PermaRock Track-EPS (Rail) External Wall Insulation Systems

Preparation:

Consult manufacturer for details of preparation to suit project substrates. Use PermaRock Fungicidal Wash to treat walls affected by algae, mould etc.

Movement joints:

Live construction movement joints should be brought through the system. Refer to manufacturer's standard details.

Fire breaks:

Includes mineral fibre insulation surrounds to all structural openings and at all vertical edge and horizontal edge (top) terminations, in accordance with Building Regulations Approved Document B.

Cavity fire barriers:

The system incorporates intumescent cavity fire barriers for use in combination with horizontal fire breaks to prevent fire spread upwards when a drainage cavity is incorporated. Lamella Adhesive is used to adhesively bond fire barriers around structural openings and at vertical and horizontal (top) edge terminations.

Insulation:

• Expanded polystyrene.

• Standard dimensions: 500 x 500 mm (with rebated edges and slots cut into each edge).

- Type:

PermaRock Track-EPS Insulation:

• Lightweight, white insulation boards. They are Chlorofluorocarbon (CFC)/ hydrochlorofluorocarbon (HCFC) free, have zero Ozone Depletion Potential (zODP) and have been manufactured and supplied in accordance with BS EN 13163.

• Declared thermal conductivity (λ90/90) Lambda: 0.038 W/m·K.

- Thickness:

If required thickness is unknown, consult manufacturer for U-value calculations. Should be between 50–210 mm, in 10 mm increments.

- Mechanical fixings:

• The type, length and number of mechanical fixings (per board or per m²) required is dependent on the exposure (wind load) conditions. In-situ pull-out tests are carried out to determine the pull-out resistance of fixings on a project-by-project basis. Consult manufacturer for recommendations.

Reinforcement layer:

- Basecoat:

• PermaRock Bedding Mortar - is a high-performance, polymer-modified, cement-based reinforcement layer render supplied as a mineral dry powder pre-mix, requiring only the addition of water and mixing on site. Used in combination with PermaRock Reinforcing Mesh and/or PermaRock Armoured Mesh to create reinforcement layers over PermaRock Track-EPS Insulation.

- Mesh reinforcement:

• PermaRock Armoured Mesh: Heavy-duty alkali-resistant coated, multi-strand glass fibre reinforcing mesh for incorporation into a PermaRock basecoat (PermaRock Bedding Mortar) render to create a higher strength reinforced basecoat layer which confers a higher level of mechanical resistance to the system. Typically used in areas where a higher level of resistance to impact is desirable (e.g. cycle stores, bin stores, walls adjacent to public access areas, entranceways, etc.).

• PermaRock Reinforcing Mesh: Alkali-resistant coated, multi-strand glass fibre reinforcing mesh for incorporation into a PermaRock basecoat render (PermaRock Bedding Mortar) to create a reinforced basecoat layer which confers mechanical resistance and dimensional stability to the system.

- Secondary (system) fixings:

• PermaRock Reinforcement Layer Fixings (stainless steel): Provide additional structural stability against wind suction and in the event of a fire. The type, length and number of mechanical fixings required are dependent on the exposure (wind load) conditions. In-situ pull-out tests are carried out to determine the pull-out resistance of fixings on a project-by-project basis. Pull-through resistance is determined via laboratory testing.

Render/ Finish:

- Top (finish) coat:

Type:

PermaRock Acrylic K-Finish stippled render/ R-Finish corrugated render:

High performance, ready-to-use, through-colour, synthetic resin textured renders reinforced with siloxane to impart improved water repellence. Flexible, weather resistant, water repellent and water vapour permeable.

• Texture: Type ‘K’: Stippled; Type ‘R’: Corrugated.

• Resistance to soiling: Good.

• Colour fastness: Good; colour shade dependent.

• Colour range: Over 1250 standard colours (PermaRock Colour Chart; RAL, NCS, BS 4800, etc.). Colour matching available.

PermaRock Brick Slips:

Lightweight, flexible and breathable, synthetic resin brick tiles used to create a brickwork effect.

Facing brick slips and corner (pistol) brick slips provide a traditional or contemporary brick appearance to wall surfaces. Manufactured from high quality raw materials using modern machinery and the skills of experienced craftsmen, these simulated bricks offer a multitude of outstanding product characteristics.

The brick slips offer flexible application and design features, and are durable, robust, impact resistant and easy to clean. The brick slips are bonded to the primed reinforcement layer using a ready-mixed dispersion adhesive. Joints are subsequently pointed with a coloured, semi-dry synthetic pointing mortar.

• Size: Flat facing bricks: 215 x 65 x 4–6 mm-thick; Corner-facing bricks: 215 x 102 x 65 x 4-6 mm thick. Other sizes available, subject to minimum order quantities.

• Coverage: Flat facing bricks: Approximately 58 per m²; Corner (pistol) bricks: Approximately 13 per metre.

• Resistance to soiling: Very good.

• Colour fastness: Excellent.

• Colour range: 12 standard colours. Colour matching available, subject to minimum order quantities.

• Textures: Flat, textured or sand particle.

PermaRock Mineral K-Finish/ R-Finish Through-colour Textured Renders:

Lime-cement-based, non-combustible, lightweight, ecologically-compatible and cost effective renders providing an economical alternative to synthetic through-colour textured renders (due to low consumption rates and ease of application).

Hydraulically curing materials are based on a white cement and lime binder system with lightweight additives, minimal organic content, and additives to induce water repellency.

• Texture: Type ‘K’: Stippled; Type ‘R’: Corrugated.

• Resistance to soiling: Good.

• Colour fastness: Very good.

• Colour range: Over 900 standard colour shades (lightness factor (LF) ≥30); consult manufacturer's literature for details. For colours with LF 20–30, over-painting with a PermaRock equalising paint is advisable.

PermaRock Silicone ULTRA K-Finish/ R-Finish Through-colour Textured Renders:

Based on a hybrid binder system of organically crosslinked nano-quartz particles and silicone emulsion, offering a self-cleaning effect with enhanced resistance to dirt pick-up and mould/ algae growth, which provides cleaner surfaces for longer than conventional silicone, acrylic or mineral renders.

Lightweight, water repellent, excellent water vapour permeability and can resist aggressive air pollutants. Low environmental impact renders also contain a preservative against coating deterioration due to algae and fungus.

• Texture: Type ‘K’: Stippled; Type ‘R’: Corrugated.

• Resistance to soiling: Excellent.

• Colour range: Over 1000 options, including over 500 ‘A1’ colour shades: PermaRock Colour Chart, RAL (non-A1 shades) and BS 4800 (non-A1 shades). Colour matching service available.

• Colour fastness: ‘A1’ colours provide excellent resistance to colour fade and chalking. Colour fastness of non-A1 colours is dependent on the colour shade selected.

Beads/ Trims/ Profiles:

Full system (EWI) and render-only beads, including verge trims, top trims, starter tracks, full system stop beads, render stop beads, window sealing strips (reveals beads), movement joint beads/ profiles for vertical and horizontal joints. Sealing tapes and expansion joint tapes. All as system manufacturer’s or architect’s details, to be supplied by PermaRock.

Additional requirements:

• Specify movement joint trims, etc. or refer to detail drawings.

• Specify areas for additional reinforcement mesh e.g. at locations prone to greater risk or intensity of impact, etc.

• Provide details of brick coursing, bond and features to quoins, door/ window heads and raised feature bands or margins around doors/ windows etc., or refer to drawings.

• Provide details of colour changes, panelization/ faux joints, etc., or refer to detail drawings.