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Masonry Stone Wool Silicone Render A2 Rated External Wall Insulation System - External Wall Insulation System
Verified by manufacturer 7 days ago
External wall insulation system incorporating a range of components including A1 non-combustible stone wool insulation and a highly flexible and weather resistant silicone render finish.
Application
Suitable for a range of projects including retrofit, remediation, high-rise buildings, and new build.
Description
External wall insulation system for masonry substrates, incorporating an A1 non-combustible stone wool insulation board, this system achieves a system fire classification of A2-s1,d0 to BS EN 13501-1, allowing it to be used on a building of any height.
Engineered to excel in the UK climate, it has a silicone render finish coat, crafted for seamless integration with stone wool insulation, ensuring enhanced breathability and performance.
Features and benefits:
- Durable and long lasting.
- Flexible finish.
- Dry fix option available.
- Fire classification: A2-s1, d0 to EN 13501-1.
- Design life: 30 years, 60 year option available.
- Impact resistance: Category II.
- Hygrothermal/ freeze/ thaw testing: Pass.
- Stone wool thermal conductivity: 0.036 W/mK.
- Insulation thicknesses available: 30–250 mm.
- Finish options: silicone render available in a variety of finishes, each with a range of colours.
- Rapid rainproof status.
- High humidity resistance.
- Algae and mould prevention.
- KIWA BDA certified.
General information
Color | White Grey Blue Green Red |
Finish | Silicone Grained Textured Cement Trowelled |
Material | Silicone Mineral wool Stone wool Aluminium Render |
Shape | Other |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Ten year 25 year |
Uniclass | |
CAWS | M21/210 Rendered external wall insulation systems M21/20 External wall insulation systems |
Specification data - External wall insulation systems
Classification data | |
System performance | Durability - 30 years; fire performance to EN 13501-1, Class A2-s1, d0. Durability - 60 years; fire performance to EN 13501-1, Class A2-s1, d0. Guidance for specification option: The system’s service life can be extended to 60 years provided a planned inspection and maintenance programme is introduced. An extended 60 years service life also requires the use of certain components - consult manufacturer for details. |
Support rails and brackets | |
Fixing method | |
Material | Wetherby aluminium base rail. Guidance for specification option: 2.5 m long. |
Bracket fixings | Hit M 6 x 40 mm. Guidance for specification option: Zinc-coated expansion sleeve with a polyamide 6 body. 40 mm long by 6 mm diameter. |
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 30–250 mm (in 10 mm increments).
|
Adhesive | Wetherby insulation bedding adhesive (where required). Guidance for specification option: Wetherby Insulation Bedding Adhesive is a cement based, polymer modified adhesive that offers improved adhesion for bedding of EPS and Stone Wool External Wall Insulation Systems. Suitable for use on multiple masonry substrates. Contact manufacturer for more details regarding suitable primers and substrates. Consult manufacturer's literature for more details. |
Additional mechanical fixings | SPIT ISO 10. Guidance for specification option: Polypropylene plastic expansion sleeve with a polypropylene or polyamide 6 plastic pin. TFIX-8M. Guidance for specification option: Polypropylene sleeve with electro-galvanized steel pin. R-TFIX-8M. Guidance for specification option: Polypropylene sleeve with electro-galvanized steel pin. R-TFIX-8S. Guidance for specification option: Polypropylene sleeve with electro-galvanized steel pin. Ejot DMH 8. Guidance for specification option: Stainless steel anchor. Rawl MBA-SS. Guidance for specification option: Stainless steel facade fixing. 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. |
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 | SPIT ISO 10. Guidance for specification option: Polypropylene plastic expansion sleeve with a polypropylene or polyamide 6 plastic pin. TFIX-8M. Guidance for specification option: Polypropylene sleeve with electro-galvanized steel pin. R-TFIX-8M. Guidance for specification option: Polypropylene sleeve with electro-galvanized steel pin. R-TFIX-8S. Guidance for specification option: Polypropylene sleeve with electro-galvanized steel pin. Ejot DMH 8. Guidance for specification option: Stainless steel anchor. Rawl MBA-SS. Guidance for specification option: Stainless steel facade fixing. 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. |
Material | HECK SHP 4S silicone resin render. Guidance for specification option: Silicone-modified render comprising mineral fillers, conforming to BS EN 15824 with a 1.5–3 mm grain size. |
Decorative finish | Textured, 1.5 mm grain size. Textured, 2 mm grain size. Textured, 3 mm grain size. |
Colour | Manufacturer guidanceAvailable in a wide range of colours; including RAL and NCS. Consult manufacturer for more details and insert requirements. |
System accessories | Guidance for specification option: Consult manufacturer for details and insert requirements. |
Primer | HECK UG universal primer. Guidance for specification option: Polymer-modified primer comprising pigments and quartz grits. Manufacturer guidanceRender primer. |
Scrim adhesive | HECK K+A scrim adhesive. Guidance for specification option: Mineral-based, bonding and reinforcing basecoat. |
Impact resistance | Category II. |
Sustainability data
Contains Red List materials | No |
Country of material origin | Europe |
Country of product manufacture | Europe |
Manufacturing plant location | |
Material | Silicone Mineral wool Stone wool Aluminium Render Cementitious Fiber-glass Fibre-reinforced Mineral board Mineral fibre Resin Rock fibre Rock fibre mineral wool Rock mineral fibre Rock mineral wool Silicate Silicon Stainless steel Stonewool |
Expected Life | 30 year 60 year |
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