IMPORTANT: The cut dimension should finish in the pan or valley equally at both jambs.
DO NOT position the jamb(s) on the ridge in the cladding.
The window width is designed to fit in the pan or valley of the sheet. Select the window position by marking the centre dimension of the window on the wall. Mark out the cut out dimensions
10mm larger than the ordered window size. Check the opening is square by checking diagonal
measurements. (for example – a 790x1505 window requires a cut out opening of 800x1515mm.)
Remove any sharp edges or burrs with metal file or a grinder.
Provide a 5 x 5 mm bead of silicone all the way around the exterior face of the window fin, approximately in the centre of the fin. Smear silicone accross the join in the fins to seal these joins. Smear sealand across the joins at the junction of the window head and jamb extrusion. Repeat at the joins of the jambs to the sill.
IMPORTANT: There are two small notches in the jamb extrusion at the join of the head and jamb extrusions. These notches allow water to drain from the head to the jamb and MUST NOT BE FILLED WITH SILICONE. If silicone enters this notch, remove it with a tool such as a small blade or screwdriver or knife before the silicone dries.
Open the sliding sash in the window to assist with the installation. Place the winodw in the opening from inside the building.
Screw your first self drilling screw externally through the cladding into the window find, along the window head hold the window in place.
NOTE:- This screw will need to be removed if a structural support is provided along the window head. This screw is then
reinstalled when the support is fixed.
* Check the window for square by measuring the diagonals. When both dimensions are equal, the window is square and ready to be firmly fixed. See diagram
* Provide internally, structural members (or our window stiffener) to the jambs (minimum) and preferably all around the
window frame. Then place all the remaining self drilling screws around the window perimeter. These screws should be
10 mm away from the cut opening to align centrally with the window fin.
To complete the sealing we recommend to run a full bead of silicone vertically down each jamb externally to seal
the junction of the jamb to the wall cladding. Particular attention must be given to seal the junction of the jamb to
the head and sill as shown in the photographs below.
If you are using “Corro®” cladding profiles and it runs vertically, you will need to
cut the bead to the head and sill beads only. If the cladding runs horizontally,
then the jamb beads only need to be trimmed. These beads can be trimmed with
hacksaw or tin snips. This trimming is only required when installing to “Corro®” profiles.
NOTE!! IF YOU ARE USING A 28MM PROFILE CLADDING (TRIMDECK® & MONOCLAD®).
The trim beads along the head and sill require removal of part of the trim bead.
DO NOT REMOVE THIS FROM THE JAMB TRIM BEADS.
There is a small “V” in the shorter leg of the trim bead which allows this metal to be
easily removed. Removal of this is necessary to allow the trim bead to rest against the ridges
in these cladding sheets.
To remove this, simply start one end using pliers, wriggle pliers vertically to start a tear,
then begin to rotate the pliers and the metal will tear away at the “vee”. Continue
rotating the pliers removing the metal along the entire length of the bead.
NOTE:- THIS PROCESS IS NOT REQUIRED WHEN INSTALLING
TO “CORRO®”, “MULTICLAD®” AND “KPANEL®” PROFILES.
The head and sill beads are longer than the head and sill dimesions
Align the sill bead first making it equidstant past the edge of the window jambs on both ends. Guide the longer leg of the bead between the locating leg on the fin and the external of the framing. Push firmly, beginning at one end, until a “snap”
sound is heard. This is the positive engagement of the trim bead locking into position
and it resting on the external face of the window frame. If the trim bead is resting against
the window frame, it is correctly installed.
Next install the two vertical jamb trim beads.
Before installing the jamb trim bead, the junction
between the sill trim bead and the external face of
the cladding needs to be sealed with silicone.
(Refer to photo.)
Check the alignment of the beads and if they are not correctly aligned, they can be “tapped” left or right using a rubber mallet
or clenched fist – tap until correct alignment is achieved.
