Rivet Method:
Rivets are used in a panel mounting application to secure
two or more components together. The rivet is easily installed with
access only required from one side of the assembly.
These systems require substructure (50x25mm rectangular aluminum
channel), 10x30 size SS screw, POP rivets etc.
1) Creation of Aluminum structure: The aluminum
substructure (standard specified) generally consists of vertical support
profiles/hollow sections are mounted on the wall using rivets/angle brackets.
Considering dimensional behavior of laminate at relative
humidity as well as effect of climatic temperature on metal sub-construction,
there is need to make fixed points & sliding points to fix the panels.
a) Fixed points: fixed points are used
for uniform distribution & shrinkage movement. The diameter of the drill
hole in Aica exterior clad must measure
5 to 6mm
b) Sliding point: The diameter of drill
hole in Aica exterior cladding must be larger than the diameter of the
fastening as per required expansion clearance. Thus is the shaft diameter of
the fastening plus 2mm for every meter of cladding material from the fixed
point. The head of the fastening must be big enough so that the hole in
exterior clads is always covered
Procedure: Make
6mm thru hole from back side & 20mm from front side on aluminum rectangular
channel for screw fixing with channel and wall. Then mark screw position on
wall with the help of rectangular channel for wall plug fixing. While plug
fixing, provide space approx. 450 to 600mm between two channels as well as
between two fasteners. Keep minimum 15mm distance of channel alignment from
floor, sides & ceiling of wall area. Fix all plugs (approx. 30mm) to the
marked area. Fix all rectangular channels on the wall with the help of 10x30mm
size screw.
2) Panel cladding: Mark the holes in the aluminum triangular
substructure as well as in laminate panel for the rivet fixing. Make the drill
in the compact laminate for Rivet fixing. While marking, keep rivet space
in-between 20-60mm distance from corner as well as maintain minimum 450 to
600mm space in-between two Rivet. Compact laminate is then fixed with Rivet
using Rivet gun on aluminum substructure. Fix the other panels in same fashion
with maintaining 3mm gap in-between two panels.
Important note: Using rivets system, the mouth piece drilling on the center
of the plate is opened with the same diameter as the rivet, other holes are
opened 2-3 mm wider than the rivet diameters, thus enabling movement of clad
panels in case of expansion. The placement of the holes should be minimum 20 mm
& maximum 60mm distance from the plate edge and distance maximum 10 times
of the material thickness
Adhesive system:
Adhesive system is simple system for rear ventilated facades
and visible roof under faces.
These systems require 50x25mm rectangular aluminum channel,
10x30 size SS screw, PU sealant, VHB structural glazing tape, PU primer black
etc.
PU sealant & VHB tape should have good quality and
resistance to UV radiation (3M?? PU 540 sealant & 3M?? VHB?? G23F are
preferable).
Process:
A) Creation of aluminum structure: Make
6mm thru hole from back side & 20mm from front side on aluminum rectangular
channel for screw fixing with channel and wall. Then mark screw position on wall
with the help of rectangular channel for wall plug fixing. While plug fixing,
provide space approx. 450 to 600mm between two channels as well as between two
fasteners. Keep minimum 15mm distance of channel alignment from floor, sides
& ceiling of wall area. Fix all plugs (approx. 30mm) to the marked area.
Fix all rectangular channels with wall with the help of 10x30mm size screw.
B) Surface
preparation and priming: Abrade (rough) both the bonding area (front side
of the channel & backside of laminate surface) using either cleaning
pad/scrubber/fine emery paper. Clean the roughed surfaces and apply black
primer (recommended) on these bonding areas and allow drying to leave a tack
free film. Kindly note, primer coating on laminate backside surface is to be
done just before bonding but before sealant application on the frame to get
better bonding results.
C) VHB & Sealant application: Paste
VHB tape & PU sealant on front side of framed aluminum channel. Always
apply VHB tape before sealant as there is skin formation on sealant bead if
exposed long in air. Apply the sealant as a triangular bead of 6-8mm base and
height approx. 10-12mmmaway from the tape.
D) Panel Cladding: Align the compact
laminate & fix the same on channel with the help of VHB channel & PU
sealant. Apply pressure with a rubber roller or by hand. Kindly ensure proper
alignment of panel before pressurized for bonding. Enough pressure should be
applied so that both surfaces fully contact the tape. Fix other compact laminate in same fashion
& maintain 3mm to 4mm gap between two compact laminate. Kindly note to
achieve maximum bonding strength, minimum 24 hours is required for optimum
curing after installation process.
Z-Clip Method:
A Z-clip system involves installing clads on the wall
structure (lip-up) and strips/clips on the back of the panel (lip down). Once
the panel is “dropped” into place, blocking at the top of the panel keeps the
compact laminate from being removed.
This system required 50x25mm rectangular aluminum channel,
Z- clip, 10x30 size SS screw, 8x6mm SS Screw etc.
Creation of aluminum
structure using Z-clip: Make 6mm thru hole from back side & 20mm from
front side on aluminum rectangular channel for screw fixing with channel and
wall. Then mark screw position on wall with the help of rectangular channel for
wall plug fixing. While plug fixing, provide space approx. 450 to 600mm between
two channels as well as between two fasteners. Keep minimum 15mm distance of
channel alignment from floor, sides & ceiling of wall area. Fix all plugs (approx.30mm)
to the marked area. Fix all rectangular channels with wall with the help of
10x30mm size screw. Fix Z-clip on rectangular channel with the help of 8x6mm SS
screw. Keep minimum 450 to 600mm space in-between two Z-clip .
Fix Z-clip on another side of exterior laminate in reverse
fashion with the help of 8x6mm size SS screw.
Then with the help of Z-clip, slide or hang laminate panel
on framed rectangular channel.
Fix all other laminate panels in same fashion with
maintaining 3mm gap in-between two compact laminate.
Important note in all
above three procedures: An efficient air circulation must be secured between
Aica exterior wall cladding and the surface or the coating of the building. The
blank grouting spaces allowed for ventilation between the plates should not be
filled with any material. An efficient air circulation must be provided from
the ground level of the plate to the top edge. A minimum of 50 cm2 space is
required for every 1 meter width. If no air ventilation gap is reserved at the
construction framework, deformation will occur on the exterior plates.