ALUMINIUM IN

ARCHITECTURE
S U R FAC E T R E AT M E N T
 IMMERSE YOURSELF IN THE WORLD
OF SURFACE TREATMENT

A N O D I S I N G A LU M I N I U M

→ p  rovides long-term protection

against weathering influences

→ e mphasises its natural
structure

→ i s refined in various natural

shades – from discreet tinting
to intense colouring

→ a
 llows for aesthetic light
reflections in both matt and
gloss versions

→ o
 ffers additional effects with
grinding and brushing

→ r educes care and maintenance

requirements

→ c onserves resources: can be

dismantled into individual
components and is 100%
recyclable

Anodised surfaces from BWB don’t just appeal visually, they also lend a special depth.
The refined dipping process gives the basic aluminium material long-lasting and
reliable protection. Be it colourless or in one of a wide spectrum of colours – anodised
surfaces from BWB last and are resistant for many decades. So even large-scale
installations can be created to order. This opens up an exceptionally wide range of
potential applications – for both façades and interiors.

01 S U R FAC E T R E AT M E N T
 Reben school complex Arbon, Architecture: S2 / Stucky Schneebeli Architekten, Images: Beat Bühler
SANODAL

BWB - Argentan 1

BWB - Argentan 2

BWB - Brass 1 RANGE OF GOLDEN SHADES

The Sanodal adsorptive colouring process locks

the golden dye securely in the pores of the
anodised layer. The final sealing process provides
the coloured pigments with lasting protection
against weathering influences.
BWB - Brass 2

BWB - Gold 1

BWB - Gold 2

03 S U R FAC E T R E AT M E N T
The University of Sheffield – The Diamond, Architecture: Twelve Architects, Images: Jack Hobhouse
COLINAL

BWB - Colinal 3115 BWB - Colinal 3175

BWB - Colinal 3145 BWB - Colinal 3178

BWB - Colinal 3165 BWB - Colinal 3180

TRADITIONAL EARTHY COLOURS

During the Colinal electrolytic dipping

process, chromophoric metal salts are
deposited deep in the surface of the
aluminium. The Colinal treatment gives
aluminium a light-fast colouring, ranging
from light to dark bronze tones.

S U R FAC E T R E AT M E N T 06
 Townhouse in Kriens, Architecture: Burkard Meyer Architekten BSA, Images: BWB Surface technology
PERMABRONZE

SHIMMERING BRONZE SHADES

The Permabronze multi-stage colouring process

stands out for its natural colour gradation.
Whether for exquisite building envelopes or
accentuated window structures, Permabronze is
lively in appearance and lends a special depth.

BWB - Bronze 3

BWB - Bronze 4

BWB - Bronze 5

BWB - Bronze 6

07 S U R FAC E T R E AT M E N T
Ophthalmology Clinic of Lucerne Cantonal Hospital in Lucerne, Architecture: Schneider & Schneider Architekten ETH BSA SIA AG, Images: Peter Ruggle
EXCLUSIVE
PERMALUX

BWB - Permalux P1

BWB - Permalux P2

BWB - Permalux P3

BWB - Permalux P4

HIGHLY RESISTANT COLOURING

The Permalux process stands out due to its

especially hard-wearing anodised layer and
timeless colouring. A Permalux building envelope
has an elegant appearance, is exceptionally
resilient and highly resistant to corrosion: a clear
statement of future-proof architecture.

S U R FAC E T R E AT M E N T 10
 Semi-detached house in Bonaduz, Architecture: Ritter Schumacher AG, Images: BWB Surface technology
EXCLUSIVE
PERMAGREY

LUXURIOUS GREY TONES

The Permagrey coating binds the alloy elements of the

aluminium with the anodised layer and gives the surface
an anthracite colour. Surface irregularities are
emphasised by the colouring, and the surface of the sheet
is distinguished by the characteristic grain. The process is
for use exclusively on G77Ac sheets, and is not available
for extruded sections and other aluminium sheets.

BWB-Permagrey 1 BWB-Permagrey 3

BWB-Permagrey 2 BWB-Permagrey 4

11 S U R FA C E T R E AT M E N T
Schlossbad in Neumarkt, Architecture: Diezinger Architekten GmbH, Images: Heiko Stahl
PERMACOLOR

BWB - Permablue 1

BWB - Permablue 2

COLOURFUL LIGHT PLAY

The shades of green and blue created by the

Permacolor process aren’t achieved through the
use of dyes, but by a specific light-scattering
BWB - Permagreen 1 layer structure with metal salt intercalation. The
resulting colours change depending on which
angle you view them from, the position of the sun
and the design of the aluminium surface. The
colour variations lend the façade a particularly
vivid look.

BWB - Permagreen 2

S U R FAC E T R E AT M E N T 14
 Goldern apartment buildings in Aarau, Architecture: Schneider & Schneider Architekten ETH BSA SIA AG, Images: Leonardo Finotti
SANDALOR

olive yellow

Sandalor S100-0

Sandalor S100-1

WIDE RANGE OF COLOURS

The two-stage SANDALOR process makes it

possible to achieve five shades each of olive
Sandalor S100-2 yellow, gold, red, blue and turquoise. The dyes
used are optimised for outdoor use and guarantee
excellent light-resistance.

You’ll find all 25 SANDALOR colours at the end of

this brochure or online at www.bwb.ch/colours.

Sandalor S100-3

Sandalor S100-4

15 S U R FA C E T R E AT M E N T
FINISHES

GRINDING AND BRUSHING (E4) PRE-TREATMENT

The finish with an elegant structure
Aluminium surfaces require an appropriate
pre-treatment for the anodising process.
Mechanical pre-treatments such as grinding
and brushing (E4) bring out the metallic
characteristics of the aluminium by giving it a
refined texture. Contamination, corrosion or
slight processing traces must be treated or
concealed during purely chemical pre-
treatment. After what’s known as etching
(E6), the surface has an even, matt finish.

Natural tone EV1 (E4)

We’ll work with you to find the right finish for
your project. We will be happy to trial other
pre-treatments such as grinding (E1),
ETCHING (E6) brushing (E2) and rough grinding.
The fine matt effect

DECORATIVE, HIGH-QUALITY ANODISING

The appearance of the anodised layer changes

depending on the aluminium alloy. In the case
of colourless anodising, the natural tone varies
from silver grey for decorative anodising to
slate grey for aluminium with a high proportion
Natural tone EV1 (E6)
of other metals. For architecture and design
applications, please only use aluminium that is
labelled as being suitable for decorative
anodising.
COLOURS
OU
QUA R
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LAB ITY
ELS
Qual
Stru anod SS
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Britis ral Glazin
h Sta g
SANODAL COLINAL PERMABRONZE PERMALUX PERMAGREY PERMACOLOR SANDALOR SANDALOR SANDALOR SANDALOR SANDALOR ndar
d
olive yellow gold red blue turquoise

BWB - Argentan 1 BWB - Colinal 3115 BWB - Bronze 3 BWB - Permalux P1 BWB-Permagrey 1 BWB - Permablue 1 Sandalor S100-0 Sandalor S120-0 Sandalor S140-0 Sandalor S150-0 Sandalor S160-0

BWB - Argentan 2 BWB - Colinal 3145 BWB - Bronze 4 BWB - Permalux P2 BWB-Permagrey 2 BWB - Permablue 2 Sandalor S100-1 Sandalor S120-1 Sandalor S140-1 Sandalor S150-1 Sandalor S160-1

BWB - Brass 1 BWB - Colinal 3165 BWB - Bronze 5 BWB - Permalux P3 BWB-Permagrey 3 BWB - Permagreen 1 Sandalor S100-2 Sandalor S120-2 Sandalor S140-2 Sandalor S150-2 Sandalor S160-2

BWB - Brass 2 BWB - Colinal 3175 BWB - Bronze 6 BWB - Permalux P4 BWB-Permagrey 4 BWB - Permagreen 2 Sandalor S100-3 Sandalor S120-3 Sandalor S140-3 Sandalor S150-3 Sandalor S160-3

BWB - Gold 1 BWB - Colinal 3178 Sandalor S100-4 Sandalor S120-4 Sandalor S140-4 Sandalor S150-4 Sandalor S160-4

For a better colour evaluation, we recommend ordering initial samples in A4 format,

as it is not technically possible to replicate the exact colour of the anodised
aluminium in print. The Permacolor and Permagrey processes are only available
with the E6 finish and are shown accordingly. All other samples are shown with the
BWB - Gold 2 BWB - Colinal 3180 E4 finish and are also available with the E6 finish as an option.

www.bwb.ch/colours
ORDERING SAMPLES COLOR COLLECTION

ORD
ER A
SAM
PLE
B OX
NOW

YOUR PERSONAL SELECTION INSPIRING AND SELECTED COLOURS

You can find the full range of BWB colours online at The BWB Colour Collections present coordinated ranges of four specially selected colours. Packaged
www.bwb.ch/colours together in a high-quality sample box, they display the latest trends and processes.

It’s easy to order samples using our website, or you can give us a Order our sample collections at
call on +41 58 861 90 10. www.bwb.ch/cc01
WE’LL BE HAPPY TO ADVISE YOU ON YOUR PROJECT

Do you need samples for your project, or do you have any

questions about choosing materials and processes?

Send us an email on architecture@bwb.ch

Or give us a call on +41 58 861 90 10

www.bwb.ch