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Steel Frame Cavity Rail Stone Wool Clay Brick Slip A1 Rated External Wall Insulation System - External Wall Insulation System
Verified by manufacturer 10 hours ago
External wall insulation system incorporating a range of components including A1 non-combustible stone wool insulation and a clay brick slip finish.
Application
Suitable for a range of projects where substrates require a drainage cavity, including retrofit, remediation, high-rise buildings, and new build.
Description
External wall insulation system for steel frame substrates, incorporating an A1 non-combustible stone wool insulation board, this system achieves a system fire classification of A1 to BS EN 13501-1, allowing it to be used on a building of any height.
Providing a familiar brick finish with clay brick slips, it provides a cost-effective solution. The Wetherby RagRail helps to simplify the installation of this system and provide a partially ventilated cavity.
Features and benefits:
- Small drainage holes in the base track allow moisture to escape from the system.
- Durable and long lasting.
- Sustainable.
- Fire classification: A1 to EN 13501-1.
- Design life: 30 years.
- Impact resistance: Category I.
- Hygrothermal/ freeze/ thaw testing: Pass.
- Stone wool thermal conductivity: 0.036 W/mK.
- Insulation thicknesses available: 80–250 mm.
- Finish options: clay brick slips available in a variety of colours and thicknesses.
- KIWA BDA certified.
General information
Color | White Grey Red Yellow Orange |
Finish | Brick |
Material | Clay Mineral wool Stone wool Aluminium Steel |
Shape | Other |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Ten year 25 year |
Uniclass | |
CAWS | M21/20 External wall insulation systems M21/210 Rendered external wall insulation systems |
Specification data - External wall insulation systems
Classification data | |
System performance | Durability - 30 years; fire performance to EN 13501-1, Class A1. |
Support rails and brackets | |
Fixing method | |
Material | Wetherby aluminium base rail with treated timber battens. Guidance for specification option: 2.5 m long aluminium base rail for fixing to the sheathing board. Treated timber battens (minimum dry strength grade C16 in accordance with BS EN 14081-1:2016). Wetherby aluminium base rail with RagRail steel spacer rails. Guidance for specification option: 2.5 m long aluminium base rail for fixing to the sheathing board. Epsitec spacer rail, galvanized steel top-hat rail sections. |
Bracket fixings | Ejot LS range. Guidance for specification option: Case hardened, carbon steel, self-drilling screws. |
Boards | |
Material | To BS EN 12467, fibre cement board. To BS EN 12467, cement particle board (CPB). To BS EN 313-1, plywood. To BS EN 300, oriented strand board (OSB). |
Fixings | Ejot JT2-D6 range. Guidance for specification option: Case hardened steel fastener. Ejot JT3-D6-H range. Guidance for specification option: Stainless steel bi-met high thread fastener. Other. Guidance for specification option: Other fixings may be used provided they can be demonstrated to have equal or higher pull-out, plate diameter and plate stiffness characteristics. Consult manufacturer for details. |
Insulation | |
Material | Wetherby stone wool insulation. Guidance for specification option: Rockwool External Wall Dual Density Slab. Thermal performance ranging from 0.030 Wm²/K. Thicknesses between 80–250 mm (in 10 mm increments).
|
Additional mechanical fixings | Ejot TKR range. Guidance for specification option: Self-drilling. Case hardened countersunk carbon steel fastener. Ejot TKE range. Guidance for specification option: Stainless steel tapping screws with stainless steel washers. KC insulation washers. Guidance for specification option: Insulation washer with integral cap suitable for attachment of insulation layers to wooden and sheet metal substrates. Other. Guidance for specification option: Other fixings may be used provided they can be demonstrated to have equal or higher pull-out, plate diameter and plate stiffness characteristics. Consult manufacturer for details. |
Fire barriers and stops | |
Material | Tenmat FF 102/50 Intumescent Strip. Tenmat NVFB Non-Ventilated Fire Barrier. |
Beads and trims | Render beads. Manufacturer guidanceConsult manufacturer and insert requirements. |
Movement joints | |
Form with | Render beads. Guidance for specification option: Consult manufacturer and insert requirements. |
Sealant | Arbosil LMS. Guidance for specification option: Arbosil LMS is a one-part neutral cure silicon sealant which cures on exposure to moisture vapour to form an elastic silicone rubber. Available in a range of colours; consult manufacturer's literature for more details. Nullifire FS703. Guidance for specification option: FS703 is a low modulus, neutral cure, silicone sealant, suitable for linear gaps sealing in order to reinstate the fire performance in compartment walls and floors. Available in white as standard and black and grey upon request (may be subject to minimum order quantities). Consult manufacturer's literature for more details. |
Render carrier or reinforcement | |
Material | Alkali resistant reinforcing scrim cloth (R 131 A101). Guidance for specification option: Alkali-resistant glass fibre mesh. Nominal weight of 160 g/m². |
Mesh size | 3.5 x 3.8 mm. Guidance for specification option: Supplied in 50 x 1 m rolls and available in 1.1 and 0.5 mm thickness. Insert requirements. |
Fixings | Ejot TKR range. Guidance for specification option: Self-drilling. Case hardened countersunk carbon steel fastener. Ejot TKE range. Guidance for specification option: Stainless steel tapping screws with stainless steel washers. Other. Guidance for specification option: Other fixings may be used provided they can be demonstrated to have equal or higher pull-out, plate diameter and plate stiffness characteristics. Consult manufacturer for details. |
Render | |
Application | Finish coat. |
Decorative finish | Wetherby brick slip adhesive with Wetherby brick slips. Guidance for specification option:
|
Colour | Manufacturer guidanceAvailable in a wide range of colours; consult manufacturer for more details and insert requirements. |
System accessories | Manufacturer guidanceConsult manufacturer for details and insert requirements. |
Mortar | Wetherby pointing mortar. Guidance for specification option: Polymer modified sand/ cement based pointing mortar (class M5). Available in a range of colours, consult manufacturer and insert requirements. |
Scrim adhesive | Wetherby scrim adhesive. Guidance for specification option: Cement-based, polymer modified basecoat. |
Impact resistance | Category I. |
Sustainability data
Contains Red List materials | No |
Country of material origin | Europe |
Country of product manufacture | Europe |
Manufacturing plant location | |
Material | Clay Mineral wool Stone wool Aluminium Steel Fibre cement Plywood Oriented strand board (OSB) Fiber-glass Fibre-reinforced Mineral board Mineral fibre Rock fibre Rock fibre mineral wool Rock mineral fibre Rock mineral wool Stonewool Brick |
Expected Life | 30 year |
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