WEBERTEC RM1 | Cement-Based Polymer-Modified Fine Repair and Levelling Mortar

06/07/2026

WEBERTEC RM1 | Cement-Based Polymer-Modified Fine Repair and Levelling Mortar

WEBERTEC RM1

WEBERTEC RM1 is a cement-based, polymer-modified fine repair and levelling mortar developed to deliver high performance on concrete surfaces. Designed for excellent adhesion to fair-faced concrete, it can be safely used on interior and exterior walls and ceilings.

Classified as an R2 repair mortar, WEBERTEC RM1 is an ideal solution for surface preparation before granite and ceramic tile installation.


What is WEBERTEC RM1?

WEBERTEC RM1 is a:

  • Cement-based, polymer-modified repair mortar
  • High-adhesion solution for fair-faced concrete surfaces
  • Fine repair and surface levelling mortar
  • EN 1504-3 Class R2 repair mortar
  • Suitable for wall and ceiling applications

Its versatility makes it a reliable choice for both new construction and renovation projects.


Applications

According to the manufacturer's technical specifications, WEBERTEC RM1 is suitable for:

  • Concrete repair and surface levelling in interior and exterior applications
  • Wall and ceiling surfaces
  • Fair-faced concrete
  • Surface preparation before granite and ceramic tile installation

It is ideal for correcting surface imperfections and creating a smooth, even substrate before finishing applications.


Product Advantages

  • Excellent adhesion to concrete and cement-based plaster surfaces
  • Resistant to water, frost, and harsh weather conditions
  • Easy and smooth application over large surface areas
  • Non-sag performance on vertical surfaces
  • Preferred by professionals for high-quality surface preparation

Application Details

Application Tools: Hand mixer, steel trowel, finishing trowel, wire brush

Application Temperature: +5°C to +30°C

Pot Life: Approximately 60 minutes

Maximum Thickness per Coat: 5 mm

Total Application Thickness: 1–10 mm

Waiting Time Between Coats: Approximately 3 hours

Before application, the substrate should be clean, sound, and free of dust or loose particles.


Application Limitations

WEBERTEC RM1 should not be applied on:

  • Gypsum-based surfaces
  • Previously painted surfaces
  • Autoclaved aerated concrete (AAC) blocks
  • Natural stone and stone masonry
  • Hollow clay brick surfaces

Selecting the correct substrate is essential to achieve optimum product performance.


Packaging and Technical Documentation

Packaging: 25 kg bag

Available documentation includes:

  • Technical Information Sheet
  • Technical Data Sheet
  • Safety Data Sheet (SDS)
  • CE Certificate
  • TSE Certificate

Frequently Asked Questions (FAQ)

What classification does WEBERTEC RM1 have?

WEBERTEC RM1 is classified as an R2 repair and levelling mortar in accordance with EN 1504-3.

On which surfaces should WEBERTEC RM1 not be used?

It should not be applied to gypsum surfaces, painted substrates, autoclaved aerated concrete (AAC), natural stone walls, or hollow clay brick surfaces.

What is the maximum thickness per coat?

The recommended maximum application thickness is 5 mm per coat.

Can WEBERTEC RM1 be used before ceramic tile installation?

Yes. It is specifically recommended for surface preparation before installing granite and ceramic tiles.

Is it suitable for exterior applications?

Yes. WEBERTEC RM1 is suitable for both interior and exterior wall and ceiling applications.