Products : JAMO : Surface Prep : Wall Mud Pre-mixed Lightweight Browncoat

Wall Mud Pre-mixed Lightweight Browncoat

WALL MUD is a pre-mixed lightweight, Portland cement and sand based browncoat designed as a plaster substrate for vertical interior tile applications. It is lighter in weight than conventional mud, imposing less dead load on structural members.

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WALL MUD is specifically designed as a plaster substrate for ceramic tile. It eliminates the use of metal lath.


TDS Documents

Technical Data Sheet


Suitable Substrates

WALL MUD can be used, with or without the use of metal lath, over the following: Portland cement, plaster, Haydite Block, hollow clay tile, brick and sheetrock.

General Surface Prep

Substrates must be dry and free of grease, oil, dirt, dust and other foreign matter. Cleaning may be accomplished via mechanical sanding, scraping or chipping. When applying over metal lath, make sure lath is properly secured to substrate.

Limitations to the Product

Metal lath must be used on the following: wood, Masonite® , metal and plastics. All substrates must be clean and free from foreign matter. WALL MUD should not be used on exterior applications without protection from rapid dry out. It is not designed for use directly over existing glazed ceramic tile surfaces.

Mixing Procedures

Mix in a clean mortar box using water at the rate of 2 to 2-1/2 gallons (7.6 L to 9.5 L) of water or latex admixture per 45 pound (20.4 kg) bag of WALL MUD. Smaller amounts may be mixed in a 5 gallon (18.9 L) pail using an electric drill at low RPM (150). Let material slake 15 minutes, remix and use.

Application of Product

When using on areas not requiring metal lath, attach your temporary screeds to the surface to be floated in. Screeds are normally spaced approximately 4 feet (1.2 M) apart. Apply WALL MUD to achieve the desired thickness of 3/8" to 5/8" (9.5 to 15.9 mm). The float should be cut vertically and horizontally about every 2 feet (0.61 M). The cuts should correspond to the tile joints. When using WALL MUD on a surface, which has metal lath, the scratch coat is eliminated as you can float the WALL MUD to your desired thickness, to a maximum of 5/8" (15.9 mm). You may proceed to set tile the same day. Precautions should be taken in cold weather. Protect from freezing during the first 72 hours.

Curing of Product

A minimum cure will be obtained in 12 – 24 hours, depending on ambient temperatures.

Cleaning of equipment

Water will remove uncured mortar

Warranty Information

Product Warranty

Seller warrants that should this product prove to be defective material, it will replace the same or refund the purchase price of the goods. THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTS EXPRESSED OR IMPLIED. WARRANTIES OF MERCHANTABILITY AND OF FITNESS ARE HEREBY DISCLAIMED. The suitability of a product for an intended use shall be solely up to the user. Seller assumes no liability for consequential damages. Its liability shall in no event exceed the purchase price of the materials supplied by it. No person has the authority to change these items and there are no warranties except as herein stated.

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