About this product
weber.therm XB is a high performance external wall insulation system with an authentic brick finish.
Features and Benefits
- Provides efficient thermal insulation for refurbishment and new build projects
- Eliminates interstitial condensation by creating a 'warm wall' construction
- British Standard brick dimensions, designated frost resistant
- Hard durable surface reduces problems arising from impact damage and graffiti
- Provides designers with greater scope for creating and harmonising their ideas within architecturally sensitive projects
- Suitable for, and effective on most buildings - including lightweight steel frame structures and in-fill panels
- Supported by comprehensive technical and architectural services
Technical data
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.
Materials
Beads, trims and flashings
Full system beads are available in polyester powder coated galvanised mild steel or grade 304 austenitic stainless steel in 3 m and 2.5 m lengths.
Trims and flashings such as overcills and copings, are available in PPC aluminium in 2.5 m lengths or made to order.
Mechanical fixings
A wide range of fixings is available to accommodate all insulant thicknesses and substrate types. Fixings are specified on a project by project basis and pull-out values are established to ensure the weber.therm XB system is securely fixed back to the substrate.
weber.rend LAC
A factory batched mortar for bonding rigid insulation slabs to existing masonry substrates.
weber.rend EXB adhesive mortar
weber.rend EXB is a high polymer-modified, cement based adhesive mortar for bonding Mineral Fibre - lamella insulation to plywood substrates and also for bonding brick slips to rigid insulation slabs.
Brick slips
Brick slips are in accordance with BS3921 covering shape and size.
Nominal brick slip size 65 x 215 x 15 mm.
Brick slips are available in a wide range of colours and textures. See on the right hand side of this page.
weber.rend BPM pointing mortarweber.rend BPM is a factory batched coloured, polymer-modified, cement based mortar for pointing brick slips as used in the weber.therm XB EWI system.
Preparation
Existing rendered substrates
Hammer test and remove all areas of loose, 'bossed' render.
Treat surfaces with weber CL150, a biocidal wash, to remove any traces of organic growth.
Make good surface using weber.rend stipple and <>weber.rend TUC<//strong> or weber.rend PUC.
New build masonry or frame structure
Ensure all surfaces are clean, in-plane and of adequate thickness to provide appropriate support and stiffness without deflection or edge protrusions.
Application
Fix base and other full system beads as specified.
Fix the insulation as described in the System Specification Sheet or relevant project documentation.
Mix and apply weber.rend EXB as directed in the data sheet.
Fix brick slips. Where required, use expoclip to keep brick slip in position until mortar sets.
Point up the joints carefully with weber.rend BPM.
To ensure quality of installation, refer to the appropriate product data and relevant system specification sheets.
Good practice
Do not apply mineral renders:
- 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
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
Weber products are distributed throughout the UK through selected stockists and distributors. For UK sales enquiries and overseas projects, contact Weber's Sales office.
Sales office
Tel: (01525) 722100
Fax: (01525) 718988