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CI / SfB January 2009

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Façade

Façade

Natura & Natura Pro, Textura, Pictura

CONTENTS

PRODUCT SELECTOR ....................................................................................... 3 FAÇADE PRODUCT RANGE ............................................................................. 4 FIXING SYSTEMS ............................................................................................. 5 DESIGN CONSIDERATIONS ............................................................................. 7 APPLICATIONS ................................................................................................. 8 Rainscreen Facades Balconies Soffits Exterior / Interior Overcladding Weatherboarding / Shiplap Infill Panels Partitions Public Buildings Outdoor Areas Ceilings FIXING SYSTEMS ............................................................................................ 10 Tegral Tergo System Tegral Rapid Sub frame Assembly Tegral Tegframe Light Gauge Steel Framing Screw Fixings to Timber Battens Tegral Naxo Decorative Fixings Weatherboarding Structural Bonding ­ Sikatack FIXING REQUIREMENTS ................................................................................. 12 Timber sub-structure Metal sub-structure NATURA & NATURA PRO ............................................................................... 13 Description & Properties Colour Range TEXTURA ......................................................................................................... 18 Description & Properties Colour Range PICTURA .......................................................................................................... 20 Description & Properties Colour Range CASE STUDY 1 ................................................................................................ 22 Natura Cladding in a Victorian landscape CASE STUDY 2 ................................................................................................ 24 Extension to the National Museum in Dublin

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PRODUCT SELECTOR World leaders in Fibrecement Façade Systems

Tegral Building Products, as part of the Worldwide Etex Group are at the forefront of modern design, development and manufacture of façade solutions using fibrecement façade sheets. Our products have been specified on prestigious projects throughout the World and are proven as providing both aesthetic appeal and durability.

Our portfolio includes the Natura, Natura Pro, Textura and the new Pictura façade product ranges, each providing specific benefits in terms of finishes and colours. Our products can be employed to great effect in a wide variety of applications including rainscreen facades, balcony screens, soffits, partition walls, ceiling and interior wall liners and infill panels.

In Ireland we have over 70 years experience working with fibrecement and today we can offer that expertise for the specification and supply of our high quality façade solutions.

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THE TEGRAL HIGH SPECIFICATION FAÇADE PRODUCT RANGE

NATURA

Description High quality boards with matt varnish on grey or anthracite through-coloured substrate bases, with UV-resistant and environmentally friendly colour pigments, several layers of pure acrylate coating and a hot film application. Benefits The subtle matt varnish of the Natura panels allows the natural texture of the fibrecement substrate to show through.

NATURA PRO

Description The new Natura Pro is an additional surface treatment applied to Natura boards offering a strong, smooth surface providing permanent protection against many forms of staining whilst also providing high levels of abrasion and chemical resistance. Benefits Provides the beauty of Natura with added protection. Currently available in a range of colours ­ consult Tegral sales at time of specification.

TEXTURA

Description High quality boards coated with fillite granules. UV resistant and environmentally friendly colour pigments make it possible to achieve a fascinating façade design with 15 bright colour coatings. Benefits The unique fillite granules of Textura break the surface tension of the rainwater allowing it to dissipate easily and assist in creating a surface with extremely low dirt adhesion in a variety of vibrant colour finishes.

PICTURA

Description Pictura is a unique façade panel with a smooth, semi-matt surface with a double acrylic coating and a polyurethane topcoating, UV hardened on the front face to create a strong impact and dirt resistant finish. Benefits This unique Pictura finish provides excellent scratch and chemical resistance and is therefore particularly suited to aggressive environments as well as allowing easier removal of staining including most forms of graffiti paint.

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FIXING SYSTEMS AND OPTIONS AVAILABLE

Tegral Façade products can be fixed to either treated timber battens or an aluminium subframe assembly:

TEGRAL TERGO SECRET FIX SYSTEM

Description Secret fix proprietary system for fixing to aluminium sub-frame ensuring clean pure lines with the benefit of concealed panel fixings.

TEGRAL RAPID SUB FRAME ASSEMBLY

Description A highly engineered system incorporating an aluminium subframe and fixings to allow easy in plane alignment. Uses Tegral 4 x 18k 15mm rivet with coloured head.

TEGRAL TEGFRAME LIGHT GAUGE STEEL FRAMING

Description Light gauge steel framing system providing easy-toapply sub frame assembly for external application or in-fill assemblies.

SCREW FIXINGS TO TIMBER BATTENS

Description Employs a timber support frame of vertical battens faced with Tegral EPDM strips and Tegral stainless steel Torx head screw fixing with coloured head.

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FIXING SYSTEMS AND OPTIONS AVAILABLE

STRUCTURAL BONDING ­ SIKATACK

Description Utilises structural adhesives to secret fix panels. (Consultation with Sika is recommended)

TEGRAL NAXO DECORATIVE FIXINGS

Description Combined system using fibrecement sheeting and stainless steel decorative fixings.

WEATHERBOARDING

Description The weatherboard or shiplap application provides depth and structure.

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DESIGN CONSIDERATIONS WITH TEGRAL FAÇADE SYSTEMS

COLOUR & FINISH ­ OUR PRODUCTS... YOUR PALETTE... At Tegral, we have recognised that the use of colour is critical in building design, enhancing or reducing the appearance of volume and scale, blending in with the surrounding environment or making a statement about the role or status of the building. Our products offer an extensive choice of colours and finishes providing you, the designer, with a high degree of visual subtlety and flexibility. · The Natura range currently offers 42 standard colours with a smooth clean surface finish revealing the natural fibre cement grain. · The Textura range, with a lightly textured finish currently provides a choice of 15 standard vibrant colours plus the option of special colours subject to technical feasibility. · The Pictura range has 15 standard colours with an easy-clean finish allowing the designer to introduce both colour and durability for more aggressive environments. FIXING FLEXIBILITY Tegral provide more fixing options than any other supplier in the Irish market and our sheets can be cut to any format. Consider the clean, crisp lines of Tegral Tergo secret fix system, the huge range of design options in the Tegral Naxo decorative fixing system, or the choice of screw or rivet fixings with coloured heads. Consider also the weatherboard or shiplap options and combine all of these alternatives with the different colour finishes available through Tegral and the range of choice becomes almost limitless. QUALITY & DURABILITY All of our products have been tested using accelerated age testing techniques and provide a life expectancy of over 60 years. They come with a 10 year colour stability guarantee, are frost resistant and impermeable and therefore provide excellent weather resistance. They are resistant to insects, mould damage, impact damage and are non-combustible (EN 13501-1) and UV stable. They are approved for use by the BBA under Agreement Certificate No6/4346. EASY TO FIX Because they are easy to fix they can help the rapid construction of the building envelope thus allowing the introduction of the follow-on trades thereby reducing overall project timeline and helping to guarantee achievement of target completion date.

ENVIRONMENT Environmental Product Declaration to ISO 14025 is available.

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APPLICATIONS

RAINSCREEN FACADE Rainscreen cladding is the attachment of an outer skin of cladding with a ventilated and drained cavity to a new or existing building. The system is a form of double wall construction that uses an outer layer to keep out the rain and an inner layer to provide thermal insulation, prevent excessive air leakage and carry wind loadings. The outer layer breaths like a skin while the inner layer reduces energy losses. The structural frame of the building is kept absolutely dry, as water never reaches it or the thermal insulation. Evaporation and drainage in the cavity removes water that penetrates between panel joints. Water droplets are not driven through the panel joints or openings because the rainscreen principle means that wind pressure acting on the outer face of the panel is equalised in the cavity. Therefore, there is no significant pressure differential to drive the rain through joints. During extreme weather, a minimal amount of water may penetrate the outer cladding. This, however, will run as droplets down the back of the cladding sheets and be dissipated through evaporation and drainage. ADVANTAGES By insulating the structural wall externally the following benefits are achieved: · Thermal bridging is eliminated because there are no interruptions caused by floor slabs. · Temperature fluctuations are minimised due to insulation on the outside. · Interstitial condensation is prevented as vapour pressure and wall temperature restricts condensation to the ventilated cavity. · Heat from the sun is dissipated so that the temperature is dispersed in the cavity and ventilated through openings.

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APPLICATIONS

BALCONIES Textura Balcony Panels have the finish on both sides to create a quality appearance on both the external façade and the internal environment. Textura Balcony Panels will provide a durable and long lasting finish. SOFFITS Tegral façade panels can be used on soffits to provide an attractive, clean and durable finish. The soffits can be specified in the same colour as the façade or in a subtle shade to create contrast and interest. EXTERIOR / INTERIOR OVERCLADDING If a rainscreen system is not required, Tegral façade panels can be used as exterior overcladding to cost effectively and rapidly renovate and modernise a building. The Tegral panels can be applied directly onto timber battens or an aluminium subframe. WEATHERBOARDING / SHIPLAP Weatherboarding can lend optical depth and structure to a façade. Panel dimensions may be uniform or varied and a range of effects can be created. The traditional shiplap effect can be created through the use of narrower horizontally laid panels whilst larger panels can be used to emphasise the abstract character of the building. Weatherboarding can be mounted on an aluminium or treated timber subconstruction using visible or concealed fixings. INFILL PANELS Infill panels can provide a rapidly constructed screen between glazing elements. In previous cases, designers have used different coloured panels to create vertical or horizontal colour bands. PARTITIONS Internal partitioning can be easily achieved using Tegral fibrecement panels. The high quality aesthetic provided by the panels can be enhanced through the use of stainless steel fixings (Tegral Naxo system). Different coloured panels can be used to provide emphasis or to visually separate different areas within a building or open space. PUBLIC BUILDING The durability of Tegral fibrecement panels make them particularly suitable for public buildings such as schools, hospitals and clinics where wear and tear is likely to be significant. In addition the panels are easy to maintain and clean to provide a hygienic surface and reduce overall maintenance costs over the lifetime of the building. OUTDOOR AREAS Tegral panels provide durable wall coverings and partitions that can be used in gardens, courtyards, outdoor areas and smoking areas to blend with the surroundings and to enhance the outdoor space. CEILINGS Ideal for aggressive spaces such as swimming pools, Tegral panels do not promote mould growth and can cope well with chemical and moisture impact.

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FIXING SYSTEMS

Tegral Façade products can be fixed using a wide range of fixing systems. Basic information on the two primary methods is set out on page 12. The interchangeability of panel and system means that the design permutations are wide and that careful choice of product and system will allow almost any specification to be met. In addition to the fixing systems detailed on this page, there are a number of special systems and applications for Tegral Cladding Panels such as infill panels, balconies, portable buildings etc. Further details can be obtained from Tegral's Technical Support Department.

TEGRAL TERGO SYSTEM Tegral Tergo is a façade system for secret fixing to an aluminium subframe assembly. The panels can be cut to size as required and the fixing system includes pre-drilled undercut fixing holes on the rear of the panels into which Tergo anchors are inserted to allow fixing to the aluminium frame. The benefits of the Tegral Tergo system include: · Proprietary system construction designed specifically for Tegral panels · Smart clean joints between panels · Robust secret fix system · Even transferral of load.

TEGRAL RAPID SUB FRAME ASSEMBLY A highly engineered system of top quality components specially developed for fixing to new or existing structures. The adjustment within the components allows a true plane to be easily achieved for the new cladding façade.

TEGFRAME LIGHT GAUGE STEEL FRAMING Tegframe is a light gauge steel framing system for rapid secondary frame construction. Used in infill construction, assembled panels can provide a rapidly constructed secondary structure which can be quickly weatherproofed to allow internal trades to begin sooner. Tegframe can also be applied to the outside of the main frame and fixed to it at each floor level. When applied in this way, the Tegframe optimises the useable space of the building. As with the in-fill application the Tegframe also allows the rapid achievement of a weathertight envelope which allows internal trades to commence work sooner, thus helping to reduce overall programme time.

SCREW FIXINGS TO TIMBER BATTENS Economical and durable, treated timber battens are widely used for all applications from fascias and soffits to total wall cladding.

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FIXING SYSTEMS

TEGRAL NAXO DECORATIVE FIXINGS Tegral Naxo combines the clean lines and smooth finish of Tegral fibrecement panels with the modern, engineered style of stainless steel fixings. The panels are fixed to a timber batten or an aluminium subframe by means of stainless steel screw or a stainless steel / aluminium rivet with a solid Naxo decorative element. The panels are bordered along the joints by sealing strips made of polished stainless steel. Some of the geometric forms of the Naxo elements are shown here but the range is unrestricted.

WEATHERBOARDING The weatherboard or shiplap application provides depth and structure.

STRUCTURAL BONDING - SIKATACK This structural bonding system utilises structural adhesives to fix internal and external cladding panels for a secret fix system.

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FIXING REQUIREMENTS

Timber sub-structure Metal sub-structure

15mm 11mm 35/45mm 18mm

Tegral stainless steel Torx head T20 screw fixing with coloured head. Pre-drill panel with Tegral 6mm diameter fibrecement drill bit. SCREW FIXING

5mm

Tegral 4x18-K 15mm rivet fixing with coloured head. Pre-drill panel with Tegral 9.5mm diameter fibrecement drill bit. RIVET FIXING

> 5mm

100mm > 15mm

4.1mm

Metal support rail

Drill metal support with a centralised 4.1mm dia hole

Batten Jointing strip

30mm min

Fibrecement panel Fibrecement panel

> 20mm 8/10

Rivet fixing (4mm dia body)

9.5mm

Tegral rivet ring/sleeve

Screw fixing

JOINT SCREW FIXING

50mm min.

PANEL FIXED POINT

4.1mm

Metal support rail

30mm min

Drill metal support with a centralised 4.1mm dia hole

Batten Jointing strip

Fibrecement panel Fibrecement panel

9.5mm

Screw fixing

INTERMEDIATE SCREW FIXING

Rivet fixing (4mm dia body)

PANEL GLIDING POINT

Batten 9.5mm dia hole Metal support rail

8/10 80 -160

6mm dia hole Jointing strip

8/10 80 -160

Fibrecement panel

4mm

Fibrecement panel

8/10

8/10

20 -160

20 -160

EDGE DISTANCES FOR SCREW FIXING

EDGE DISTANCES FOR RIVET FIXING

Full fixing method-statements are available from Tegral's Technical Support Department. These drawings have been sized for clarity and are not to scale. Please use dimensions only. All dimensions are in mm.

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NATURA

Natura is a high quality, fully compressed fibrecement cladding panel with semi transparent, matt varnish to reveal the natural fibrecement grain. MATERIAL Through coloured fibrecement (EN 12467). COATING Matt varnish on grey or anthracite throughcoloured boards, with UV resistant and environmentally friendly colour pigments, several layers of pure acrylate coating and a hot film application. SURFACE Smooth with the grain of the fibrecement showing through. COLOURS The current range consists of 42 standard colours. Panel orientation is not required. THICKNESSES 8mm and 12mm ADVANTAGES OF NATURA · Unique smooth finish with fibrecement grain revealed · Available in a range of 42 standard colours · Available in any factory approved RAL colour subject to minimum order · Available with range of fixing systems including secret fix for pure, clean lines · Particularly suited for attractive and durable rainscreen applications · Installed life expectancy of at least 60 years · Class 0 fire performance (spread of flame) · Fully compressed panel - Resistant to impact damage · Frost Proof · UV stable · Resistant to weather and atmospheric pollutants · Does not support mould growth or fungi · No routine maintenance necessary · 30 year structural guarantee and 10 year colour stability guarantee. · Suitable for wide range of applications

NATURA

Thickness mm mm Original factory size Not trimmed (mm) Maximum usable size* Trimmed on all sides (mm)

8 8

Weight

12 12

3130 x 1280 2530 x 1280 15.4kg/m2

3100 x 1250 2500 x 1250

8 12

22.8kg/m2

*Panels are normally supplied as trimmed. Untrimmed panels are available on request for self fabrication.

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NATURA PRO

The new Natura Pro is an additional surface treatment applied to Natura boards offering a strong, smooth surface providing permanent protection against many forms of staining whilst also providing high levels of abrasion and chemical resistance. Currently available in a range of colours ­ consult Tegral Sales at time of specification. MATERIAL Through-coloured fibrecement (EN 12467). SURFACE Smooth with the grain of the fibrecement showing through. COLOURS Consult Tegral Sales for more information. Panel orientation is advised. THICKNESSES 8mm and 12mm ADVANTAGES OF NATURA PRO Natura Pro incorporates all of the advantages of Natura plus · Scratch resistant laquer finish for extra protection

NATURA PRO

Thickness mm mm Original factory size Not trimmed (mm) Maximum usable size* Trimmed on all sides (mm)

8 8

Weight

12 12

3130 x 1280 2530 x 1280 15.4kg/m2

3100 x 1250 2500 x 1250

8 12

22.8kg/m2

*Panels are normally supplied as trimmed. Untrimmed panels are available on request for self fabrication.

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NATURA COLOUR RANGE

Tegral Natura grey N 271

Tegral Natura grey N 272

Tegral Natura grey N 273

Tegral Natura grey N 281

Tegral Natura grey N 282

Tegral Natura grey N 283

Tegral Natura blue N 471

Tegral Natura blue N 472

Tegral Natura blue N 473

Tegral Natura green N 581

Tegral Natura green N 582

Tegral Natura green N 583

Tegral Natura green N 571

Tegral Natura green N 572

Tegral Natura green N 573

Note Cut Edges: The colours above are on a dark base which results in a dark cut edge when in-situ. Although a very sophisticated printing process is used to ensure as close a match as possible, the final colour should be chosen from actual samples. 15

NATURA COLOUR RANGE

Tegral Natura yellow N 681

Tegral Natura yellow N 682

Tegral Natura yellow N 683

Tegral Natura yellow N 671

Tegral Natura yellow N 672

Tegral Natura yellow N 673

Tegral Natura red N 371

Tegral Natura red N 372

Tegral Natura red N 373

Tegral Natura brown N 971

Tegral Natura brown N 972

Tegral Natura brown N 973

Tegral Natura black N 071

Tegral Natura black N 072

Tegral Natura black N 073

Note Cut Edges: The colours above are on a dark base which results in a dark cut edge when in-situ. Although a very sophisticated printing process is used to ensure as close a match as possible, the final colour should be chosen from actual samples. 16

NATURA COLOUR RANGE

Tegral Natura grey N 291

Tegral Natura grey N 292

Tegral Natura white N 191

Tegral Natura beige N 892

Tegral Natura beige N 891

Tegral Natura green N 592

Tegral Natura green N 591

Tegral Natura blue N 491

Tegral Natura grey N 293

Tegral Natura anthracite N 251

Tegral Natura creme white N 154

Tegral Natura natural grey N 250

Natura rubin N 359

Note Cut Edges: The following colours are on a through-coloured base: N251, N154, N250, N359. The other colours above are on a light coloured base which results in a light coloured cut edge when in-situ. Although a very sophisticated printing process is used to ensure as close a match as possible, the final colour should be chosen from actual samples. 17

TEXTURA

High quality colour coated fibrecement sheet providing a vibrant colour range and lightly textured finish. A special coating provides unique vibrant colour range. Fillite granules in the coating break the surface tension of the rainwater allowing it to dissipate easily creating extremely low dirt adhesion. MATERIAL Through coloured fibrecement (EN 12467). COATING Colour coating with UV-resistant and environmentally friendly colour pigments, several layers of pure acrylate coating containing Filite granules, topcoat surface seal, hot film application. SURFACE Lightly textured COLOURS The current range consists of 15 standard colours with special order facility subject to technical feasibility. Do not mix 1500mm wide panels with 1250mm wide panels on the same elevation. THICKNESSES 8mm and 12mm ADVANTAGES OF TEXTURA · Lightly textured surface finish · Available in a range of 15 standard colours · Available in any factory approved RAL colour subject to minimum order · Available with range of fixing systems including secret fix for pure, clean lines · Particularly suited for attractive and durable rainscreen applications · Installed life expectancy of at least 60 years · Class 0 fire performance (spread of flame) · Fully compressed panel - Resistant to impact damage · Frost Proof · UV stable · Resistant to weather and atmospheric pollutants · Does not support mould growth or fungi · No routine maintenance necessary · 30 year structural guarantee and 10 year colour stability guarantee · Suitable for wide range of applications

TEXTURA

Thickness mm mm Original factory size Not trimmed (mm) Maximum usable size* Trimmed on all sides (mm)

8 8 8

Weight

12 12 12

3130 x 1530 3130 x 1280 2530 x 1280 15.4kg/m2

3100 x 1500 3100 X 1250 2500 x 1250

8 12

22.8kg/m2

*Panels are normally supplied as trimmed. Untrimmed panels are available on request for self fabrication.

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TEXTURA COLOUR RANGE

Tegral Textura red TA 305*

Tegral Textura red TA 304*

Tegral Textura orange TA 701*

Tegral Textura yellow TG 602**

Tegral Textura yellow TG 601**

Tegral Textura beige TG 803**

Tegral Textura blue TG 404**

Tegral Textura blue TG 403**

Tegral Textura green TG 504**

Tegral Textura grey TG 206**

Tegral Textura grey TG 205**

Tegral Textura white TG 102**

Tegral Textura blue TA 405*

* Base panel is through-coloured anthracite. ** Base panel is through-coloured natural grey.

Tegral Textura grey TA 207*

Tegral Textura black TA 001*

Although a very sophisticated printing process is used to ensure as close a match as possible, the final colour should be chosen from actual samples.

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PICTURA

A unique façade panel with an optically flat, semi-matt, mineral enamel surface. This hard UV-resistant, scratch resistant and chemical resistant finish is ideally suited for aggressive environments as well as allowing easier removal of staining including most forms of graffiti paint. MATERIAL Through-coloured fibrecement (EN 12467) COATING Double layer of acrylic coating with a PU top coating that has been UV hardened on the front face. SURFACE Optically flat, smooth semi-matt finish. COLOURS The current range consists of 15 standard colours with special order facility subject to technical feasibility. Panel orientation is advised. ADVANTAGES OF PICTURA · Hard mineral surface · Available in a range of 15 standard colours · Available in any factory approved RAL colour subject to minimum order · Available with range of fixing systems including secret fix for pure, clean lines · Particularly suited for attractive and durable rainscreen applications · Installed life expectancy of at least 60 years · Class 0 fire performance (spread of flame) · Fully compressed panel - Resistant to impact damage · Scratch and abrasion resistant · Stain and graffiti resistant · Acid resistant · Anti-bacterial · Frost Proof · UV stable · Resistant to weather and atmospheric pollutants · Does not support mould growth or fungi · No routine maintenance necessary · 30 year structural guarantee and 10 year colour stability guarantee. · Suitable for wide range of applications

PICTURA

Thickness mm mm Original factory size Not trimmed (mm) Maximum usable size* Trimmed on all sides (mm)

8 8

Weight

12 12

3130 x 1280 2530 x 1280 15.4kg/m2

3100 x 1250 2500 X 1250

8 12

22.8kg/m2

*Panels are normally supplied as trimmed. Untrimmed panels are available on request for self fabrication.

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PICTURA COLOUR RANGE

Tegral Pictura black PI 041

Tegral Pictura brown PI 941

Tegral Pictura brown PI 943

Tegral Pictura grey PI 241

Tegral Pictura grey PI 242

Tegral Pictura grey PI 243

Tegral Pictura green PI 541

Tegral Pictura green PI 542

Tegral Pictura green PI 543

Tegral Pictura beige PI 841

Tegral Pictura beige PI 842

Tegral Pictura white PI 141

Tegral Pictura blue PI 441

Tegral Pictura red PI 341

Tegral Pictura orange PI 741

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CASE STUDY 1

NATURA CLADDING IN A VICTORIAN LANDSCAPE Architects: ODOS, Dublin Location: Castlewood Avenue, Rathmines, Dublin 6 When the developer purchased two adjoining houses in Castlewood Avenue in Dublin 6, he was faced with huge challenges. One of the properties had been partially stripped out, both were in multiple units and were in terrible condition. The annexes of both had to be demolished and ODOS Architects were commissioned to design something to take their place. The creative solution was designed in three weeks and the developer was immediately struck by both the imagination and efficiency of the architects. In a period home, the central staircase was usually directed through the annexe, with bathrooms and small servant bedrooms on alternative turns. The annexes were therefore vital as the main traffic route through the house. The original annexe would also have had a role in providing light from the high and often decorative windows. Each of the matching ODOS designed annexes provides a striking feature that not only breaks with the tradition of the basic rectangular extension but creates new periscope-like addition to the parent building with a genuine independence of its own. They both appear to jut out at a steep incline from the rear walls with rooflines extended to mirror the original 1860s roof angles. The bases of the annexes are similarly angled giving the appearance of mid air suspension. The up-cuts rise in parallel to the roofline above from the base of the original house to first floor level and are `bridged' to the garden by a polished concrete platform that steps down to the lawn before winding around back into the kitchen. Although the twin annexes each contain only a bathroom, a study and storage cupboards, the windows are strategically placed to provide maximum light into the entire house. The angled base at ground level facilitates the large window into the kitchen ­ dining area and in the mid-level bathroom and top room study, huge picture windows create a similar lighting effect. In order to help their case with the planners, architects David O'Shea and Darrell O'Donoghue of ODOS, explained that their design proposals exploited what had already existed in terms of the original annexe footprints, the roof angles and the grey Natura cladding from Tegral that matched the existing grey roof slates. The Natura cladding comprises high quality boards with matt varnish on grey Through coloured substrate bases, with UV-resistant and environmentally friendly colour pigments, several layers of pure acrylate coating and a hot film application. The subtle matt varnish of the Natura panels allows the natural texture of the fibre-cement substrate to show through. The Natura was supplied by Tegral pre-sized and with chamfered cuts. As well as matching the traditional Victorian roofing materials, the Tegral Natura cladding accented by the smoked glass windows, provided a visual contrast to the period urban landscape of cement render and red and brown brick.

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CASE STUDY 2

EXTENSION TO THE NATIONAL MUSEUM IN DUBLIN Architects: Office of Public Works, Architectural Services 2, Dublin Location: National Museum of Ireland, Collin Barracks, Military History Wing and Exhibition, Benburb Street Dublin 7 Collins Barracks ­ that is not only the address of the Military History Section of the National Museum of Ireland, it is also an 18th century barracks compound with façades of sawn granite and an arcade of hewn granite blocks. This grim looking fortress was to be converted to provide exhibition space for heavy military weapons. However, given the size of these large objects, that would have meant an unjustifiable violation of an historic monument which the authorities for the protection of public buildings opposed. This article describes the end result in negotiating a controversial project, achieved with ingenuity and remarkable expertise in design and planning. Standing in the court yard you will notice a modern glass wall in the north-east corner which seems to suggest that a war damaged section has been discreetly closed. There is a similar addition to the north-west corner. Those are the only palpable indications that any changes have occurred to this complex, but changes that do not disturb the formal cohesion of this stern looking yard. And so your curiosity is awakened. Passing by the northern perimeter along Arbour Hill Street which lies five metres above the museum's ground level you will then notice that there are new structures at either end of the north wing: The cubes at the north-eastern corner offer 703 square metres of exhibition space and 249 square metres of ancillary premises respectively. This general introduction may serve to explain the restrictions that the architects were faced with and the manner in which they approached them. The new building they designed is a straightforward response to the complexity of the historic monument. The volumes are shaped of plain surfaces of either Natura fibrecement panels or glass. Where new and old meet they are either separated by glass joints of varying widths, or Natura fibrecement and stone adjoin directly. There are no structural details to be gleaned from the outward appearance, and neither are there ornamental details to be seen anywhere. This is modern minimalism in every aspect right down to the last fixing screw on the fibrecement panels. To find out what is binding shell, insulation, steel frame and ventilation grids together you have to look at sectional diagrams, and even there you will find nothing that is not simple, basic and durable. However, there are finer details yet to be discovered: the new structure dispenses with traditional features such as plinth and cornices; but the gaps between the fibrecement panels replicate in width those between the granite blocks of the old building. Those are no trivial details but, inter alia, indications that the new is paying homage to the old without, however, ingratiating itself.

Rooflights

Existing East Range Clarke Square

Arbour Hill

Balcony

Main Exhibition Hall

Balcony

Courtyard 01

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STORAGE All Tegral cladding materials must be stored flat on pallets, inside and under cover, in dry conditions, protected from the weather and other trades. If moisture is allowed to penetrate between the stored sheets, permanent surface staining may occur. HANDLING Always lift fibrecement panels off each other, never slide them, since scratching of faces may occur. To carry the panels, stand them carefully on edge and use two people to lift them (one person at each end), taking care to protect the face from scratching or other damage. SITEWORK Tegral fibrecement panels can be cut on site. Fixed panels should be protected from damage. One way is to start at the top of the façade and work down the wall, moving scaffolding as work proceeds.

TECHNICAL SUPPORT Tegral's team of Technical Representatives is available to provide information, samples and design assistance and may be contacted through the Tegral office. For detailed technical assistance please contact us at +353 (0) 59 86 31316 or by e-mail at [email protected]

OTHER TEGRAL PRODUCTS THRUTONE-PLUS SLATES Tegral slates are renowned throughout the construction industry. Thrutone-Plus slates come with a 20 year colour guarantee and are available in a range of sizes and shapes. A complete kit of accessories complements the product. CLASSIC NATURAL SLATES From a variety of quarries in Spain and North and South America, Tegral offer a number of highly successful brands including Villar del Rey, Bretona and Canadian Heather. PROFILED SHEETING A range of fibre cement roofing sheets and general purpose lining boards is available from Tegral. CLAY TILES Eternit and Hawkins machine-made plain clay tiles, Ashdowne handcrafted plain clay tiles and a complete range of clay ridges can be sourced from the company.

Tegral Building Products Website: www.tegral.com Technical support email: [email protected]

Tegral Building Products Ltd. Athy, Co. Kildare Tel: +353 (0) 59 863 1316 Fax: +353 (0) 59 863 8637 email: [email protected]

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