#132013www.architectum.comInternational Magazinefor Roof and Façade Architecture

02 Editorial ImprintPhoto: Christian DusekEditorialFranz KolnerbergerHeadProduct ManagementRoof SolutionsDear Reader,Can you imagine clay roof tiles exceeding their limits?The 13th issue of Architectum illustrates how clay rooftiles can still go beyond all expectations. Which is whywe have extended the subtitle to: International Magazine for Roof and Façade Architecture. Before I introduce this latest edition, let us take a look back to thephotograph of the animated façade on the cover ofour previous issue. This stunning façade of the Dutchmultifunctional building “Zonneboom” designed withtailor-made Koramic roof tiles won the latest IFD (International Federation of the Roofing Trade) award.Congratulations Drost & Van Veen Architects!I would now like to invite you on a journey acrossEurope and as far as Asia where different projects illustrate that clay roof tiles offer more than just protection. Pritzker Prize winner Wang Shu even uses reclaimed tiles to create new worlds. Come and discover urban planning and architectural qualities onroofs and façades. When roof and façade merge thetile becomes a dominant factor in appearance andcolouring. Traditional solutions stand next to ambitious concepts, which amaze us with their aestheticappeal and material quality. An unexpected interpretation of the built environment awaits you in both refurbishment projects and new buildings. And in allcases the clay roof tile displays all its qualities withease, in terms of formats, colours, functions, and durability.1216Let yourself be surprised!ImprintEditor Wienerberger AG, 1100 Wien Publisher Österreichischer Wirtschaftsverlag GmbH, 1050 Wien Chief Editorship ChristineMüller (Österreichischer Wirtschaftsverlag), Marion Göth (Wienerberger AG) Collaboration Rūta Leitanaitė (LIT), Marion Kuzmany (AT),Christian Kriemelmeyer (DE), Gerhard Halama (DE), Sabine Merlevede (BE), Arnaud Mounier-Duchamp (FR), Michelle Richards (UK), ElaineLiversidge (UK), Balciunas Dainius (LIT), Sabaitis Tomas (LIT), Monika Sikorska (PL), Alexa Uplegger (DE) Photographs Marc Sourbron(6–7, 28–29), Ruud Peijnenburg (10–11, 22–25), Verplancke (12–13), Algimantas Kančas/Gustė Kančaitė (16–19), Stéphane Chalmeau(20–21), Andrew Smith SG Photography Ltd (26–27), Piotr Deszkiewicz/Hotel Krasicki (30–31), Polish Roofers Association (PSD) (34–35)Graphics and design Simon Jappel (Österreichischer Wirtschaftsverlag) Printing Stiepan & Partner Druck GmbH,Hirtenbergerstraße 31, 2544 Leobersdorf, Production Ueberreuter Druckzentrum GmbHWienerberger AGA-1100 Wien, Wienerberg CityWienerbergstraße 11T 43 (1) 601 92-0, F 43 (1) 601 [email protected], 08

Contents 03040608301012141626202226282830322234Master of RecyclingWang ShuLiving in a tree – right inthe city centreAntwerp BelgiumAesthetic combinationof wood and clayMorre FranceA meandering town hallDen Burg the NetherlandsA house sets sailHeist-aan-Zee BelgiumTiled Roof XXLTitisee GermanyArchitecture for art ina natural settingNida LithuaniaTransparency at alllevelsBasse-Goulaine FranceLiving and working inthe barnLeidsche Rijn the NetherlandsIndustrial buildingreusedEast Malling Great BritainAzure blue view intothe futureHouthalen-Helchteren BelgiumAward-winning hotelin a heritage-protectedcastle Lidzbark Warmiński PolandClay-coloured urbanimplantAnykščiai LithuaniaThe long road of becoming a masterRoofers’ Championship Poland

04 Wang ShuMaster of RecyclingNingbo Historic Museum,2003-2008, Ningbo, ChinaPhotograph: Lv HengzhongThis year, the world’s most renowned architectureaward was conferred to a Chinese architect for the veryfirst time: Wang Shu who stands out not least due to hissophisticated re-use of demolition bricks and tiles: “Therehas always been a recycling tradition in China. I call itrecycled construction.”“Old bricks and tiles convey a sense of time andthe message of natural substances which are ableto breathe. We are constantly confronted with carelessly discarded demolition materials. I want to respond to this situation with my design” Wang Shuexplains the use of old bricks for his buildings. Theconcept of recycling bricks and tiles from demolished traditional houses has evolved into a specialityof Hangzhou-based “Amateur Architecture Studio”,which was established by Wang Shu and his wife LuWenyu. “Amateur” stands for the spontaneous andexperimental aspects of their work – contrary to, forexample, “authoritative” or “monumental”. The combination of a local understanding of culture and traditional craft methods with experimental designs andecological future-oriented construction make “Amateur Architecture Studio” unique.Wang Shu characterises his access to the Chinese architectural tradition as an important componentof his concepts: “Traditional architecture in China isbased on local origins, on material orientation, theclimate and a lifestyle, in which people maintain aclose relationship with nature. It is not about a foreverunchanging life, but about the ability to accept changes in nature and respond to them; this also speaksfor sustainable, environmentally compatible building,which I want to express in my design. For me ‘banalretro looks’ and discussions about ‘style’ and ‘symbolism’ are meaningless.”Environmentally compatible construction In 2007, the Xiangshan Campus of theChina Academy of Art in Hangzhou was completed,where more than 2 million tiles from demolished buil-

Wang Shu 05Tiled Garden, 2010, 10th Architecture Biennale, Venice, ItalyPhotograph: Lu Wenyudings were used for the roof. In the same year, thearchitects received the “Global Award for Sustainable Architecture”. One of their most significant projects is the Ningbo Historic Museum completed in2008. The solid building that looks like a fortress isdistinctive due to the massive volumes cantileveringoutward towards the top, and which are traversedby courtyards, alley-like recesses and stairs. Themost striking component, however, are the facadesfor which tiles obtained from demolished traditionalhouses in the surrounding province were re-used asa facing layer. Old, partly broken and new materialscombine to form an impressive collage of about 20different types of grey and red natural stones, tilesand bricks.In 2010, the architects designed the ChinesePavilion at the 10th Architecture Biennale in VeniceXiangshan Campus, China Academy of Art, phase II, 2004-2007, Hangzhou, ChinaPhotograph: Lv Hengzhongfeaturing the impressive “Tiled Garden” installation,which stretched across the pavilion’s forecourt as alarge accessible clay tile roof.In May 2012, Wang Shu was awarded the PritzkerPrize, the highest accolade for architects. By nominating Wang Shu the jury sent an important signal, andone which represents an alternative to China’s currentdevelopment that is mainly characterised by investment projects and a lack of building culture.

06 Antwerp BELGiumLiving in a tree –right in the city centreWhen an old lift factory was demolished in a denselybuilt-up district in Antwerp, space was freed up for newdevelopment: instead of the traditional terraced houseswith two gables, the architects stacked up differenthousing types. The result is a dynamically animated rooflandscape made up of green glazed clay roof tiles.

Antwerp BELGIum 07In this green tower consisting of six residential units arrangedaround a large green courtyard one almost feels like being inthe crown of a tree. The design of the individual floor plansis equally original, because the architects from Import ExportArchitecture formally based their designs on the cross-sectionsof different fruits.The architects have conceived a tree-like residential tower consisting of six units arranged around agreen inner courtyard. Import Export Architectureanswered the question of how you can prune awayparts of a densely built-up inner city area with solutions inspired by the cross-sections of various fruits:an avocado, an apple, a tomato or a kiwi. The possibilities were obvious, with the extremes ranging fromthe removal of a large, central kernel (as in the avocado) around which buildings can be constructed, tothinning out the built-up area by picking out discretesmall seeds (the kiwi) with equally dispersed structural developments.Stacked up living Instead of constructing atraditional terraced house, the architects stacked sixdifferent typological layouts in a block adjacent to thestreet. The volumes are displaced horizontally with respect to one another and are crowned with a roof terrace. The result is a dynamic façade made up of interlocking volumes that the mind cannot absorb in justa single glance. The original idea of creating a verticalfaçade of greenery was quickly abandoned. Instead,the architects took photographs of the crown of atree, which they then translated into suitable materials. The photo was blown up until the individual pixelscould be seen. Exactly the same arrangement of pixels was then turned into a wall cladding by applyingthe pattern in three shades of green to glazed clayroof tiles. The architects‘ preference was for clay tilesbecause they wanted to use a material as a way ofintroducing a suburban element into the dense citycentre context. The bark-like structure of the groundfloor plinth, which is finished with brown facing bricks,extends the tree metaphor.The view of the city is provided by square windowopenings framed with coated aluminium, with the actual window being recessed. The positioning of eachof these openings has been carefully considered, sothat they act as frames for particular elements of thecityscape: a church tower perhaps, or an architecturally especially attractive building.InfoProject Construction of an apartment building with six residential units for theinner-city areaClientAG Vespa – autonomous municipalcompany for real estate and urbanprojects in the city of AntwerpArchitectIEA Import Export Architecture,AntwerpContractorD’Hulst Van Rymenant, LierRooferLGJ Dakwerken, WesterloClay roof tilesVHV glazed,three shades of green

08 Morre FranceAesthetic combinationof wood and clayAfter a general refurbishment, a detached house in Morrenear Besançon reappears with a new livery made of woodand clay. The appealing material combination turns out tobe an ideal solution in every respect.Energy-efficiency, comfort, aesthetics, i ntegrationinto the surroundings, and respect for the environment – these were the owner’s standard for thereconstruction and refurbishment of his residence. Architect Alain Brustel from Design Architecturefound the solution fulfilling all the client’s demands byusing wood and clay roof tiles as building materials.In perfect harmony Construction worksonly spared the solid building core; the new timberstructure for the roof and façade renovation createsthe impression of a completely new building. Clayroof tiles in patinised brick-red – or more specifically,rectangular plain tiles laid in a cross bond formation– were used for both gabled roofs as well as for thefaçade on the upper level. The larch wood cladding ofthe remaining façade areas and the clay material perfectly complement each other in terms of finish andnatural colouring. “The shades of the clay roof tileswere selected on the basis that they will over timeblend in with the cladding made of untreated larchwood. The selection of these natural building materials requiring little maintenance is also key to achievingthe sustainability provided for in the context of thisproject” the architect explains.The entire refurbishment was planned and executed as part of a bioclimatic low-energy concept, withthe combination of wood and clay proving to be par-

Morre France 09Very ecology-minded and completely refurbished, this detachedhouse presents itself in a new livery made of wood and clay. Eventhough the building core was maintained, the new envelope and thetimber structure for the roof and façade create the impression of anew building.ticularly efficient in addition to the materials’ aesthetic quality. The large glass fronts allow the necessarysolar radiation, thus ensuring a heat gain in winter.The thermal insulation consists of wood shavings; theheating system, too, is designed to use wood as fueland it is complemented with an additional supply andexhaust air system. The result is a building in harmony with nature, which with regard to the selection ofmaterials used gives priority to both purely aestheticand ecological aspects.InfoProject General refurbishment of a detached houseClientPrivate, MorreArchitectDESIGN Architecture, Besançon,Alain BrustelRooferSimonin Frères, MontlebonClay roof tile301, rustic

010 Den Burg the NetherlandsA meandering town hallThe design vocabulary and material selection of the newtown hall in Den Burg on Texel, an island in the Wadden Sea,bear the signature of the architects Alberts & Van Huut. Thisrelatively low building with visible references to nature andthe surroundings was developed in conjunction with theisland’s residents.Next year, the practice Alberts & Van Huut fromAmsterdam will celebrate its 50th anniversary. Projects by the architectural practice show a consistentapproach: nature is a constant source of inspiration.“We wanted to depict the meandering pattern of themudflats and the dunes on and around Texel in thetown hall design.” The characteristic shape of sheepfolds with a steep roof inclination typical of Texel,where the ridge reaches its highest point at the frontand in the middle of the building, also arouses clearassociations to the new town hall. In-between, thebuilding “meanders”, both with its ridge line and withthe façade segments.In the interest of participation Theexperience gained in the previous twelve town hallprojects motivated Alberts & Van Huut to intensivelyinvolve the population in the design process. For thepublic meetings, the architects brought paper, modelling clay and paint to help the citizens express theircreativity. School children from the area, too, were invited to make a contribution to the house of community, for example, by creating tile pictures, which arenow in the completed building and are appreciatedby all users.Strong link to nature The floor plan of thetown hall describes an open circle with the entrancearea and the assembly hall is accommodated in themiddle of the circular arch. Security and contact withthe surrounding landscape were the underlying design parameters for the architects. The tall windowsof the assembly hall open up an unrestricted view tothe town centre of Den Burg.

Den Burg the Netherlands 011Nature served as the primary source of inspiration for theconstruction of the new town hall, because the architectswanted to make formal references to the meandering dunesand mudflats of the surrounding landscape. Furthermore,the building was developed with the involvement of theresidents.On the inclined façades with irregular window rrangements and on the prominent roofs adjoiningaone another, clay roof tiles and facing bricks wereused respectively as roofing and cladding material.The relatively small formats of the ceramic elementsare very well suited for the unusual shapes of this project. “We like to work with roof tiles and facing bricksand we use them a lot” Max van Huut says. “They agebeautifully. When these materials get dirty, they canbe cleaned relatively easily, and the building looks likenew. On top of that, the material is easy to recycle.”The colour of the walls is coordinated with the colours of dunes and mudflats all around. The architectsopted for wine-red for the window and doorframes,to tone in with the ceramic roof elements and wererefreshed with the green patinised copper details ofthe rainwater gutters.InfoProject New town hall of Den Burg on theIsland of TexelArchitectAlberts & Van Huut, B.V., AmsterdamClay roof tileDatura, rustic engobe

012 Heist-aan-Zee BelgiumA house sets sailOn an attractive corner site on the market square ofHeist-aan-Zee, an old café was replaced by a new multifamily building with a retail unit, its prominent arched roofmakes a prominent statement.

Heist-aan-Zee Belgium 013This residential building with a prominent arched roof setsa conspicuous signal. Red plain tiles, whitewashed brickwork and grey window profiles together with architecturalelements, which relate to the local tradition and which wereinterpreted in a contemporary style, characterise the distinctive overall impression.The architect answered the client’s request toconstruct a building that would be special and parti cularly characteristic in the specific location with are-interpretation of the Anglo-Norman architecturalstyle, which is typical of the area but slightly ponderous. Locally known materials such as red plain tiles,whitewashed brickwork and grey window profiles areused as predominant elements of this concept. Thearchitect borrowed various architectural elementsfrom local tradition and reinterpreted them in a contemporary way. Additionally, he arranged these elements in a playful, surprisingly modern composition.A distinctive roof The most prominent elementof the building is the roof, which covers the longerone of the two building sides with a semicircular archspanning from the ridge to the eave. The windows aswell as two dormers and vertical strip windows arepositioned in the curved roof surfaces. On the frontside, the edges of the roof were designed as narrowas possible in order to create the impression of a billowing sail.The façade section formed by the arched roofwas clad with natural red plain tiles and could thusbe constructed at relatively reasonable cost; additionally, it provides optimal building insulation. Archedlaminated beams are fixed to the floor slabs and formthe structural framework of the roof, while the cornerof the building is supported with an additional metalstructure.Dynamic façade Towards the south, the façade is turned towards the market square. Unlike thehomogenous arched roof façade, this one is brokenup with its cantilevered balconies. The balconiesseem to literally project from the front side of thearched roof and give this elevation of the building acompletely different dynamic. Due to their positioningabove one another, the balconies act as a protectionagainst too much direct sunlight, however they allownatural daylight to enter the rooms when the position of the sun is low during the winter months. Thatway, they contribute to a pleasant interior ambience.The glass balustrades of the balconies are made ofetched glass panes with the intensity of the etchingranging from opaque at the bottom to transparent atthe top. This solution provides an equally efficient andelegant visual protection.The ground floor with a fully glazed retail unit located at the corner of the building forms a plinth for thethree upper levels accommodating four apartments,one of which is a maisonette. A penthouse apartmentwith an attic room underneath the arched roof formsan exclusive termination at the top – whereas a largecollecting tank for rainwater was located in the basement.InfoProject Retail unit and four apartments,Heist-aan-ZeeArchitectFrederik Grimmelprez, BlankenbergeBuilding contractors Shell construction: Bouwonderneming Canneyt, Oostkamp Roof structure: Frans Fierens,Zedelgem Roofing: Dirk De Prest, OedelemClay roof tilesFaçade and arched roof:301, natural red

014 Titisee GermanyTiled roof XXLDue to enormous snow loads in the Black Forest region, theoversized tiled roof of the new “Badeparadies Schwarzwald”at Titisee confronted the designers and buildingcontractors with extreme technical demands.Titisee ranks among the most popular destination for excursions in the Black Forest. In 2011, thearea was enriched with the water park called “Badeparadies Schwarzwald”. Its external building shapecan be clearly made out from a distance because itis practically made up of nothing but roofs. The aimwas the design of a both aesthetic and durable roof,which meets the building’s extreme physical as wellas structural requirements in this snowy environment.Two enormous pitched roofs made of clay roof tiles,which are positioned at a right angle to each other,provide the required cover and characterise the building with regard to its visual appearance and its construction. Using clay roof tiles, a traditional roofingmaterial tried and tested in this area, made it possibleto harmoniously integrate the complex into the locallandscape despite its impressive dimensions.Technical challenge The building with a Tshaped floor plan consists of a glass pavillion with apanoramic roof that can be opened up, a long claytiled roof with inclined cantilevering glass fronts at thegable ends and a central light strip, as well as a second, slightly smaller clay tile roof, which covers theglazed entrance area at the front. The surface area ofthe large roof measures about 4,000 square metresand spans across the water slide paradise. The dimension of the enormous roof landscape, however,also demanded the implementation of special technical solutions, because the trapezoidal roof structuremade of laminated wooden beams supports not justthe roof load but also a majority of the slides suspended from them.Braving wind and ice Extreme snow and icemasses of up to two metres are not uncommon in thisregion of the Black Forest. Primary importance wastherefore attached to a winter-proof design. The socalled “Reformziegel” clay tile by Wienerberger wasused in the red engobe colour for the roof. Furthermore, the new model is equipped with the integrated“SturmFIX” fixing system. The oversized roof areas

Titisee Germany 015Large tiled roofs require special solutions: in the winter of 2011/2012, snowand ice accumulated along the eaves to a height of about seven metres.About 6 tons of snow per running metre of eave in extreme cases must beexpected. Consequently, snow guards were not used at all for these claytile roofs with very long rafters. Snow can slide down unrestrictedly. Photoat the top: The roof drainage is done with large paved gutter channels laidout all around the building.have mastered the first storms and the seven metres of snow and ice, which accumulated in the winterof 2011/2012 along the eaves, without any difficulty.The consistent all-ceramic detailing of the large roofareas was developed in close collaboration betweenthe designers, the involved craftsmen’s businessesas well as the expert service consultants from Wienerberger. Many features implemented in this roof arebased on old building knowledge developed in thearea, which proved to be successful with this roof.InfoProject Badeparadies Schwarzwald TitiseeClientWUND Gruppe, FriedrichshafenStructural engineerHolzbau Amann GmbH, Weilheim-BannholzRooferRudi Metzler GmbH, HinterzartenClay roof tileCosmo 13 S, red engobe

016 Nida LithuaniaArchitecture for artin a natural settingSet in the picturesque natural environment of the NeringaPeninsula, the new “Nida Artists’ Colony” provides anexciting venue for the activities of the Vilnius Art Academy.Architectural practice Kancas Studio developed a boldand rigorous building, which due to its plainness and darkcolour concept perfectly blends in with the protectednatural environment.

Nida Lithuania 017

018 Nida LithuaniaSince the 19th century, Nida, a small fishermen’svillage, has developed into a popular summer residence for artists. Painters, actors, writers, and philosophers have been attracted by the pristine landscape between white dunes, the sea and pine woodsand they have travelled to this remote location fromall of Europe.Artistic aura with fresh momentum Thenew complex of the “Nida Artists’ Colony”, a subsidiary institution of Vilnius Art Academy, was recentlybuilt here following on the artistic tradition of this location, and now it gives this venue a fresh impetus.The new building accommodating five artist’s studios,students’ dormitories and a multipurpose hall waserected on the old foundations of a warehouse datingfrom Soviet times. The purpose of the new complexis to host a variety of events including conferences,seminars, art festivals, and exhibitions and provide acreative environment for art students, professors andartists in dialogue with the public.The large two-storey timber building is dividedlengthwise into three sections of the same size, whichare each covered with clay roof tiles. At first glance,the resulting impression is that of three terraced houses rather than that of an event centre; this was a deliberate act to reduce the scale and create a homelyatmosphere.Precise architectural vocabulary Oncloser examination, however, a sensitively elaboratedbuilding emerges, which with its clear floor plans andits plain external appearance makes use of a precisearchitectural vocabulary. Not least, the same dark

Nida Lithuania 019As visitors on the open-air terrace are at eye level with the roof areas, thedetailing of the tile had a great visual importance.The zinc-red colour characterising the underside of the eaves as well as thewalls of the entrance façade adds vibrant contrasts. The cantilevered roofand the vertical elements create a shady veranda, which invites people torelax.grey shade chosen for the timber walls and the rooftiles makes the building look composed and monolithic.A generous, central wooden terrace, which is recessed into the middle one of three pitched roofs onthe first floor, is available for contemplative moments.As visitors are standing on a level with the surrounding roof surfaces in front of their eyes, great importance was assigned to the selection and detailing ofthe roof tile. A slightly glossy clay roof tile was chosen,which gives the roof surface vividness as its colourvaries according to lighting conditions.Two semi-public walkways divide the buildingcrosswise into three areas of different sizes. A walkway partly surrounding the building provides anotherconnecting zone between the interior and exterior;this passageway also includes the entrance façade,which is designed as the most distinct detail of theentire building. Here, the rear façade level, wherethe entrance doors and undersides of the eaves are positioned, is painted in a vibrant red. On the façadelevel in front, narrow vertical wooden slats create anarcade-like effect. The long and narrow red-linedforeground created here allows associations to a Buddhist temple complex.With the construction of this modern project in aprotected natural environment, the client, Vilnius ArtAcademy, sets an important example in contemporary architectural history.InfoProject Nida Artists’ ColonyArchitectsKancas studio – AlgimantasKančas, Tomas Petreikis, GustėKančaitė, Tomas KučinskasClientVilnius Art AcademyContractorUAB RekostaClay roof tilesActua 10, dark grey

020 Basse-Goulaine FranceTransparency at all levelsThe construction of the new town hall is part of theredevelopment concept for the Basse-Goulaine towncentre and, most notably, it serves to open a park locatedat the heart of the commune, which was previously closedfor the public.

Basse-Goulaine France 021Thanks to its clean design vocabulary,this commanding three-storey townhall perfectly integrates into its naturalenvironment. Although the plain tiles usedfor this building are a traditional material,here they prove that these tiles are aperfect solution not just for roofs but alsofor modern applications on contemporaryfaçades.The design by DLW architecture from Nantes isbased on transparency and the accessibility of thenew town hall for all citizens. Thanks to its clean design vocabulary, this commanding three-storey townhall perfectly integrates into its natural environment.The compact upper level, which is clad with light plaintiles, seems to hover above the fully glazed groundfloor; visual links between the town and the park,between the interior and exterior make the buildinga transparent connecting link in both the political andurban context.Opening up towards the town Followingthe site contour, about one half of the semi-basementwas embedded in the ground, while its façade opensup this level towards the road and is thus providing adirect access to the road for the municipal employeesworking in the offices. This fully glazed level seemsto have grown into the park. It is dedicated to welcoming the public and also provides rooms for officialoccasions. The upper level is reserved for in-housedepartments of the municipal authorities. The solidfaçade, which is clad with light plain tiles, offers moresecluded areas, and a large terrace with a glass balustrade faces towards the park.Attractive mixture The entire building isdesigned as a mixed construction of solid concretecomponents and a timber framework. In combinationwith glass and shimmering light-grey plain tiles, whichdue to their thin glaze reflect a variety of shades, theresult is an extremely modern and high-contrast material effect. The selection of the tile was guided byconsiderations of the traditional building techniquefrom the South Loire Valley, where plain tiles are stillfrequently used. Beyond the elegant visual effect, thebuilding with an effective floor area of 1,500 squaremetres also meets low-energy building standards.InfoProject New town hall of Basse-GoulaineArchitectDLW architecture, NantesClientMunicipality of Basse-GoulaineContractorSMAC, NantesClay roof tile301, white glazed

022 Leidsche Rijn the NetherlandsLiving and workingin the barnIn an old cherry orchard in the Dutch town of LeidscheRijn, three new, distinctive residential buildings forartists were constructed. With its rather unconventionaldesign, architectural practice ONB relates to theagricultural past of the location, because the

d’hulst van rymenant, lier rooFEr lgJ dakwerken, Westerlo Clay rooF tilES vhv glazed, three shades of green in this green tower consisting of six residential units arranged around a large green