The main selling point of composite cladding is that the board face doesn't age visibly the way timber does, and for the most part that holds true over the system's working life.
Where it does show its age is at the joints and trims — the parts of the installation that depend on correct detailing at the time of fitting rather than on the board material itself.
How it behaves over 10 to 20 years
The factory-applied colour coating on most composite and fibre-cement boards holds up well against UV fading for a long period, so a wall clad ten years ago typically looks close to its original colour if it's been washed down periodically.
Where boards were cut on site and the cut edges weren't sealed properly, those edges are usually the first visible sign of ageing — a slightly different texture or colour developing along the cut line well before the rest of the board shows any change.
The low-maintenance regime that still matters
Washing the cladding down annually removes the grime and algae build-up that dulls the colour over time — it's a low-effort task but skipping it entirely does show.
Checking trims and expansion joints for movement or gaps opening up is worth doing at the same time, since these are the parts of the system most likely to need attention.
Keeping the drainage path behind the boards clear of debris at the base of the wall prevents moisture building up where it can't escape.
Early warning signs
Discolouration concentrated along a cut edge or at a corner trim, rather than spread evenly across a board, points to a sealing or capping detail that wasn't done properly at installation.
Boards that have visibly bowed or cracked at a joint usually indicate expansion gaps that weren't left wide enough, forcing the boards against each other as they move with temperature.
Water staining below a horizontal joint or trim is a sign that the lap or drainage detail at that junction isn't shedding water the way it should.
Repair versus replace
Because these systems are designed around discrete boards, a damaged or failing board is normally replaced individually rather than repaired — there's no equivalent to sanding out a defect the way you would with a natural material.
Where the problem is a widespread detailing fault, such as expansion gaps left too tight across a whole elevation, replacing individual boards without correcting the gap will just see the replacements fail the same way in time.
Given the coating and board itself rarely fail on their own, most composite cladding jobs that need attention after a decade or more are junction and trim repairs rather than a wholesale recladding.
Common questions
Why has my composite cladding discoloured only at the cut edges?+
The factory colour coating typically doesn't extend into a cut face, so if the edges weren't sealed or capped at installation, they weather differently to the rest of the board. It's a detailing issue rather than a fault with the material.
Do expansion gaps need checking over time?+
Yes, particularly after extreme summer or winter temperatures — gaps that have closed up or opened unevenly can indicate a movement problem that's worth addressing before it causes cracking.
Can composite cladding be pressure washed?+
Some systems tolerate gentle washing, but high-pressure washing can damage the surface coating or force water behind boards at joints — check the manufacturer's guidance for your specific product first.
Get your cladding checked over
We'll inspect boards, trims and joints and tell you plainly what, if anything, needs doing.