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PermaRock Exterior Render System (Back-ventilated Render Rainscreen) (Non-Insulated) - Render System

Verified by manufacturer 2 months ago

PermaRock Products Ltd

External render system for application onto suitable mineral carrier boards in back-ventilated, pressure-equalised, rainscreen applications.

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Application

For application onto suitable mineral render carrier boards (walls and soffits).


Substrates can be of traditional masonry or concrete construction or suitable timber or metal frame construction.

Description

External render systems for back ventilated, pressure equalised, rainscreen (wall) applications.


The system includes a range of weather-resistant, water-repellent decorative through-colour render and brick tile finishes.


Features and benefits:

  • Lightweight, flexible, and crack-resistant.
  • Incorporates lightweight reinforcement for additional system durability.
  • Ease of application.
  • Includes a range of decorative finish options.


Please note that this is a non-insulated system; consult the manufacturer for further details.


Design considerations:

  • Render carrier boards will be mineral-based (e.g. cement-fibre, calcium silicate, or similar: gypsum-based and magnesium-based boards are not suitable), dimensionally stable with respect to changes in temperature and relative humidity/ moisture, and minimum 12mm thick. Boards should be fixed to substrates so that a through-ventilated air space, minimum 25mm wide, is created.
  • Where required, fire stopping should be provided within cavities at appropriate locations.
  • Water deflection channels should be incorporated into cavities above structural openings unless the cavity is drained/ vented at the opening.
  • Cavities should be provided with insect mesh to prevent infestation.
  • Render carrier board fixings should be non-corrodible, and countersunk flush with the face of the boards.
  • The system is provided with edge profiles to provide a neat edge to the render carrier boards.
  • Movement joints should be provided in the render carrier and render system where there are live movement joints in the substrate.
  • Wider cavities with increased through-ventilation may be required when the render is of a dark colour (high solar gain).

General information

Color

Beige

Black

Blue

Brown

Cream

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Manufacturer guidance

RAL colours.

Finish

Textured

Material

Acrylic

Silicone

Mineral

Render

Brick

Shape

Other

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

Ten year

Uniclass

Ss_25_45_70_55 Multicoat render systemsPrimary

CAWS

M20/160 Proprietary cement gauged render

M21/20 External wall insulation system . . . . . .

Product range

External Render Systems

Specification data - Multicoat render systems

First undercoat

PermaRock bedding mortar.

Guidance for specification option:

  • 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.

Second undercoat

PermaRock reinforcing mesh.

Guidance for specification option:

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.

Final coat

PermaRock acrylic K-Finish stippled render/ R-Finish corrugated render.

Guidance for specification option:

  • 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.

Guidance for specification option:

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.

Guidance for specification option:

  • 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.

Guidance for specification option:

  • 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

-

Manufacturer guidance

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.


Sealant movement joints

-

Sealant

Live construction movement joints.

Guidance for specification option:

should be brought through the system.

Refer to manufacturer's standard details.

PermaRock joint masking tape.

Guidance for specification option:

060/10: 50 mm wide joint tape with self-adhesive backing, for application across all render board joints to prevent render entry into the joint area.

System completion

-

Manufacturer guidance

  • 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.

Product Reference

PermaRock Exterior Render System (Back-ventilated Render Rainscreen) (Non-Insulated)

Substrate

Brickwork/ blockwork masonry.

Concrete.

Cross laminated timber (CLT).

Insulating concrete framework (ICF).

Light steel framing system (SFS).

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Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Material

Acrylic

Silicone

Mineral

Render

Brick

Recyclability

Not assessed

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

4.5 %

Literature

PermaRend High Performance Exterior Render Systems (high impact-resistant, lightweight, flexible, thin-coat, polymer-modified, crack resistant renders)

PermaRend High Performance Exterior Render Systems (high impact-resistant, lightweight, flexible, thin-coat, polymer-modified, crack resistant renders)

PermaRock Acrylic Through Coloured K Textured Render (high performance, flexible, weather resistant, water repellent and water vapour permeable renders)

PermaRock Acrylic Through Coloured K Textured Render (high performance, flexible, weather resistant, water repellent and water vapour permeable renders)

PermaRock Brick Slips (Lightweight, flexible and breathable synthetic resin brick)

PermaRock Brick Slips (Lightweight, flexible and breathable synthetic resin brick)

PermaRock SiliconeUltra Through Coloured K Textured Render (self-cleansing nano-quartz, colour-fast renders)

PermaRock SiliconeUltra Through Coloured K Textured Render (self-cleansing nano-quartz, colour-fast renders)

PermaRock Mineral K & R Renders (lime-cement-based, lightweight, non-combustible, cost effective renders)

PermaRock Mineral K & R Renders (lime-cement-based, lightweight, non-combustible, cost effective renders)

PermaRend (Render Only) Standard Detail Set - Masonry Walls

PermaRend (Render Only) Standard Detail Set - Masonry Walls

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