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weberend MT 124P

Third party certifications:
  • BBA Agrément Certificate

    Certificate type

Saint-Gobain Weber

A high performance, multi-coat render system, incorporating glass-fibre meshcloth on a panel background and webersil TF top coat.

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Application

Suitable for use on new build or refurbishment projects on steel or timber framed substrates. Can be used on buildings above 18 m in England and Wales and 11 m in Scotland.

Description

A high performance, multi-coat render system, incorporating glass-fibre meshcloth on a calcium silicate panel background, and a webersil TF top coat.

Features and benefits:

  • Allows previously uneven masonry substrates to be rendered, and large areas can be rendered without the need for expressed joints.
  • Provides weather protection.
  • A wide range of finish coat colours are available.
  • BBA approved when used in conjunction with Siniat Bluclad or Knauf Aquapanel Exterior panels.
  • Suitable for use in areas where the local wind-driven rain spell index is less than 100 L/m² per spell calculated in accordance with BS 8104: 1992, and in situations where traditional renders are normally specified.

Applications:

Suitable for use on new build or refurbishment projects on steel or timber framed substrates. Can be used on buildings above 18 m in England and Wales and 11 m in Scotland.

System components:

  • Weber fixings as specified.
  • Substrate board.
  • weberend LAC (first layer, 3 mm).
  • weber standard meshcloth.
  • weberend LAC (second layer, 3 mm).
  • weber PR310 primer.
  • webersil TF textured finish.

The installation must be capable of resisting all dead loads and design live loads, including impact and wind loads, and accommodate all thermal movements without damage.

System installation is to be strictly in accordance with Saint-Gobain Weber specification. Please note that any other manufacturer's products used within the system will invalidate the guarantee, and the performance cannot be supported.

Remedial work must be completed prior to the installation of Weber render systems.

All rendering must be in accordance with the relevant recommendations of BS 13914-1: 2005, Design, Preparation and Application of External Rendering and Internal Plastering, BS 8000: Code of Practice for Plastering and Rendering. Consult manufacturer for further details.

Recommendations:

Timber or metal frame structure is required, including support rails suitable to receive render substrate boards in accordance with manufacturers recommendations, providing an in-plane and of adequate thickness for appropriate support and stiffness (limit mid span deflections L/200 and cantilever deflections to L/150. Board mid-span deflections should be limited to L/500) to receive weberend MT reinforced render system within the stated deflection limits or edge protrusions.

Prior to installation of the weberend MT system, ensure the manufacturer of the proposed approved substrate boards are contacted to obtain their fixing recommendations and ensure the boards suitability in withstanding the necessary wind load requirements for the specific project.

Cembrit PB substrate boards must not be used when the building height exceeds three storeys/ 7.2 m.

General information
Specification data - Silicone renders
Product Reference

weberend MT 124P

Building height

Insert requirements.

Substrate board

Knauf Aquapanel Exterior

BBA approved.

Siniat Bluclad

BBA approved.

Render -
First coat

weberend LAC

Standard. Uncoloured, polymer modified render, comprising FS2 sand, lime, cement, fillers and dry polymer.

weberend LAC rapid

To increase the speed of installation; consult manufacturer for details.

Glass fibre reinforcement

webermesh standard

Balanced, open weave glass fibre meshcloth, coated for alkaline resistance.

Finishing coat -
Primer

weber PR310

Low viscosity liquid (not required for weberend LAC rapid).

Type

webersil TF textured finish

Colour

Consult manufacturer's colour chart and insert requirements.

Cavity barriers

Type, thickness, density and compressive strength to be determined by the design team

Consult manufacturer for details.

Accessories/ Other requirements

Consult manufacturer and insert requirements.

Standard product features

Reaction to fire:

Euroclass A2, s1, d0 to BS EN 13501.

Coverage:

  • weberend LAC: 6.5 kg/m².
  • webermesh standard: 45 m² per roll.
  • weber PR310: 0.25 L/m².
  • webersil TF: 2.7 kg/m².

Product Options

Substrate board:

Knauf Aquapanel Exterior and Siniat Bluclad are recommended. More may be available, consult manufacturer for an up to date list of recommended boards tested for this system.

Render:

- First coat:

To be applied in two coats, incorporating meshcloth insulation board. Apply 2–3 mm thick, incorporating weber meshcloth. Allow for partial take-up then apply further 3 mm to form a nominal 6 mm thick monolithic coat. Further application instructions are available from the manufacturer.

- Finishing coat:

  • Can be applied with a thin plastic float.
  • Primer: Can be brush, spray, or roller applied.

Accessories/ Other requirements:

Render only beads, if required by the system or product, or if specified, shall be of appropriate design, gauge and material - consult manufacturer for details. Some available accessories include:

  • Beads/ stops.
  • Construction/ movement joints.
  • Compression joints.

Where window frames incorporating window cills are to be provided by others, then the cill must project sufficiently beyond the outside line of the Saint-Gobain Weber render system to a recommended 40 mm minimum - consult manufacturer for further details.

Literature
Third party certifications
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