Solutii pentru placarea fatadelor CORIAN® Exterior Cladding Corian Exterior Cladding
DUPONT CORIAN
AS AN EXTERNAL CLADDING SOLUTION
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Product bulletin
EMEA / English
www.corian.com
Lacq Community of Municipalities building, Mourenx, France; project by Gilles Bouchez, photo Arthur Péquin.
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TABLE OF CONTENTS
Introduction ________________________________________________________________________________________________________________________________________________________________________________ 2
A. DuPont Corian® Solid Surface as an External Cladding Material ________________________________________________________________________ 2
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B. Available Colours & Dimensions ___________________________________________________________________________________________________________________________________ 5
C. Performance Properties of DuPont Corian® solid surface for Exterior Applications _______________________________________ 7
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D. Ventilated façades __________________________________________________________________________________________________
______________________________________________________________ 8
E. Substructure for DuPont Corian® panels _________________________________________________________________________________________________________________ 10
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F. Invisible fixing systems ___________________________________________________________________________________________________________________________________________________ 11
G. Expansion Joints & Panel Connections _____________________________________________________________________________________________________________________ 15
H. Drawings of seams, corners and window solutions _________________________________________________________________________________________________ 17
I. Handling and preparation of Corian® solid surface sheets _____________________________________________________________________________________ 26
J. Transportation, Storage, Handling & Lifting, Maintenance _______________________________________________________________
_________________ 27
K. DuPont Corian® solid surface product warranty for exterior (wall)
cladding applications (EMEA Region Only) ____________________________________________________________________________________________________________ 28
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L. Referenced Documents __________________________________________________________________________________________________________________________________________________ 28
M. Disclaimer __________________________________________________________________________________________________________________________________________________________________________ 29
Left: Hotel Seeko’o, Bordeaux, France; project by Atelier King Kong; photo Arthur Péquin.
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INTRODUCTION
This document provides an overview of DuPont Corian® solid surface in ventilated façade systems
for the Europe, Middle East, and Africa (EMEA) region.
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Building practices and codes vary throughout the world. The guidance provided in this document
was developed for count
ries in EMEA as listed by DuPont at http://www.corian.com and should not
be used in other regions. For guidance for other regions please check the appropriate region at
http://www.corian.com or contact a local DuPont representative. Laws, building and safety codes
governing the design, engineering and construction of installations vary widely. It is the responsibility
of the purchaser to ensure that proper building practices and codes are followed for the location of
the installation.
A. DUPONT CORIAN SOLID SURFACE AS AN EXTERNAL
CLADDING MATERIAL
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DuPont Corian® solid surface is innovation through
beauty, colour and depth. It is strength and purity,
reliability and performance. But above all, it is
inspiration - a maverick, seamless material that can
transform any space, whether for interiors or exteriors,
through unlimited possibilities. Corian® solid surface
brings personality to virtually any type of environment,
enhancing and facilitating the lives of those who use
and
enjoy its unique potential. Crafted into almost
anything, in any place, for any purpose and in a wide
palette of colours, it offers the freedom to design, explore
and create. Long-lasting, hygienic, durable and elegant,
DuPont Corian® solid surface has a three-dimensional
formability that has been liberating inventive and artistic
minds for over 40 years. It is an advanced blend of
natural minerals and acrylic polymer. It is a synthetic
material - born of human imagination and exploration
- and the result of a reflection upon the demands of
design. To make the most of Corian® solid surface in a
world of changing environments, fashions and modes
of communication, the invitation to architects is to
transform this limitless material into a meaningful work
of form and function.
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DuPont Corian® solid surface is a solid, non porous,
homogeneous surfacing material, composed of about
⅓ acrylic resin (also known as polymethylmethacrylate
or PMMA), and about ⅔ natural mineral. The
mineral
is aluminium trihydrate (ATH) derived from bauxite,
an ore from which aluminium is extracted. For more
information on the composition of the material, please
consult the Material Safety Data Sheets (MSDS) available
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via the msds.dupont.com site or via your local supplier.
Supplied in sheets, it can be fabricated with conventional
woodworking tools into virtually any design. Corian®
solid surface is the original solid surface material made
only by DuPont.
The construction guidelines in this document were
developed specifically for use with the DuPont
Building Innovation products and non-DuPont
products recommended for use by DuPont that are
referenced in this document. End-Users should not
expect to get equivalent performance results when
using products other than those products specified
in this document.
Advantages of DuPont Corian® Solid
Surface for exterior applications
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DuPont Corian® solid surface offers quite some
advantages in a ventilated façade applicatio
n:
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HIGH PERFORMANCE DURABILITY
• Great resistance to impact
• Resistant to humidity
• Resistant to salt fog and Sulphur Dioxide (SO2)
• Resistant to fungus and bacteria
• Will not delaminate nor decompose
STRUCTURAL PERFORMANCE
FABRICATION AND INSTALLATION
• Lightweight for reduced structural load
• Ease of shop fabrication using high-speed carbide tipped
routing tools
• Flexural and tensile strength providing excellent
resistance to wind loads
• Compatibility with typical building components,
structural silicone and sealants
FIRE PERFORMANCE
• Low flame spread
• In the event of fire, Corian® solid surface will not melt
and will not create burning droplets
• Low smoke generation
• When burned, it primarily releases carbon oxides and
does not release toxic halogenated gases
WEATHERABILITY
• UV stable colour selections with excellent colourfastness available
• Resistant to bulk water absorption
• Weather-resistant system minimizes lea
kage from
wind-driven rain (ability to seam reduces the number
of joints)
• Ease of field fabrication and modification by simple
machining methods
• Multiple widths available to adapt to façade layout,
minimizing waste (e.g. window surroundings)
• Lightweight and easy to install
• High level of quality control provided by DuPont
Corian® Authorised EC converters / DuPont-Certified
Fabricators
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MAINTENANCE
• There are no pores to trap dirt
• Neither the surface nor the edges need to be sealed,
painted or protected
• Colours run through the entire thickness and cannot
wear away or delaminate, making the product
inherently robust
• Even covered with some of the most difficult dirt and
graffiti, the panels can be restored to their original
appearance through cleaning and sanding
• Excellent freeze-thaw resistance
• Under normal conditions, will require annual cleaning
only, with standard agents such as water and detergents
• Excellent resistance to
chemicals, detergents and
environmental pollutants
REPAIRABILITY
ENVIRONMENT - DURABILITY
• Ventilated façade allows for thicker insulation and
therefore lower energy costs
• Is durable, long-lasting. Panels can be repaired, if
necessary, rather than replaced (less material is needed
or discarded over the life of the building)
• Ventilated façades can be used for cladding renovation
to reach new insulation requirements
• If excessive surface damage is incurred after installation,
Corian® solid surface has unique repair possibilities. In
most cases it can be repaired on site with little difficulty,
using abrasive scouring pads and an orbital sander.
• In case of severe abuse, the damaged section can be cut
out completely and replaced using Corian® replacement
parts, DuPont Joint Adhesive and routing and sanding
equipment. Repairs should always be done by DuPont
Corian® Quality Network members.
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• Is inert, safe in use and has low VOC content
RENEWABILIT
Y
• Is non toxic
Corian® solid surface can be renewed at any time, using
abrasive scouring pads and an orbital sander.
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Design Flexibility with DuPont Corian®
Solid Surface
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LARGE PANELS
Large panels can be easily built up by adhering standard
panels with reinforced inconspicuous seams. The main
limitations are the ability of the substructure to
accommodate movement due to thermal expansion, the
weight capacity of the mounting system, and the
necessary expansion gaps (revealed or open joint designs).
Current mounting systems are limited to five meters
maximum height. The maximum width is governed
by the capability of the design to accommodate the
anticipated thermal movement.
Surface machining of DuPont Corian® sheet is typically
done with high-speed routing tools to create desired
features or shapes. Since DuPont Corian® solid surface is
relatively easy to cut and finish, without the need for
specialized diamond abrasives and saws, fabrication can
be done quickly and
with a high level of quality. Highspeed routers can achieve a fine level of detail for surface
cutting and can also be driven by CNC controls to
achieve intricate patterns and textures. Different finishes
(semi-gloss, mat or rough-textured) can be achieved with
various sanding or polishing steps.
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Colours run through the entire thickness, so edges are
in the same colour as the rest of the sheet, and revealed
joints will show no black gaps.
A broad range of geometric or natural patterns of
differing textural depth and dimension can be moulded
into the surface to achieve an unlimited variety of
architectural finishes. Laminating multiple layers of
DuPont Corian® sheet can be done with flat and
thermoformed pieces.
TRANSLUCENCY
THERMOFORMING
DuPont Corian® solid surface will allow some diffused light
transmission, depending on colour. In general, solid light
colours such as white and beige are the most translucent, and
dark colours are the least translucent. DuPont Corian® s
olid
surface can also be fabricated to achieve different levels of
light transmission by selectively back-cutting the material to
different thickness. As the material is cut thinner, it allows
more light to pass through.* The effect generated will depend
on the combination of material and lighting system variables.
The DuPont Corian® Illumination Series has been
specifically designed with more translucency than the
standard colours. Special considerations for these materials
are described in the DuPont Corian® Illumination Series
Fabrication bulletin.
The techniques above can be combined with shape
thermoforming to create a variety of two and three
dimensional shapes by different forming, shaping and
machining techniques into three- dimensional structures
with texturing, patterning or engravings. The possibilities
are almost unlimited.
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SURFACE TEXTURING, PATTERNING AND
ENGRAVING
There are many different surface treatments that can be
applied to DuPont Corian® solid
surface, including
machining or engraving (sanding, routing, sandblasting,
water jet, etc.), texturing (thermal moulds and presses),
and layering (laminating). Different techniques can be
used for surface finishing, partial surface cutting or full
cutting for different shapes, patterns or inlays. These
techniques enable high levels of customization for unique,
one-of-a-kind designs.
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Surface moulding and forming of DuPont Corian® solid
surface is typically done with medium-temperature ovens
and pressure moulds. A broad range of geometric or
natural patterns of differing textural depth and dimension
can be moulded into the surface to achieve an unlimited
variety of architectural designs and finishes. Sheets of
12 mm thickness can be formed to as tight as a 75 mm
inside radius.
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Procedures for the fabrication of DuPont Corian® solid
surface have been developed for many different forms and
applications. Please refer to the DuPont Corian® Fabrication
Manual for further detail
s.
* Reducing the thickness decreases the mechanical properties. This must be accounted for in the design.
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B. AVAILABLE COLOURS & DIMENSIONS
Many exterior cladding materials fade or discolour in
time due to weathering, but in many cases the obtained
natural patina may be acceptable or even desirable
(e.g. copper roofing). Individual DuPont Corian® solid
surface colours change differently and most often exhibit
changes in gloss and whitening which can be renewed
with cleaning and/or sanding. These changes are more
obvious in saturated, chromatic and dark colours and least
obvious in whites, lighter colours and many of the earth
tones. Ultimately it is up to the end user to determine if
these characteristics are acceptable in the application.
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The following material usage recommendations are
based on ASTM G7 and G155 standards. DuPont
Corian® solid surfaces colours are grouped into different
categories based on their colour stability in exterior
cladding applications.
The selection below represents
colours that are expected to meet architectural guidelines
for colour change of less than 5∆E*ab units over 10 years
(ASTM D2244). Glacier White and Designer White
are predicted to have colour change of less than 2∆E*ab
units over 10 years.**
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AVAILABLE COLOURS
Designer White
Glacier Ice
Antarctica
Venaro White
Glacier White
Cameo White
White Jasmine
Whitecap
Everest
Light Ash
Vanilla
Bisque
Abalone
Linen
Savannah
Bone
Sahara
Aurora
Lime Ice
Mint Ice
Ethereal Azure
Fossil
Raffia
Beige Fieldstone
Mojave
Dusk
Eclipse
Clay
Dove
Distinct Tan
Deep Night Sky
Deep Anthracite
Deep Nocturne
UV Warranty: based on many years of practical experience and the high quality of DuPont Corian® solid
surface, a 10 (ten) year UV warranty, guaranteeing that the colour will not fade or change by more than
5ΔE*ab units and gloss loss will not exceed 40% on a matte finish, is available for the above sixteen colours.
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The warranty he
rein does not cover DuPont Joint Adhesive, it covers only Corian® sheets products.
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This warranty is subject to terms and conditions which will be delivered to the customer by the local DuPont office
or representative.
** Please check with your DuPont Corian® solid surface representative for the latest updates on the recommended colours and dimensions available as a standard offering.
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THE FOLLOWING DIMENSIONS ARE AVAILABLE:
Standard Grade
Colour
Thickness
12 mm
Length
19 mm
Custom Grade
Width
3658 mm
760 mm
930 mm
1300 mm
Bisque
Bone
Cameo White
Designer White
Glacier Ice
Glacier White
Vanilla
All other
EC colours
Standard products can be ordered in different lengths, widths, or thicknesses when technically feasible. Special orders are
available at a premium price. A minimum volume is required
and delivery will have an extended lead time.
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C. P
ERFORMANCE PROPERTIES OF DUPONT CORIAN FOR
EXTERIOR APPLICATIONS
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DuPont Corian® solid surface has many desirable attributes for decorative exterior applications. These include good
colour stability, low moisture absorption, and resistance to stains, environmental pollutants, detergents, humidity, and
freeze-thaw conditions. Performance properties of DuPont Corian® solid surface for an array of industry standards
relevant for outdoor use are summarized in the table below.
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Property
Typical Result
Test
1750 kg/m
21,5 kg/m (12 mm sheet)
33,3 kg/m (19 mm sheet)
Category 1
8040 - 9220 MPa
57 - 74 MPa
0,76 - 0,93%
41 MPa (6000 psi)
10.4 MPa (1,5 x 10 psi )
0,4% minimum
(0,15 N-m/cm) (0,28 ft.-lbs./in.) of notch
15 N-m (130 in.-lb.)
ISO 7892
DIN EN ISO 178
DIN EN ISO 178
DIN EN ISO 178
ASTM D638
ASTM D638
ASTM D638
ASTM D256 (Method A)
ASTM D5420
Structural
Specific Gravity
Areal Weight
3
2
2
Impact
Flexural Mo
dulus
Flexural Strength
Elongation at break
Tensile Strength
Tensile Modulus
Tensile Elongation
Izod Impact (Notched Specimen)
Impact Test Resistance
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Fire Performance
Euroclass - Reaction to fire
B-s1, d0 - FR and custom grade
C-s1, d0 - Standard grade
EN 13501-1
39 x 10 /°C
0,77 W/(mK)
See exterior colour recommendations
0,6 weight%
No observable changes
DIN 51045
DIN 52612
ASTM G7 & G155
ASTM D570
ASTM C666
Surface easily renewed
ASTM B117
No effect
Does not support microbial growth
ASTM G85
ASTM G21
>85
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ASTM D785 (Rockwell “M” Scale)
ASTM D2583 (Barcol Impressor)
Surface easily renewed
AAMA 605.2
Surface easily renewed
ASTM D1308
Surface easily renewed
ASTM D2247
Surface easily renewed
ASTM D2248
Weatherability
Coefficient of longitudinal expansion
Thermal Conductivity
Colourfastness
Water Absorption, Long-term; 30-days
Freeze / Thaw Resistance
Salt Fog (Concentrated effects of coastal
environment exposure.)
Sulphur Dioxide (SO2) Resistance
Fungus Resi
stance
-6
Maintainability
Hardness
Nitric Acid / Mortar Resistance
(Acid rain and mortar resistance.)
Alkali / Acid Resistance
High Temperature with 100% Relative
Humidity
Detergent Resistance (Resistance to
commercial window cleaner solution.)
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D. VENTILATED FAÇADES
No matter what climate you find yourself in, moisture
is always an issue and can seriously affect the overall
performance of a building. The answer is a ventilated
façade, which is designed to breathe. Ventilated façades
have a space between the cladding and the outer wall an ideal location for insulation materials.
DuPont Corian® external cladding is highly suited for
ventilated façade systems. The “breathing” or envelope
systems, combined with DuPont Tyvek® breather
membranes, offer possibilities for high insulation values
and contribute to a healthy indoor climate.
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GENERAL GUIDELINES FOR DUPONT
CORIAN SOLID SURFACE VENTILATED
FAÇADES
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®
• For exterior wall cladding applications, Corian
exterior
cladding is typically installed as a ventilated façade: the
Corian® panels are mechanically fixed or bonded to a
framework which is fixed to the external wall of new
or existing (retrofit) buildings. An insulation layer is
usually fixed on the external wall.
• The external wall can be made of masonry, concrete, or
metal frame.
• Between the cladding and the insulation layer or the
external wall, there is an air space which should be
drained and ventilated.
• Ventilation requires a ventilated air cavity, at least
20 mm wide, and ventilation openings (gaps) at the top
and bottom of the façade, as well as the top and bottom
of windows and doors. Ventilation openings should
be at least 5 mm, openings larger than 10 mm should
be covered with ventilation profiles.
• Silicone should not be used to fill the gaps between the
panels. Silicone can interfere with the movement of the
panels and can collect dirt.
• When using a mechanical subframe and connection
system,
silicone should not be used to bond the panel to
the substructure in addition to the mechanical fastening
system as it will interfere with normal movement.
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Important aspects for engineering a ventilated façade
with DuPont Corian® exterior cladding:
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• Panels should be attached to the substructure so that
they are fully supported, yet able to move relative to the
substructure to accommodate thermal movement.
• Strength and stiffness of the combination of panel and
substructure must be enough to withstand wind load,
panel weight, and impacts as described for the project,
without damaging the façade.
• The cladding panels must not have any structural
function.
• If heavy loads are to be connected to the panels,
additional precautions should be taken.
• Before the installation of the panels, the building
contractor and/or façade company should state the wall
construction is strong, stiff, stable and flush in a durable
way. The construction always has to meet the l
ocal and/
or national legislation and guidelines as well as the
project specifications.
• Dimensions of the panels should be checked by the
façade company to ensure the panel size and fixing
method is compatible with thermal expansion and
contraction.
• Fixing panels, that have been fabricated or
thermoformed into non-planar designs, to a support
structure in different planes is not recommended.
Properly designing the support to allow free movement
of the shape in all directions is very difficult to obtain,
if the panels are fixed in more then one plane.
• The behaviour of the system in seismic zones has not
yet been evaluated.
Figure D 1 - Ventilated façade
RAIN / HUMIDITY / DEW PROTECTION
• Rain water and condensation are removed naturally by air flowing
though the cavity - so that the insulation material remains in good
condition and effective over time. Penetration of rain water is
minimized and condensation is drained out through ventilation inlets
and outlets. Th
e ventilated air space serves multiple functions.
THERMAL INSULATION - COLD
• The air in the designed cavity will circulate due to air pressure
differentials and thermal differentials over the height of the building. In
a cold climate this causes the condensation moisture at the rear of the
cladding to dry.
THERMAL INSULATION - HEAT
• In a warm climate the moving air will cool the inner layers of the
construction, thus reducing the demand for cooling energy. The
building occupants can enjoy a low-maintenance environment with dry
and comfortable conditions that can make a positive contribution to
wellness and overall comfort.
Source Eurofox
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E. SUBSTRUCTURE FOR DUPONT CORIAN PANELS
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DuPont Corian® exterior cladding panels must be
mounted on an adequate substructure with corrosion
resistant fixings in such a way that panels are not subject
to any kind of tension and can move freely.
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When engineering the substructure, the following aspects
are important:
• Wind load
• Density and maximum distances between fixing points
• Ventilation requirements
• Freedom of movement of the panel
• Size of the panels
• Thickness of the insulation material
• Anchoring to existing structural wall
• Applicable legal requirements (local building codes)
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The substructure (attachment system) usually used to
mount Corian® panels is a mechanical attachment system.
Based on an aluminium grid system, the substructure
has vertical “T” or “L” shaped profiles that are mounted
on aluminium brackets that connect to the wall. The
substructure supplier must verify that the wall substrate
is suitable for the intended substructure and that the
substrate and substructure designs follow applicable
building codes.
Cladding panels are hung on horizontal “C” shaped
profiles by the brackets (or clamps) with reverse “C” shape
that are attached to the panel with a specific connection
method (See Section F for details).
Figure E 1 - Substructure for DuPon
t Corian exterior cladding panels
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Aluminium adjustable subframe
available from various suppliers
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Concrete Wall
Insulation
Tyvek® breather
membrane
Ventilation Gap
Horizontal Profile
Corian® Panel
Adjustable Clamp
Vertical Profile
F. INVISIBLE FIXING SYSTEMS
Invisible fixing systems hide the connecting hardware on
the back of the Corian® cladding panel. These systems
hold the panels securely, supporting the weight of the
panel and providing stiffness to minimize wind deflection,
while allowing them to move to accommodate thermal
expansion and contraction.
It is important to institute a quality assurance program
to insure that the attachment method selected is properly
installed.
F.1. MECHANICAL
Mechanical fixing systems rely on an insert that rigidly
attaches a metal clamp. The clamp and the underlying
substructure are designed to allow the clamps to mo
ve
relative to the substructure to accommodate thermal
expansion and contraction.
To properly install the fastener, it is very important that
all details are precisely calculated for the project, taking
into account the length of the insert, the length of the
bolt, the thickness of the clamp and the depth of the
undercut hole.
Contact DuPont for further information on the correct
KEIL fasteners, tools, and technique required for a proper
installation.
Figure F 1 - Invisible undercut insert (KEIL)
F.1.1 Undercut anchor
An undercut anchor is a mechanical attachment in which
an insert is expanded within an undercut hole. An example
of an undercut anchor is the KEIL system. The KEIL
system uses a conical mechanical insert. When a bolt is
installed in the insert it will expand, locking itself into the
undercut of the hole. This mechanically fastens a clamp
to the panel.
KEIL Undercut Anchor
Corian® Panel
KEIL Locking Screw
Clamp
F.1.2 Squirre
l® Fixing System
The Squirrel® fixing system is a mechanical connection. A stainless steel insert is secured in the back of the Corian® panel
by adhering a machined piece of Corian® solid surface into the panel with DuPont Joint Adhesive. After sanding, a
clamp can be connected to the panel by screwing into the insert. This connection method is more labour intensive, but
may be a good alternative for smaller projects.
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Figure F 2
Hole is drilled
DuPont Joint
Adhesive applied
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Squirrel fixing
system inserted
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Result after sanding
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F.1.3 Clamp Fixing Distance
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The number of clamps and their spacing is important
to both provide sufficient support for the Corian®
external cladding and to minimize wind deflections.
Clamps should be placed no closer than 50 mm and no
farther than 150 mm from any edge of the panel. The
recommended maximum spacing between clamps is
650 mm both horizontally and vertically. These
recommendations are based on tests, performed at CST
B
(Centre Scientifique et Technique du Bâtiment - France)
for a wind load up to 1140 Pa. If the anticipated wind
load will exceed this value a tighter spacing of clamps will
be required.
Figure F 3 - Fixing distance of the clamps
Single panels
a
b
b
a
DuPont Corian® solid surface can be inconspicuously
seamed to form larger panels. The guidelines for clamp
positioning and spacing remain the same. The clamp
design and substructure must accommodate the greater
mass of the panel as well as the larger movement due to
thermal expansion and contraction. Estimates of thermal
movement should not only consider seasonal temperature
changes but also the colour of the cladding and the
location on the building. A dark colour on a south facing
exposure will reach higher temperatures than a light
colour on a northern exposure.
a
b
b
a
Often the two outer clamps on the top rail are adjustable
while the others are standard. Rows other than the top
rail use standard clamps. One standard or ad
justable
clamp is converted to a fixed clamp by drilling a hole
through the clamp and rail and fixing the clamp in place
with a bolt.
Top clamps should be fixed with 2 inserts (fixing points),
as they carry the weight of the full panel. All other clamps
can be fixed with 1 insert.
c
Figure F 4 - Glued panels with hard seams and reinforcements in the back
d
d
a
b
b
b
a
a
b
b
b
c
d
d
y
d
d
d
y
d
d
d
d
c
x
Fixing Points
d
x
Clamps
c
Fixing Points
x
Clamps
Adjustable clamp
Fixed clamp
Adjustable clamp
Standard clamp
Fixed clamp
a = 150 max / 50 min
Standard clamp
b = 650 max
a = 150 max / 50 min
c = 150 max / 50 min
b = 650 max
d = 650 max
c = 150 max / 50 min
x = panel width, 1300 max
d = 650 max
y = panel length 3658 max
x = panel width
y = panel length, limited by substructure construction
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a
Panels may be hung with the larger dimension oriented
either horizontally or vertically. Horizontally hung panels
may be eas
ier to align, but ultimately it is the architects’
decision.
It is important to work with the supplier of the support
substructure as the panel design, substructure design
and building construction must all be considered when
making design decisions.
Figure F 5 - Installation of a panel
1. The panel is positioned in front of the aluminium structure.
2. The panel is pushed against the structure.
3. The panel is pushed down, connecting the panel to the structure by the clamps.
4. The panel is aligned with other panels and lifted by the screws of adjustable clamps on the top, allowing the vertical expansion
of the panel. Finally, one of the clamps is fixed by a screw, to prevent the panel from moving along the horizontal rails.
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F.2. FLEXIBLE ADHESIVES (CHECK LOCAL
BUILDING CODE FOR SUITABILITY)
An alternative method of mounting DuPont Corian®
exterior cladding panels is the use of a flexible adhesive
to fasten the panel to the substructure. Due to variation
in local regulatio
ns and building practices this method
may not be universally acceptable. Please check local
guidelines to determine acceptability. The adhesive
selected must be able to bear the weight of the panel as
well as accommodate movement between the panel and
substructure due to differential thermal expansion. It is
recommended to work closely with adhesive suppliers to
ensure the adhesive is suitable for the project.
Figure F 6
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In a flexible adhesive mounting system, the panels are
directly adhered to vertical rails. These rails should not be
more than 600 mm apart.
Adhesive systems generally combine the use of a flexible
adhesive with double sided tape. The double sided tape
serves to:
The panel is pushed against the adhesive, but not yet in
contact with the tape. At this point the panel is already
kept more or less in place (tack phase) but can still be
moved around and aligned.
Once the panel is aligned, it’s pushed down against the
double sided tape.
Figure F 7
• Hold the pane
l in place until the adhesive is fully cured
• Prevent flexible adhesive from flowing into the joint
between the two panels.
The adhesive is applied in a triangular bead next to the
tape and should be positioned away from the gap between
the two Corian® panels.
The panel sizes that can be attached with adhesive are
limited because of the weight of the panels and the
maximum elongation of the adhesive. In general this
means that panel lengths are limited to approximately
2.5 m by the sheet width (maximum 1.5 m)
14
G. EXPANSION JOINTS & PANEL CONNECTIONS
DuPont Corian® solid surface, as any other material,
will expand or contract with temperature changes.
Therefore, expansion gaps and the fixings method should
be designed in a way that the material can move freely.
The thermal expansion coefficient of Corian® solid surface
is 39 x 10 / °C. As rule of thumb, a variation in length
and width of 3 mm/m (based on a temperature variation
highest - lowest of 80°C) should be conside
l in place until the adhesive is fully cured
• Prevent flexible adhesive from flowing into the joint
between the two panels.
The adhesive is applied in a triangular bead next to the
tape and should be positioned away from the gap between
the two Corian® panels.
The panel sizes that can be attached with adhesive are
limited because of the weight of the panels and the
maximum elongation of the adhesive. In general this
means that panel lengths are limited to approximately
2.5 m by the sheet width (maximum 1.5 m)
14
G. EXPANSION JOINTS & PANEL CONNECTIONS
DuPont Corian® solid surface, as any other material,
will expand or contract with temperature changes.
Therefore, expansion gaps and the fixings method should
be designed in a way that the material can move freely.
The thermal expansion coefficient of Corian® solid surface
is 39 x 10 / °C. As rule of thumb, a variation in length
and width of 3 mm/m (based on a temperature variation
highest - lowest of 80°C) should be conside
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