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Masonry Stone Wool Mineral Render A1 Rated External Wall Insulation System - External Wall Insulation System
Verified by manufacturer 6 days ago
External wall insulation system incorporating a range of components including A1 non-combustible stone wool insulation and a weather resistant and robust mineral 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 A1 to BS EN 13501-1.
Engineered to excel in the UK climate, it has a mineral render finish coat. The thermal benefits come from Wetherby A1 Stone Wool Insulation coated in Wetherby K+A A1 Scrim Adhesive.
Features and benefits:
- Breathable.
- Reduced drying time.
- Fire classification: A1 to EN 13501-1.
- Design life: 30 years.
- 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 paint available in a variety of finishes, each with a range of colours.
- No height restrictions.
- KIWA BDA certified.
General information
Color | White Grey Blue Green Red |
Finish | Mineral Painted Silicone Textured |
Material | Mineral 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 A1. |
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 manufacture'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 | HECK AGG A1 reinforcement mesh. Guidance for specification option: Reinforcement fabric, A1 rated. |
Mesh size | 4 x 4 mm. Guidance for specification option: Supplied in 50 x 1.1 m rolls. Surface weight: 165 +/ - 5 g/m². Tear resistance: ≥1.8 kN/5 cm (in condition as supplied); ≥ 0.9 kN/5 cm (after artificial ageing according to ETAG). |
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 ED KC 1.5 mineral render. Guidance for specification option: Dry factory-mixed mortar for thin-layered, lightweight mineral finishing coats CS II, CR, W 2 in accordance with DIN EN 998-1 (P II in accordance with DIN V 18 550). |
Decorative finish | HECK SILCO FF silicone facade paint. Guidance for specification option: Silicone resin emulsion paint in accordance with VOB DIN 18 363 2.4.1. This is a high-quality, environmentally friendly, water-repellent and open-pore coating system. There is no film formation. |
Colour | Guidance for specification option:
Insert requirements. |
System accessories | Manufacturer guidanceConsult 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 A1 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 | Mineral Mineral wool Stone wool Aluminium Render Fiber-glass Fibre-reinforced Mineral board Mineral fibre Rock fibre Rock fibre mineral wool Rock mineral fibre Rock mineral wool Stonewool |
Expected Life | 30 year |
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