applied to most any wood floor. The floor being wood can expand and contract at different rates than the tiles. This is where the Tile Subfloor membrane provides a separating layer, reducing or eliminating crack transfer during the expansion and contracting of the wood. By not using the tile subfloor, you will most likely have cracks transferring to the tiles, which are unsightly and costly to repair. By following the instructions, you can ensure that the Tile Subfloor will give you peace of mind. On Wood – modified thinset (ANSI 118.4 or ANSI 118.11).

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  • Seam Cloth 5″ x 16.6′ $19.99
  • Tile Subfloor 3’3″ x 32.8′ (108 sq. ft.) / 1m x 10m $71.28
  • Seam Cloth 5″ x 98.6′ $83.58
  • TEST USA Tile Subfloor 3’3″ x 98.5′ (323 sq. ft.) / 1m x 30m $245.48


Standard Shipping: 3 – 7 Business Days

All shipping times are estimated and may not be 100% accurate. Shipping times may vary based on location and order size. Most orders are shipped within the next business day.




SUPERSEAL Tile Subfloor was extensively tested by the Tile Council of North America, and received the highest rating possible: “Extra Heavy.” This means you can rest peacefully knowing that the best product on the market protects your residential or commercial application.


SUPERSEAL Tile Subfloor and the tiles can be installed in a continuous non-stop installation from beginning to end.


The unique characteristics of SUPERSEAL Tile Subfloor allows modified thinsets to be used with porcelain and ceramic tiles.


The membranes special fleece layers enhance the curing process. It increases tile adhesion by up to 5 times and the grouting can be done sooner. Even as early as the very next day.


The membrane’s unique surface also allows for pencil marks and chalk lines to stay permanent during the layout procedure. This is a huge advantage, especially when time is money.


Thousands of dimpled concrete pillars isolate the tiles from potential floor base cracks. The membrane’s unique hydrating process allows the thinset to maximize the bond within the tile floor assembly.


The preferred and most common installation of heat mats is directly on the substrate; however, you can also install heat mats on top of SUPERSEAL Tile Subfloor.

Tile Subfloor Installation Instructions

Apply Thinset

Press in tile subfloor

Install Tiles

Can I use SUPERSEAL Tile Subfloor over plank flooring or tongue and groove wood floors?

Yes, you can, providing you cover the surface with 3/8” plywood screwed and glued on 8” centres. Apply the SUPERSEAL as per instructions.

I need to install tile subfloor over an old floor that has floor joists of varying measurements on center. This being the space between the floor joists.

Please review these spacing requirements:

For use on floor Joists with the following spacing, natural stone and ceramic tiles require an additional plywood layer.
• 16″ OC with 5/8″ T&G
• 19.2″ OC with 3/4″ T&G
• 24″ OC with 3/4″ T&G and 3/8″ wood underlayment

On my wood subfloor what kind of thinset should I use?

It is recommended to use a modified thinset. A modified thinset has a latex polymer added, so that it provides better bonding and movement capabilities. It does not need be an expensive brand, just suitable to your application base on the information on the bag of thinset.

Can I use fast-set thinset with the tile subfloor?

Fast-set products are used primarily on small areas that can be managed in a manner of 10 minutes or less. It is important that your are fully prepared with the product pre-cut and the layout marked on the substrate prior to mixing the fast-set product.

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