BBA Agrément Certificate
Certificate type
Mechanically fixed external wall insulation (EWI) system, using mineral fibre (MF) insulation and a specially designed mineral one-coat render with a roughcast finish.
Suitable for use in refurbishment and new build projects without height restrictions - can be used above 18 m in England and Wales, and above 11 m for Scotland to comply with appropriate Building Regulations. For installation onto new, sound brick/ blocks, or existing rendered/ un-rendered sound masonry.
Mechanically fixed external wall insulation (EWI) system, using mineral fibre (MF) insulation and a specially designed mineral one-coat render with a roughcast finish.
Features and benefits:
Applications:
Suitable for use in refurbishment and new build projects without height restrictions - can be used above 18 m in England and Wales, and above 11 m for Scotland to comply with appropriate Building Regulations. For installation onto new, sound brick/ blocks, or existing rendered/ un-rendered sound masonry.
System components:
The installation must be capable of resisting all dead loads and design live loads, including impact and wind loads, and accommodate all thermal movements without damage.
System installation is to be strictly in accordance with Saint-Gobain Weber specification. Please note that any other manufacturer's products used within the system will invalidate the guarantee, and the performance cannot be supported.
Remedial work must be completed prior to the installation of Weber EWI Systems.
Recommendations:
Uniclass 2015 | |
CAWS | M21/20 External wall insulation system M21/210 External wall insulation system |
Product Reference | webertherm XP163 |
Building height | Insert requirements. |
Preparation | Not requiredWeber CL150 Fungicidal Masonry WashConsult manufacturer for details. |
Insulation | - |
Type | webertherm MFD Mineral Fibre Dual DensityEuro Class A1. |
Thickness | Dependent on required thermal transmittance (U-value). Consult manufacturer and insert requirement. |
Fixings | To be confirmed on-site by pull out tests in accordance with BS EN 1991-1-4: 2005 |
Recycled content | Consult manufacturer for details and insert requirements. |
Glass fibre reinforcement | webermesh standardBalanced, open weave glass fibre meshcloth, coated for alkaline resistance. 1 x 50 m roll. |
Adhesive | Required to comply with SWIGA guarantee requirements on all buildings greater than four floors in height above ground level. Consult manufacturer and insert requirements. |
Cavity barriers | Type, thickness, density and compressive strength to be determined by the design teamConsult manufacturer for details. |
Sealant joints | Low modulus siliconeConsult manufacturer for details. |
Render | - |
Finishing coat | - |
Type | webertherm M1 – roughcast texture |
Colour | Consult manufacturer's colour chart and insert requirements. |
Thickness | 12 mm (minimum). Consult manufacturer and insert requirements. |
Accessories/ Other requirements | Not requiredFull system Weber base beadAluminium box profile with clip on nosing. Weber frame sealCan be used as an alternative at windows to provide a mastic free seal with improved aesthetics/ maintenance. Weber pre-coated, pressed aluminium under cill trims1.2 mm thick (nominal), size to suit EWI System, if required. Weber pre-coated, pressed aluminium verge trims1.2 mm thick (nominal), size to suit EWI System, if required. Weber PVC corner, stop, drip and movement beadsAs required. |
Standard product features | Fire classification (to BS EN 13501-1): A2-s1, d0. Impact resistance (to ETAG 004): Category i. Coverage:
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Product Options | Preparation: - 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. Insulation:
Render: - Finishing coat: Factory batched, through-coloured mineral render for a one coat application, incorporating webermesh glassfibre meshcloth. Suitable for scrape texture, dry dash or spray roughcast finishing, coloured and polymer modified, comprising limestone sands, lime, powdered polymer, pigment, cement and graded aggregates. |