weber.rendEXF 

weber.rend EXF is a non-structural, polymer-modified, low-density, cement-based mortar, specifically designed for dubbing out large voids or irregularities in masonry substrates, generally in a one coat application.

• Speed of application, 50 - 70 mm build-up, generally in one pass with no slumping
• Levels/removes surface irregularities as part of a weber multi-coat render or EWI system
• Exceptional and consistent quality
• Practical benefits of smooth application, speed, economy and shelf life
• Established track record in varying climatic conditions

weber.rend EXF is designed solely for dubbing out existing masonry with large voids or deep irregularities, prior to the application of weber.rend IF or a weber external wall insulation system. Whichever system is specified, all mechanical fixings must pass through the weber.rend EXF and locate into the existing masonry substrate.

All surfaces must be sound, clean, dry and free of any material which may impair adhesion.

Treat all areas of organic growth with weber CL150 as directed on the data sheet.

On areas of smooth concrete, it may be necessary to create a mechanical key by using weber.rend stipple - refer to data sheet.

Scaffolding must be independently tied to allow for an uninterrupted application. Any faults in the structure, particularly those which may lead to moisture penetration must be rectified.

Mix weber.rend EXF polymer modified mortar by adding clean water only to achieve a workable consistency.

This mortar can be made up in any batch size desired with little wastage because it is pre-mixed dry.

Add no other materials unless directed.

Apply to the substrate voids in one or two passes.

Allow to dry. This will depend on weather conditions, but normally requires a minimum of 36 hours.

Note: whichever specified system is to follow, mechanical fixings must always be long enough to pass through the weber.rend EXF into the existing substrate.

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

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

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.

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, 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