QA Certificate
Certificate type
High-performance, lightweight external wall insulation (EWI) system based on low-lambda enhanced expanded polystyrene (EPS) insulating panels.
High-performance, lightweight external wall insulation external wall insulation (EWI) system based on low-lambda enhanced expanded polystyrene (EPS) insulating panels that incorporate microscopic particles of graphite for enhanced thermal performance and to dissipate heat. Suitable for buildings with a storey height up to 18 m.
The systems are suited for the upgrade of existing buildings and for new buildings, particularly where exemplar levels of thermal performance are required.
Features and benefits:
Design considerations:
Thermal calculations can be carried out for each project to help to determine the thickness of insulation required to achieve U-value requirements.
Uniclass 2015 | |
CAWS | M21/20 External wall insulation system M21/210 External wall insulation system |
Product Reference | PermaRock EPS-Premium External Wall Insulation Systems |
Building height | Up to 18 m (maximum). Insert requirement. |
Substrate | Cross laminated timber (CLT)Existing brickwork/ blockwork/ concreteNew brickwork/ blockwork/ concreteSFS (Steel frame with sheathing board)Structural insulated panels (SIPS)Timber frame with sheathing board |
Preparation | Not requiredPermaRock Fungicidal WashConsult manufacturer for details. |
Movement joints | Not requiredRequiredLocate as per project drawings. |
Fire breaks | Non-combustible (mineral fibre)Required horizontally at each floor level commencing at second floor level and at each floor level thereafter. |
Insulation | - |
Type | PermaRock EPS-Premium Insulation (EPS100) |
Thickness | See 'Options' below and insert requirements. |
Adhesive | PermaRock AdhesiveFor adhesive bonding of insulation boards to new or existing concrete, brickwork or blockwork substrates. PermaRock Lamella AdhesiveFor adhesive bonding of insulation boards to sheathing boards, CLT, or SIP substrates. |
Mechanical fixings | See 'Options' below and insert requirements. |
Reinforcement layer (render carrier) | - |
Basecoat | PermaRock Bedding MortarFor Silicone ULTRA K-Finish and R-Finish/ Acrylic K-Finish and R-Finish/ Mineral K-Finish and R-Finish/ stone chip render/ brick slips/ brick effect render/ dry dash. PermaRock Scratch Render BasecoatFor Scratch Render Finish/ Silicone Scratch Render FT. |
Basecoat (sponge float finish) | Not requiredPermaRock Bedding MortarFor Silicone ULTRA K-Finish and R-Finish/ Acrylic K-Finish and R-Finish/ Mineral K-Finish and R-Finish/ stone chip render/ brick slips. |
Mesh reinforcement | PermaRock Armoured MeshFor areas requiring higher level of impact resistance. PermaRock Reinforcing Mesh |
Mesh (corner) patches | PermaRock Reinforcing Mesh500 x 250 mm patches incorporated into PermaRock Bedding Mortar at corners of all structural openings and level changes (steps). |
Corner reinforcement | PermaRock Corner Beads |
Render/ Finish | - |
Primer | Not applicablePermaRock K&R PrimerFor Silicone ULTRA K-Finish and R-Finish/ Acrylic K-Finish and R-Finish/ Stone chip render/ Brick slips. |
Intermediate coat | Not applicablePermaRock Brick-effect Render Base Layer, colourFor PermaRock Brick-effect Render; insert colour requirement. PermaRock Dashing Mortar, colour |
Top (finish) coat | - |
Type | PermaRock Acrylic K-Finish stippled renderPermaRock Acrylic R-Finish corrugated renderPermaRock Brick-effect Render (BER) Face LayerPermaRock Brick Slip Adhesive/ Brick Slips/ Brick Slip Pointing MortarPermaRock Dry Dash Aggregate (Dashing Stones)PermaRock Mineral K-Finish stippled renderPermaRock Mineral R-Finish corrugated renderPermaRock Silicone Scratch RenderPermaRock Silicone Scratch Render FTPermaRock Silicone ULTRA K-Finish stippled renderPermaRock Silicone ULTRA R-Finish corrugated renderPermaRock Stone Chip Render |
Grain size | Not applicableAll types other than K or R finishes. K 1.5 mmFor Silicone ULTRA/ Acrylic K-Finishes only. K 2.0 mmFor Silicone ULTRA/ Acrylic/ Mineral K-Finishes only. K 3.0 mmFor Silicone ULTRA/ Acrylic/ Mineral K-Finishes only. K 5.0 mmFor Mineral K-Finishes only. R 2.0 mmFor Silicone ULTRA/ Acrylic R-Finishes only. R 3.0 mmFor Silicone ULTRA/ Acrylic/ Mineral R-Finishes only. R 5.0 mmFor Silicone ULTRA/ Acrylic/ Mineral R-Finishes only. |
Equalizing coating/ Paint | NonePermaRock Silicone ULTRA Facade CoatingSelf-cleaning facade paint with nano-quartz matrix structure. For use with K-Finish/ R-Finish renders with lightness factor < 20. |
Accessories | Extensive range available; consult manufacturer and insert requirements. |
Additional requirements | NoneAs drawingSee 'Options' below and insert requirements. |
Product Options | 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: Vertical mineral fibre fire breaks should be incorporated at compartment walls or otherwise as directed by the Building Control body in accordance with Building Regulations requirements. Consult manufacturer for further details. Insulation:
- Type: PermaRock EPS-Premium Insulation (EPS100):
- Thickness: If required thickness is unknown, consult manufacturer for U-value calculations. Should be between 20–300 mm, in 10 mm increments. - Adhesive:
- Mechanical fixings:
Reinforcement layer: - Basecoat:
- Mesh reinforcement:
- Secondary (system) fixings:
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.
PermaRock Brick-effect Render (BER) Face Layer: Pre-batched, two-coat/ two-layer, self-coloured polymer-modified, cement-based render designed to simulate the appearance of brickwork. Can also be used to create features such as soldier or sailor courses, brick quoins, arch keystones, springers, etc. and used in combination with other PermaRock decorative finishes. Incorporates a silicone water repellent, offering good water resistance which helps maintain a cleaner surface for longer. The render can be applied to achieve metric or imperial brick sizes, any bond pattern and also to create non-standard patterns and effects.
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.
PermaRock Dry Dash (Dashing Aggregate): Also known as dashing stones or pebble dashing. Traditional decorative rendering technique that provides a tough, durable, long lasting, cost-effective and almost maintenance-free finish to exterior wall surfaces. Based on Dashing Mortar (DM), a specially formulated, self-coloured, polymer enriched mineral-cement offering enhanced performance over traditional sand/ cement renders into which pre-washed and screened Dashing Aggregates/ Stones are cast during the application process.
Colour:
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.
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.
PermaRock Stone Chip Render: Ready-mixed, acrylate-based exposed aggregate finish with colour coordinated natural stone granules. Tough, durable exterior finish, particularly suited for application around entrance ways, plinths, etc. Environmentally friendly solvent-free, water-based formulation. Achieves a silk-matt, scrub resistant, cleanable, tough and hard wearing decorative finish that is resistant to aggressive air pollutants, moss, algae and fungal growths.
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:
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PermaRock New Buildings Brochure (external wall insulation, insulated cladding and render systems for new buildings)
PermaRock Existing Buildings (Retrofit) Brochure - external wall insulation (solid wall), insulated cladding and render systems for the retrofit / refurbishment of building
PermaRock EPS-Premium (Grey) EWI System Sheet (high-performance, light-weight enhanced EPS graphite systems)
PermaRock Acrylic Through Coloured K & R Textured Renders (high performance, flexible, weather resistant, water repellent and water vapour permeable renders)
PermaRock Brick Effect Render (two-coat self-coloured polymer-modified cement-based render used to replicate brickwork)
PermaRock Brick Slips (Lightweight, flexible and breathable synthetic resin brick)
PermaRock Dry Dashing Aggregate / Stone (tough, durable, long lasting, cost-effective and almost maintenance render finish)
PermaRock Silicone Ultra Through Coloured K & R Textured Renders (self-cleansing nano-quartz, colour-fast renders)
PermaRock Scratch Render (cement-lime render / monocouche / ashlar effect)
PermaRock SiliconeUltra Façade Coating (advanced self-cleansing façade paint with nano-quartz matrix technology and high resistance to UV)
PermaRock Stone Chip Render (hard wearing, low maintenance, acrylate based exposed aggregate finish with colour coordinated natural stone granules)
PermaRock Mineral K & R Renders (lime-cement-based, lightweight, non-combustible, cost effective renders)
PermaRock Standard External Wall Insulation Detail Set - Masonry Walls
PermaRock External Wall Insulation Systems onto Sheathed Frame Substrates - Standard Detail Set
PermaRock Exterior Render System (Back-ventilated Render Rainscreen) (Non-Insulated)
PermaRock High Rise Mineral Fibre External Wall Insulation Systems (HR)
PermaRock Mineral Fibre External Wall Insulation Systems (LR)
PermaRock Phenolic External Wall Insulation Systems
PermaRock Track-EPS (Rail) External Wall Insulation Systems