(Applicable only for India)

Expansion Clearance

The most important characteristics of FASCIA Exterior Cladding panels are that they marginally change their size in relation with the changes in relative humidity. They normally expand when they absorb moisture and marginally shrink when they lose moisture. You must provide proper clearance between the panels during fixing process to compensate for this expansion and contraction, commonly referred as the dimensional change.

You may consider this clearance as per below basic thumb rule.

Panel length = a mm
Panel width = b mm

Expansion clearance = a or b / 500

Mounting of panels with screws on aluminum sub-structure

The dimensions and size of aluminum substructure can be considered in accordance with the relevant national standards. The aluminum substructure generally consists of vertical support profiles/hollow sections which are mounted on the wall using angle brackets and rivets.

Metal sub-constructions normally change their dimensions with differences in temperature. The consideration of change in dimensions of FASCIA Exterior Cladding panels in relation with changing relative humidity is done by the concept of Expansion clearance explained above. These changes in size of sub-construction and the cladding material can also be opposite to each other. Hence while installing the panels due attention must be paid to the required expansion clearance. Due to the material properties of FASCIA Exterior Cladding panels, fixed points and sliding points need to be made to fix the panels.

Fixed points are used for uniform distribution (halving) of the expansion and the shrinkage movements. The diameter of the drill hole in FASCIA Exterior Cladding panels has to be made from 5.0 to 6.0 mm.

The diameter of drill hole in FASCIA Exterior Cladding panels must be 8 mm, drilled larger than the diameter of the fastening, depending on the required expansion clearance. This can be maintained as the shaft diameter of the fastening plus 2 mm for every meter of cladding material starting from the fixed point. The head of the fastening must be big enough so that the drill hole in Cladding panels is always covered.

The table below is depicting maximum spacing of fastening for single and double span panels.

Fastening Spacing

The rivets must be put in place with a flexible mouthpiece having clearance of 0.3 mm. The fastening is placed in such a way that the panel can move slightly. Rivets are put in place with flexible mouth-pieces. The defined clearance of the rivet head to the surface of the panel (0.3 mm) allows movement of the element in the drill hole as shown in figure. The centre point of the drill hole in the sub-construction must coincide with the centre point of the drill hole in the cladding panels. Drill with a centering piece. Screws must not be over-tightened.

The fastenings should be put in place starting from the middle of panel to outwards.

Edge Spacing

To ensure the flatness and stability of the cladding panel, ensure that the edge spacing is maintained properly. The joints must be made at least 8 mm wide so that changes in size can take place without any obstruction.Flexible mouthpiece 0.3 mm
The table below is depicting maximum spacing of fastening for single and double span panels.

Exterior Cladding

The Lap Siding Fixing Method has the advantage of being a very attractive system of panel fixing. With pre-fabricated FASCIA Exterior Cladding panels for the lap sidings, it is easy to design robust and modern facades.
the first row of mounting clips so they rest on the bar. Make sure you fit 2 mounting clips at each vertical joint between panels.



Handle FASCIA Exterior panels with care in order not to damage the edges and surfaces of the high-quality material. In spite of the excellent surface hardness and the installation protection film, the stack weight of FASCIA Exterior Cladding panel is a possible cause of damage. Therefore, any form of dirt or dust between the panels must definitely be avoided.

FASCIA Exterior Cladding panels must be secured against slippage during transport. When loading or unloading, the panels must be lifted. Do not push or pull them over the edge. Transport protection films must always be removed from both sides at the same time. The transport protection film must not be exposed to heat or direct sunshine.


All panels must be stacked horizontally on flat, stable supports and supporting panels. The goods must lie completely flat. Cover plates must always be left on the stack. The top cover should be weighted down. After removal of panels, PE films must again be closed over the stack. The same applies, in principle, for cut-panel stacks. Incorrect storage can lead to permanent deformation of the panels. FASCIA Exterior Cladding panels are to be stored in closed rooms under normal climatic conditions. Climate differences on the two surfaces of a panel are to be avoided. With pre-installed fastening elements, therefore, care is to be taken that the climatic effect is uniform on all sides. Use intermediate layers of wood or plastic.


FASCIA Exterior Cladding panels can be easily machined, like hardwood, laminated chipboard or bonded chipboard, with carbide-tipped woodworking tools. Saw with stable circular saws or hand-held circular saws for installation cutting. All well-known producers of hand-held machines (Festo, Bosch, Metabo and many more) offer guide rails. We recommend usage of carbide-tipped saw blades with (group) trapezoidal teeth FZ/TR – (Leitz) to give good cutting results. To achieve good cutting quality, feed EXTERIOR as smoothly as possible.

• Cutting rate: 50 - 60 m/sec depending on tool diameter and rpm, e.g. 4000 rpm, Ø 250 mm, 64 teeth
• Depth of cut per tooth : 0.02 - 0.04 mm
• Feed : 6 - 10 m/min depending on thickness.
• Sharp saws & optimum setting of the saw blade projection are necessary for achieving clean cut edges.
• For fitting work and chamfering on the construction site, electrical hand planes with a chamfering or a mitring groove have proven themselves.
• Use HSS twist drills for manual drilling. Drill tip ≤90°.
• When using carbide-tipped drills use pillar drilling machines - carbide metal tends to break off when drilling by hand.
• Do not allow the drill to break through the backside of the panel, or if necessary, drill against an appropriate base applying enough pressure to ensure a clean exit hole.


Stylam in co-operation with Dow Corning has designed a system for Elastic Bonding of ventilated facade panels for both interior and exterior applications.

After extensive research & testing, Dow Corning 896 PanelFix with a Tensile Strength > 1.1 Mpa, an elastic type one component neutral curing Silicone adhesive has been developed for bonding applications that require high durability and fast handling – provides instant bond strength after application and high strength adhesion once fully cured. Dow Corning after conducting detailed lab trials gas approved Stylam’s Decorative Panels for achieving excellent adhesion compatibility with its 896 PanelFix.


Thoroughly clean all surfaces of loose debris. Wipe the joint surfaces and remove dirt and contaminants. Allow the surface to dry. Stylam recommends Dow Corning R40 Universal Cleaner or R41 Cleaner Plus.

Apply a thin, uniform layer of primer by hand to the Panel surfaces where the 896 PanelFix adhesive will be applied. Stylam recommends Dow Corning Primer P.

A. Pre Fixing – Tape Application:
Once the cleaning and primer has been done and is dry, apply Dow Corning PanelFix Tape continuously and vertically on to the supporting structure. Dow Corning PanelFix Tape, which is 12mm width, 3.2mm thick in Black Color is recommended to be used for the temporary fixation of the Facade Panels during the 896 PanelFix Silicon Adhesive curing process. This will also ensure the minimum thickness of adhesive joint is achieved. Pre Fixing Tape provides instant tack and a temporary anchor that holds the Panel in position while the Silicon Adhesive 896 completely cures and reaches its final bond strength.
**Do not remove the upper protective layer from the tape until the Panels are ready for application.

B. 896 PanelFix Adhesive Application:
After tape installation, apply the adhesive on to the supporting structure and also directly to the Panel. Apply the adhesive in a continuous operation using a caulking gun, allowing a minimum of 5mm distance from the tape. Extrude the Silicone Adhesive with minimal angle between the nozzle and the surface to achieve the required joint dimensions.
**After the Silicon Adhesive application, remove the protective layer from the pre fixing tape.

C. Panel Installation:
Position the panel by gently pressing and correcting if necessary. Once in position, apply pressure to ensure that the Panel Fixing Tape is in complete contact with the inner faces of both the panel & supporting structure.

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