1. We recommend hardwood cladding to be coated
all four sides with a quality oil based finish like Cutek CD50.
Pre-oiling available at Everist Timber.
2. Check that walls are straight and plumb.
3. Make sure there is adequate drainage provisions
in place to allow for any moisture inside cavity to
4. Install a vapour permeable membrane.*
5. Install battens over the vapour permeable membrane
no more than 450mm apart. Minimum
gap between cladding and paper
of 20mm is the preferred method of
6. Install flashings where necessary.*
7. Install internal and external corners. Traditional
timber corners or modern aluminium
profiles can be used. Timber and aluminium
corners must be sealed with an external silicone
and a foam tape.*
8. Horizontal Starter Board – If running your cladding
horizontally make sure the tongue side is facing
up. Create a starter board by ripping off the tongue
from the cladding and screwing to the bottom of
your wall. This will allow for a concealed fix finish
as per image below.
9. Vertical Starter Board – Rip off the tongue from
the cladding and screw up to external stop making
sure that the screw will be concealed by the next
board as per image below.
11. Mark out the board increments on the battens to
ensure that the expansion gap is allowed for and
to prevent progressive error and lines going out of
12. Start installing cladding from the starter board.
Using a countersink drill bit, pre drill a hole for
the screw to avoid the tongue splitting. This hole
must be in the concealed fixing area to prevent the
screw head from becoming visible with the natural
movement of the cladding As per image 1.
Face fixing is another recommended fixing method,
where two counter sunk self drilling screws are applied
to the face of every board at each 450mm batten simular to
fixing decking. Pre-drilling any end joins to prevent splitting.
See image 2.
13. Move up or across the wall making sure everything
is level. Screw the tongue off at every batten until
you reach the top or end of the wall. Making sure
you have a watertight finish.
1. Make sure that any end grain or ripped edges are
sealed with the same product used to protect the
2. All end matched joins need to be sealed with a high
quality exterior sealant like Sika Pro or 11FC. If excess
sealant is visible after installation wait until it is dry before
cutting off with a chisel or knife making sure not to scratch the
* VAPOUR PERMEABLE MEMBRANE
Inclusion of vapour permeable membranes into the
building structure allows water vapour to pass through
the structure whilst preventing the entry of wind driven
rain (liquid water) from the outside environment both
during and after construction. When positioned against
the outside of the building frame as a wall wrap, these
membranes reduce the risk of condensation forming
inside the home and building structure.
A vapour permeable membrane such as Watergate
protective wrap range with a vapour permeability of no less
than 2.0ug/N.s and a water barrier classification of HIGH
must be installed to ensure the performance of your
cladding system. Watergate protective wrap product must
be installed as per manufacturers recommendations.
Position the vapour permeable membrane on the
external side of the building frame, with the cladding
spaced no less than 20mm from the membrane
to allow a drying and drainage path for moisture,
Watergate protective wrap membrane high water hold
out allows condensate to safely drain away from the
building without bleeding back through the membrane
as condensate. These membranes provide superior
permeability over perforated traditional ‘breather’ foils
and meet the AS4200.1 Water Barrier “High” water holdout
requirement for lightweight construction materials
such as Australian hardwood timber claddings.
*FLASHINGS – AS PER NORMAL BUILDING
Flashings at corners, doors, windows and wall
intersections must be installed to prevent water from
entering the cavity
Hardwood cladding should finish no closer than 150mm
from the ground, or a flashing should be installed to
prevent any water take up from the ground.
*STUDS OR BATTENS
Fixing hardwood cladding to any wall or batten should
have fixings at no more than 450mm centres. There
must be a gap of 20mm behind the cladding to make
sure any moisture can escape. All walls should be
straight and plumb.
Traditional timber 32x32 internal and 57x32 external
stops can be used. Please see drawings for installation
process. As a stylish alternative to traditional stops,
there is an Aluminium range, available in natural
anodised clear and anodised black, both of which are
available fthrough Everist Timber.