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webertherm OM

System benefits

  • Provides efficient thermal insulation
  • Decorative finishes in a comprehensive range of colors
  • Eliminates condensation in the structure
  • Suitable and effective on most building types
  • Supported by comprehensive technical and architectural services
  • Has a high performance weather resistant range of finishes to protect the building fabric

External Insulation System

webertherm OM is a render protected ETICS (External Thermal Insulation Composite Systems) comprising of EPS insulation boards, glued and mechanically fixed, reinforced with an imbeded mesh cloth, base coat, and finished with a textured colored render.

Product Features

Suitable Substrate

New sound brick / block or existing rendered / unrendered sound masonry / AAC blocks /plaster.


webertherm OM - External insulation systems

  • Insulation board:EPS (expanded polystyrene)
  • Fixing: Adhesive webertherm glue and mechanichal webertherm anc
  • Reinforcement: Fiber glass mesh webertherm mesh
  • 1 st base coat: webertherm base 3 - 5 mm
  • 2 nd base coat: webertherm base 3 - 5 mm
  • Finish: Primer and thin coat Acrylic or Silicate finish weberpas PR 300 weberpas deco 350 or weberpas PR SIL weberpas deco SIL


Technical Approval

European Technical Approval ETA-03/0058 acc. ETAG 004:2011


Send or download the documentation

You can either send the documentation to an email address, or download it.

Instructions for use

Surface preparation

If rendered, hammer test and remove all existing bossed render. For existing substrates, or where required on new substrates, clean and wash with clean water and leave for 48 hours. Brush down to remove all moss / growth. Make good boss areas by using appropriate concrete repair mortars or Premixed mortars and plasters Sodamco Weber range (refer to current product data sheets for further information). Fit full system base and stop beads, where required, with fixings as approved and supplied by Sodamco Weber.




Product application

Mix 25 kg of webertherm glue with approximately 5 liters potable water and apply to back of the insulant board as specified (approx 6 kg/m²). Position board on wall, tap lightly into position to reconcile edges, and mechanically fix to the masonry substrate using specified webertherm anc at the rate of 5 psc per board.

Mix 25 kg of webertherm base with approximate 5 liters portable water and apply 2-3 mm thick incorporating webertherm mesh 4x4 standard glass fiber. Lay-in and allow for partial take-up, apply further 3 mm to form a nominal 6 mm thick monolithic coat. Rule off with a straight edge to achieve satisfactory in-plane surface. Remove all trowel marks and dress off surface smooth with a sponge. Allow to dry.

Apply weberpas prime (acrylic or silicate) tinted primer by roller, spray or brush. Apply and work weberpas deco (acrylic or silicate) to an acceptable texture using a stainless steel / plastic trowel, all in accordance with manufacturer’s printed instructions.

Clean up

Clean the tools with water after use. Cured materials can only be removed mechanically.

Environmental and Safety

Safety precautions

The product contains cement powders which, when mixed with water, release alkalis that could be harmful to the skin. It is preferable that the application be done in a ventilated area, and to wear protective gear for hands, eyes and respiratory system and to avoid breathing of the dust. Splashes on the skin should be washed away by cleaning with soap and water. In case of contact with eyes, wash thoroughly with clean water. If swallowed, do not induce vomiting; in both cases seek medical attention. The product is non-flammable.


While the company guarantees its products against defective materials, the use and application of these products are made without guarantee since the conditions of their application are beyond its control. It is recommended to verify with the company that the product is suitable for the intended use, and that this Data Sheet version is the latest one. The company may modify it without prior notice. Technical characteristics are listed for guidance only. For more information, please contact the company’s office in your location.


The information included on this Technical Data Sheet is the sole property of SODAMCO Holding. The unauthorized disclosure, use, dissemination or copying (either whole or partial) of this data sheet or any information it contains, is prohibited and subject to legal pursuit.