Product Data Sheet
Show all documents
SikaTile®-904 Deck Mud

SikaTile®-904 Deck Mud

MORTAR  SETTING BED FOR HORIZONTAL SURFACES

SikaTile®-904 Deck Mud is a Portland Cement based tile mortar that is used as a mortar setting bed on horizontal surfaces. This product is pre-blended and packaged in 60 lb. bags for easy handling or produced in bulk. Available in Northern California only.

  • Easy to use
Product Data Sheet
Show all documents

Usage

For use as a bonded or non-bonded, conventional thick mortar bed on horizontal surfaces  

Advantages

  • Easy to use

Packaging

  • 60 lb (27.18 kg) bag
  • Bulk/Silo - call for details

Color

Manufactured in gray only

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Raw materials meet or exceed the following standards:

  • Portland Cement Type II/V ASTM C-150
  • Mortar Sand ASTM C-144
Product Information

Shelf Life

12 months from date of production if stored properly in original, unopened and undamaged sealed packaging

Storage Conditions

Store dry at 40–95 °F (4–35 °C)
Protect from moisture. If damp, discard material

Application

Application Information

Mixing Ratio

1/2 gal (1.9 L) of water per bag
Consumption

Coverage

Thickness

60 lb. bag

Bulk 1 ton

1" (25.4 mm)

7.2 ft2 (0.66 m2)

220 ft2 (20.4 m2)

1.5" (38.1 mm)

5.4 ft2 (0.50 m2)

165 ft2 (15.3 m2)

2" (50.8 mm)

3.6 ft2 (0.33 m2)

110 ft2 (10.2 m2)
Application steps

MIXING

This product only needs the addition of clean potable water to achieve the desired consistency.

Documents

FAQ

Are surface flatness requirements uniform regardless of tile size?

No, they are not. For standard-size tile < 15”, the substrate flatness tolerance is no more than ¼” variance in 10”. For tile > 15”, the substrate flatness tolerance is no more than 1/8” variance in 10’. This applies to any substrate whether it is a wall, floor, ceiling etc.

Can I use thinset to patch a surface?

No.  Thinset is an adhesive, not a patching or leveling compound. Thinsets are
designed to be a certain thickness and when that thickness is greater than what the thinset can handle, shrinking will occur. Use a product that is designed for patching or leveling.

How do I deal with old black adhesive on the floor?

Some old “cutback” black residues may contain asbestos. If the residue has asbestos, a professional will need to remove it. If the black residue does not contain asbestos, it may be removed by mechanical means such as sand blasting or grinding. Some products can encapsulate the black residue, preventing mechanical removal. Check Technical Services to find the correct products.

Which is better: level or flat?

In most cases, flat is better than level. For example, an exterior deck needs to be flat and not level. Building codes require the deck to be pitched away from the building, which would make the deck not level. But, to install tile the deck must be flat. So, it all depends on the application.