Painted timber weatherboards
Showing results 1-12 of 15
Painted timber weatherboards – paint chalking
-
Weathering, UV light exposure – chalking will be more visible with darker colours
Painted timber weatherboards – faded paint finish
-
Weathering, UV light exposure – darker colours are more prone to fading
Painted timber weatherboards – peeling or flaking paint
-
Thermal expansion and contraction of timber substrates
-
Loss of adhesion due to excess moisture in substrate
-
Poor initial substrate preparation
-
Oil-based (alkyd) paint applied over water-based (acrylic) paint
-
Surface was damp or dirty when painted previously
-
Dark colours
-
Timber swelling/shrinkage caused by moisture absorption into timber end grain if joints were not adequately primed before installation
-
Paint coating is not thick enough on sharp board corners
Painted timber weatherboards – bubbling or blistering of paint
-
Loss of adhesion due to excess moisture in substrate
-
Poor initial substrate preparation
-
Oil-based (alkyd) paint applied over water-based (latex) paint
-
Surface was damp or dirty when painted previously
-
Dark colours increasing surface temperatures
-
Timber swelling/shrinkage caused by moisture absorption into timber end grain if joints were not adequately primed before installation
-
Water-based paint coat exposed to moisture before paint has fully dried
Painted timber weatherboards – paint failure at base of walls
-
Cladding covered by soil/foliage
-
The back surface of boards is too close to the ground, not sealed and absorbing moisture
-
Concrete has been placed up to and against cladding
-
There are high sub-floor moisture levels behind the cladding
-
The bottom of the cladding is too close to a waterproof deck surface, apron flashing and absorbing moisture
Timber weatherboards – joints opening
-
Thermal expansion and contraction of timber
-
Timber swelling/shrinkage caused by moisture absorption into end grain if joints were not adequately primed before installation and painting or staining
Paint failure at joints and external corners of timber weatherboards
-
Moisture getting into the timber end grain
-
The cut ends of boards were not primed or sealed before installation
-
The timber has shrunk after installing causing joints to open
Cupping of timber weatherboards
-
Thermal expansion and contraction of timber
-
Swelling/shrinkage due to moisture absorption
-
Insufficient gap left between rusticated or rebated weatherboards during installation
Rot in timber weatherboards
-
Timber is or has been continuously damp
-
Timber was inadequately treated – radiata pine must be treated to H3.1 if painted and H3.2 if installed unpainted or stained
-
Non-durable or untreated timber was used – timbers such as cedar and heart macrocarpa may be untreated but they must not be continuously wet in use
-
Paint coating has failed
Rot at base of timber weatherboard walls
-
Boards are covered by soil or foliage
-
Boards have had concrete poured against them or are touching the ground
-
Boards were not primed and painted along the bottom edge
Timber weatherboards too close to or in ground contact
-
Weatherboards were originally installed too close to the ground
-
Gardens have been built up
-
Path or paving has been laid against the cladding
Leaking through timber weatherboard cladding
-
Split or cupped boards
-
Plugs missing in rusticated weatherboards
-
Scribers missing in bevel-back weatherboards
-
Joints opening due to deteriorated paint finish, particularly at mitred corners
-
Poor corner detailing
-
No cap or saddle flashings at junctions of parapet and balcony walls
-
Minimal jamb flange cover of aluminium windows
-
Junctions with other claddings and/or roof poorly detailed/constructed