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Weber Saint-Gobain - Official website of the company

weberend PUC

weberend PUC
weberend PUC

Product Benefits

  • Used as the first coat in render protected external wall insulation systems
  • An undercoat in multi-coat render systems

weberend PUC is a polymer-modified dry powder cement-based mortar.

Product Features

About this Product

A polymer-modified dry powder cement-based mortar for use as a render undercoat

  • As the first coat in render protected external wall insulation systems, such as webertherm XL
  • As an undercoat in multi-coat render systems

weberend PUC should be scratched horizontally to provide a key for subsequent coats.

When used in strict accordance with manufacturer's instructions and within an appropriate system, Weber renders will have a minimum life of 10 years.


Features and Benefits

  • Exceptional and consistent quality 
  • Bond strength improved 
  • Improved water resistance 
  • Practical benefits of smooth application, speed, economy and shelf-life 
  • Slower curing time in hot weather 
  • Technical support from a Quality Assured company 
  • Established track record in varying climatic conditions 
  • Conforms to BS EN 13914 
  • Forms part of an approved insulation system


The quality of application of this material depends on suitable operative skills and product familiarity.  Restrictions on weather conditions during application and curing must be respected.

Sound trade practices and printed instructions must be followed.

Good access and appropriate protection must be provided.

Technical Services

weber's Customer Services Department has a team of experienced advisors available to provide on-site advice both at the specification stage and during application. Detailed specifications can be provided for specific projects or more general works. Site visits and on-site demonstrations can be arranged on request.

Technical helpline
Tel: (01525) 722110
Fax: (01525) 718988

Sales Contact

Sales, England and Wales
Tel: (01525) 722100
Fax: (01525) 718988

Sales, Scotland
Tel: (0141) 445 0121
Fax: (0141) 445 0122

Sales, Ireland
Tel: (028) 9335 2999
Fax: (028) 9332 3232


Product Datasheet

Material Safety Datasheet

Declaration of Performance (DoP)

Send or download the documents

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

Preparation & Application


Apply to prepared surface 10 - 12 mm thick in accordance with BS EN 13914 and thoroughly scratch horizontally to produce key. 

Allow to dry and shrink completely before subsequent applications. This will depend on weather conditions, but normally requires a minimum of 36 hours.

 Good practice
 Do not apply:

  •  If frost is forecast within 24 hours of use 
  • In damp/wet conditions 
  • In temperatures below 5°C or above 30°C 
  • On elevations in direct sunlight or where the substrate is hot

Packaging, Health & Safety


weberend PUC is packaged in 3-ply 25 kg bags with batch code and description on the side.

Coverage / Yield

Storage and Shelf Life

When stored unopened in a dry place at temperatures above 5°C, shelf life is 12 months from date of manufacture.

Health and Safety

Contains cement (Contains chromium (VI). May produce an allergic reaction). Harmful by inhalation. Irritating to eyes and skin. Keep out of the reach of children. In case of contact with eyes, rinse immediately with plenty of water and seek medical help. After contact with skin, wash immediately with plenty of soap and water. Wear suitable protective clothing, gloves and eye/face protection.

For further information, please request the Material Safety Data Sheet for this product.