Cladding introduction class presentation. CPCCCA3017 - Install exterior cladding

1. Cladding

2. Why do we have it?
• Cladding is the lining on the exterior of
a structure.
• It keeps moisture out of a structure.
• It helps to keep the internal of the
structure a constant and comfortable
temperature
• It protects other building components.

3. What is it?
• Typically made up of four layers:
• Thermal and vapour barrier
(permeable or impermeable)
• Cavity (battens)
• Cladding material (boards or
panels)
• Flashings

4. Thermal and vapour
barrier
• This is the layer closest to the frame of the
structure
• It stops water or humid air entering a wall
frame cavity and creating an environment for
mould (moist).
• It slows down the movement of air, less air
movement = less heating/cooling.
• It can be permeable (moisture can get
through) or impermeable (only air can get
through. This is outlined by the builder and
depends on the typical climate of the region.
• It is sometimes called sarking or wall wrap.

5. Cavity
• The cavity allows air movement between the
cladding and the vapour barrier.
• This allows any moisture that is in the cavity to
dry.
• It also acts as a thermal break between the
cladding and the vapour barrier, since they don’t
touch its harder for the cladding to heat up or
cool down the vapour barrier.
• The cavity is created by battens, usually made of
steel, timber, or fibre cement.
• Care taken installing battens to make sure the
wall is straight and in plane will speed up the
cladding installation later.

6. Cladding
• Stops harsh weather from degrading the
vapour barrier and protects it from anything
that could rip or tear it.
• Gives a much better aesthetic to the structure.
• It can be boards or panels, there is no real
definition but boards are typically much longer
than they are wide, while panels are more
rectangular.
• They are fixed to battens and finished neatly
and weatherproofed.
• Cladding can be installed horizontally or
vertically.

7. Flashings
• Flashings are small aprons and covers
that weatherproof intersections of
cladding.
• They direct moisture down and away
from the structure.
• They are usually found around doors
and windows, joins in cladding and at
the corners of structures.
• They extend from behind the vapour
barrier to the outside of the cladding,
this means they must be properly
sealed around.