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RTS Under Tile System

PMMA/PUMA system providing moisture protection for applications under thinset tile

RTS Under Tile System is a non-reinforced waterproofing system designed for use on applications that are to receive tile. The high elongation properties do not require reinforcement typical of other similar systems.

System Overview

The Innovacoatings RTS Under Tile System uses PMMA/PUMA technology to provide a system which can return to service as soon as one hour after installation, and can be installed in temperatures down to 20°F/-7°C. The high elongation properties of the PMMA/PUMA materials do not require reinforcement typical of other similar systems.

The system features our RTS 200 Membrane and our 300 RTS Flexible Body Coat with 7992 sand aggregate. The system provides excellent waterproofing performance and provides the grip necessary for thin-set tile installation.

Use Area:

Under Tile

Type:

PMMA/PUMA

Features:

  • Excellent elongation
  • Rapid cure
  • Aggregate-loaded topcoat
  • Cold weather application

Benefits:

  • Provides crack bridging/waterproofing without need for reinforcement
  • Can be opened to service one hour after installation
  • Excellent adhesion of thin-set systems
  • Extends coating season

Selected Physical Properties

Product Description Test Method Results
200 RTS Membrane Elongation ASTM D638 282%
200 RTS Membrane Low-Temperature Crack Bridging ASTM C1305 Pass at 40/60/80 mils
300 RTS Flexible Body Coat MVT ASTM E96 143.0 mg m2 1 hour, 3.43 g m2 24 hours
300 RTS Flexible Body Coat Elongation ASTM D638 204%
300 RTS Flexible Body Coat Low-Temperature Crack Bridging ASTM C1305 Pass at 40/60/80 mils

RTS Under Tile System Build

Coat Product Coverage Rate Mils DFT
3 - Flexible Body 300 RTS +
7992 aggregate
80 sf/gal
To refusal
20
2 - Membrane 200 RTS 26 sf/gal 60
1 - Primer 100 RTS 90 sf/gal 17

Technical Documents

How long does the RTS Under Tile System need to cure before installing setting bed material?

Setting bed material can be applied one hour after the Flexible Body Coat (300 RTS) has been applied, even in cold temperatures.

What type concrete curing compounds can be used with RTS systems?

Water cure concrete or use a sodium silicate curing compound. Acrylic or other film forming compounds will create issues with bonding and must be removed.

What is the minimum temperature at which RTS systems can be applied?

RTS materials can be applied in temperatures as low as 20°F/-7°C. With special instructions it can be applied in colder temperatures.

Can RTS systems be applied during hot temperatures?

RTS materials can be applied hot weather; however, avoid applying in direct sunlight.

You can trust RTS Under Tile System in your next project

High-performance protection tested under the harshest environments. RTS Under Tile System is a rapid-curing PMMA/PUMA based system that provides waterproofing protection and the utmost in durability to withstand the harshest service.  

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