BBA Agrément Certificate
Certificate type
Render protected, mechanically fixed external wall insulation (EWI) system based on expanded polystyrene (EPS) insulant, a weberend PTC second coat and a webersil TF top coat.
Suitable for use in buildings with a floor not exceeding 18 m above ground level for England and Wales, with a reduced height of 11 m for Scotland.
Render protected, mechanically fixed external wall insulation (EWI) system based on expanded polystyrene (EPS) insulant with meshcloth reinforced basecoat, a top coat and a textured synthetic finish.
Features and benefits:
Applications:
Suitable for use in buildings with a floor not exceeding 18 m above ground level for England and Wales, with a reduced height of 11 m for Scotland.
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 EPS PM324For new, sound brick/ block or existing rendered/ un-rendered sound masonry substrates. webertherm EPS PM324PFor heavy duty fibre cement sheathing or suitable alternative recommended boards/ panels. |
Building height | Up to 18 m (maximum) for England and Wales. Up to 11 m (maximum) for Scotland. Insert requirement. |
Preparation | Not requiredWeber CL150 Fungicidal Masonry WashConsult manufacturer for details. |
Insulation | - |
Type | webertherm EPS Expanded PolystyreneEPS 70 E to BS EN 13163. |
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 |
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 | - |
First coat | weberend LACStandard. Uncoloured, polymer modified render, comprising FS2 sand, lime, cement, fillers and dry polymer. weberend LAC rapidTo increase the speed of installation; consult manufacturer for details. |
Second coat | weberend PTCPolymer-modified, through-coloured, cement-based mortar for use as a render top coat, comprising FS1 sand, lime, powdered waterproofer, pigment, cement and dry polymer. |
Finishing coat | - |
Primer | weber PR310Low viscosity liquid. |
Type | webersil TFStandard. 1.5 mm silicone based, factory batched textured finish. Water repellent, vapour permeable, weather resistant and UV stable. weberend mineral TFTo increase the speed of installation; consult manufacturer for details. |
Colour | Consult manufacturer's colour chart and insert requirements. |
Thickness | 13.5 mm (minimum). Consult manufacturer and insert requirements. |
Accessories/ Other requirements | See 'Options' and insert requirements. |
Standard product features | Fire performance (to BS 476: Part 6 and 7): Building Regulations National Class 0. Impact resistance (to ETAG 004): Category ii. 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: - First coat: To be applied in two coats, incorporating meshcloth insulation board. Apply 2–3 mm thick, incorporating weber meshcloth. Allow for partial take-up then apply further 3 mm to form a nominal 6 mm thick monolithic coat. - Second coat: For dry dashing or smooth floating to take synthetic finishes, coloured and polymer modified. - Final coat:
Accessories/ Other requirements: Full system and render only beads, if required by the system or product, or if specified, shall be of appropriate design, gauge and material (aluminium/ polyvinyl chloride (PVC)/ stainless steel) - consult manufacturer for details. Some available accessories are listed below:
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