Masonry – EWI (Epsitherm) – EpsiCoat Stone Render

Insulation:

- WBS Premium Polystyrene SD/ FRA Grade (Premium EPS):

• Thickness: 10–300 mm+.

• K Value: 0.030–0.032 W/m²K.

• Thermal calculations are carried out for each project to help to determine the thickness of insulation required to meet current Building Regulation requirements.

- Fire performance:

• Expandable polystyrene is combustible when tested in accordance with BS476 Part 4 or EN ISO 1182. The actual fire rating is dependent on the type of decorative finish used.

• When used on multi-storey buildings, fire breaks must be incorporated into the system at every floor level above 1st floor and at each compartment wall abutment. Please refer to BR 135 ‘Fire Performance of External and Thermal Insulation for Walls of Multi Storey Buildings’; 2nd edition, 2002.

Fixings:

• Where mechanical fixings are required, the length, type and number of fixings required can only be determined following an on-site pull out test.

• Secondary pinning may be required on high-rise applications. Please consult with WBS Technical Support for recommendations.

Finishes:

- Polymer modified renders:

A range of BBA certified through coloured polymer modified renders are available in a variety of colours. Special colours may be available on request.

- Dry dash:

A wide range of coloured dashing mortars and complimentary dashing aggregates are also available. A list of standard colours can be found at: www.wbs-ltd.co.uk/wetherby-systems/system-finishes/polymer-modified-renders/dry-dash-finishes.

- Flexible Silicone & Acrylic Finishes:

• WBS flexible silicone & acrylic thincoat finishes are supplied pre-mixed and are available in 100 standard colours. Special colours and colour-matching to other manufacturer's palettes may be available on request. WBS silicone and acrylic finishes are available in four standard grain sizes in the 'K' range and two grain sizes in the 'R' range. Other grain sizes can be acquired on request.

• WBS Silicone & Acrylic systems are certified for European Technical Approval from the DIBT, Germany. ETA is an EEC wide accepted equivalent to BBA. Standard.

• Please consult with WBS technical department before specifying any dark colours with a lightness value of less than 20.

- Epsibrick Brick Slips:

The basis of the WBS Epsibrick Brick Slip System is the specially profiled galvanised steel/ stainless steel brick mesh which is fixed directly onto the EWI system. The mesh is fixed using specialist fasteners of the appropriate length to give a suitable penetration into all types of substrate, which must comply with wind loading requirements. Due to the overall weight of the system, it is recommended that WBS brick slips are only used up to three storeys.

- Epsibrick 7 mm Brick Slips:

WBS Epsibrick 7 mm Brick Slip System incorporating real clay brick slips adhesively fixed to a high impact, reinforced basecoat. The reduced brick slip thickness makes this an extremely durable, lightweight system, offering a wide range of colours, enabling tenants to retain the look of their original brick façade.

-Epsicoat Mineral Render Plus:

A unique through coloured mineral render requiring no painting or sealer coat. This system allows application in lower temperatures/ higher humidity and is rainproof within 2 hours. Available in 8 standard colours. Details of the Epsicoat Mineral Render Plus system can be found at: www.wbs-ltd.co.uk/wetherby-systems/system-finishes/mineral-renders/mineral-render-plus/

-Heck ED Mineral Render:

A high performance mineral render allowing quicker drying times in lower temperatures/ higher humidity. Heck ED Mineral Render requires 2 coats of silicone paint, tinted to the colour of the clients choice with 100's of options available through our NCS colour range. Details on the Heck ED Mineral Render system can be found at: www.wbs-ltd.co.uk/wetherby-systems/system-finishes/mineral-renders/epsicoat-heck-ed/