This site uses cookies to store information on your computer. Learn more about these cookies, and how to opt out of them. Find out more

NBS Source

weberpral M

Saint-Gobain Weber Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

A weather-resistant, through-coloured monocouche render that is used for both new build or refurbishment projects.

Jump to:
+44 (0)1525 718877 Website


Suitable for use on:

  • New or existing sound brickwork, blockwork or concrete.
  • Masonry with a suitable strength and compatible with a 1:1:6 mortar mix.


Through-coloured monocouche render which can achieve a dry dash, scraped or roughcast finish – suitable for most types of brick or blockwork.

Features and benefits:

  • Single coat for fast application and shorter programme periods.
  • Formulated to be spray applied by render pump for faster application.
  • Coloured render for low maintenance with no further decoration required.
  • Can be used to create a scraped or roughcast render finish.
  • Weather and algae-resistant.
  • BBA approved certificate no. 17/5464.


Not suitable for use on construction board substrate (concrete particle board/render board), use weberend MT - Not suitable for use on insulation board substrate, use webertherm XP.

General information


Available in a range of 24 colours.




Dry dash

Wet dash


Quoins or Ashlar.




Ten year


Pr_35_31_64_12 Cementitious rendersPrimary


M20/160 Proprietary cement gauged render

M20/19 Proprietary cement gauged render

Product range

Renders And Decorative Finishes

Specification data - Cementitious renders

Product Reference

weberpral M


weber CL150 Fungicidal Masonry Wash.

For existing substrates, or where required on new substrates, drench apply CL150 wash and leave for 48 hours, then brush down to remove all moss/ growth.

weberend aid.

Helps to provide a mechanical key.

Apply with a hawk and trowel in a tight layer 2–3 mm thick to the substrate. Texture the surface using a well loaded roller. Apply no more than 2–3 m² before texturing. It is important that the final texture achieved should be deep, heavy stipple finish with a minimum textured depth of 5–10 mm. Insufficient key will inhibit the render bond; this is particularly relevant on low suction substrates where capillary absorption is minimal. Leave to cure for 48 hours.


  • Mix and apply to specified thickness - this will be 3 mm more than the finished thickness. Rule off with a straight edge to achieve satisfactory in-plane surface. Remove all trowel marks, and after partial take-up, scrape back 2–3 mm to develop the final colour and texture required.
  • The finished thicknesses as appropriate: 15 mm for sheltered areas; 20–25 mm for application in areas subject to severe or very severe weather conditions in accordance with BS EN 13914-1: 2016. Consult manufacturer for further details


Glass fibre reinforcement

weber standard meshcloth.

To be installed in accordance with manufacturer's recommendations. Balanced, open weave glass fibre meshcloth, coated for alkaline resistance. 1 x 50 m roll.

Weber recommend incorporating weber standard meshcloth into the weberend aid key coat or to the first pass of the weberpral first coat, to areas of typical stress points in the construction.

Surface treatment

Not required.

weberend protect.

  • weberend protect is a surface treatment for protecting render. Prevents ingress of most types of surface contamination, including water, oil and graffiti whilst maintaining the surface aesthetics and allowing the substrate to breathe.
  • Applied by using low pressure spray, brush or roller.

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. Structural, temporary or bead fixings shall be of suitable strength and durability. Some available accessories include:

  • Render only base (drip) beads.
  • Stop/ corner beads.

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.



21 kg/m² at 15mm application dependent.

Curing time

Curing with a fine spray of clean water may be necessary during rapid drying conditions, In hot climates curing as above is essential for 3 – 5 days after application.



Dry dash.

Spray roughcast



Show more

Fire performance:

A1 Non combustible.

(Based on less than 1% organic content).

Environmental information

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Digital objects

Platform Compatible Version Certified to




Download now from NBS National BIM Library


Weber Renders & Decorative Finishes

Weber Renders & Decorative Finishes

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

Certificate: 17/5464

BBA Agrément Certificate

BBA Agrément Certificate

Certificate: EP 17/1005

BBA Agrément Certificate

BBA Agrément Certificate

Certificate: EP 17/1005

BBA Agrément Certificate

BBA Agrément Certificate

Certificate: EP 17/1005