About this product
weber.rend MT is a high performance multi-coat render system, incorporating glass-fibre meshcloth, a resin-rich adhesive coat with a choice of textured finishes in a wide range of colours.
Features and Benefits
- Large areas can be rendered on calcium silicate panels without the need for expressed joints
- Allows previously uneven masonry substrates to be rendered
- Suitable for a range of finishes in a wide selection of colours
- Factory batched materials for consistency
- Supported by comprehensive technical and architectural services
- Established track record in varying climatic conditions
Constraints
The quality of application of these materials 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.
Preparation
Calcium silicate panels
Ensure panels are securely fixed to frame, providing a rigid in-plane surface without deflection or edge protrusions. Existing masonry substrates
Treat surfaces with weber CL150, a biocidal wash, to remove any traces of organic growth.
Where there is inadequate key, apply weber.rend stipple as directed on the data sheet.
Mix and apply weber.rend POC to produce a level, in-plane background. Lightly brush scratch and allow to dry. Refer to the Product Data Sheet for further information.
Application
Mix and apply the weber.rend LAC coat approximately 3 mm thick. Lay in the meshcloth and apply a further 2 - 3 mm of weber.rend LAC. Sponge finish to achieve a flat finish. Allow to dry.
Prime the surface with the appropriate primer. Allow to dry.
Apply the selected textured finish.
In order to achieve high-quality results, always refer to the individual Product Data Sheets before starting any works.
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
Products required
Beads, trims and flashings
Render only beads are available in coated galvanised, stainless, coated aluminium or rigid plastic in 3 m and 2.5 m lengths.
Trims and flashings such as oversills and copings, are available in PPC aluminium in 2.5 m lengths or made to order.
Levelling coat
(on masonry where required)
weber.rend POC is a polymer-modified, low density, cement based render, that can be applied up to 15 mm thick in one or two passes.
Adhesive coat
weber.rend LAC is a factory batched mortar for scrimming.
Primer
weber PR310 is a pigmented liquid paint and is an effective method of preparing substrates by reducing suction and providing a colour wash prior to the application of the chosen textured finish.
Synthetic textured coatings
A range of textured coatings is available in a wide range of NCS colours.
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.
Technical services
During the planning stages of a project, advice should be sought from weber technical staff.
Advice based on technical expertise together with unrivalled practical experience is freely available and covers:
Design: assistance with the selection of the appropriate system, including working details and U-value calculations.
Pre-Contract Documentation: specifications, typical details, method statements.
Contract Documentation: site packages, available through the specialist contractor. These include approved details, specification and site procedures. 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
