Composite and fibre-cement cladding is sold as a system rather than a raw material, and the specific system and how it's detailed at corners and openings has more effect on final cost than most homeowners expect.
Here's what to look for when quotes for what seems like the same wall come in at noticeably different prices.
System and board type
Different manufacturers' systems vary in board thickness, factory finish quality and fixing method, and these differences carry through to both material cost and expected lifespan — a cheaper system isn't automatically a false economy, but it should be named in the quote so you can check it, not left generic.
Trim and corner detail count
Every external and internal corner, every window and door reveal, and every junction with another material needs a proprietary trim or a site-formed detail, and the number of these on a given elevation has a real effect on labour time.
A simple rectangular elevation with few openings costs noticeably less per square metre to clad than one with multiple windows, corners and roof junctions, even using identical boards.
Substrate preparation
The wall behind the cladding needs to be sound, with any existing render or previous cladding removed and the structure checked, and a breather membrane and batten cavity installed correctly — this preparation work is often underestimated in cheap quotes that assume the existing wall needs nothing.
Access
As with any exterior wall finish, height and site access determine scaffold requirements, and this can be a significant share of the total cost on a two-storey elevation or a site with restricted access for materials delivery.
Reading a quote and spotting what's been cut
A proper quote names the specific cladding system and board specification, lists trim and corner details, and separates substrate preparation and access as their own line items.
A cheaper competing quote has usually assumed the existing substrate needs no preparation without checking it, used generic rather than manufacturer-approved trims at corners, or left cut edges unsealed to save the small extra time that capping takes — all of which shorten the system's working life without showing up on day one.
Common questions
Does the number of windows on a wall really change the cladding cost much?+
Yes — every opening needs a reveal detail and trim, and the labour for cutting and fitting boards around openings adds up more than most homeowners expect compared with a plain wall.
Is it worth paying more for a named manufacturer system over a generic one?+
Named systems come with tested trims and warranties that generic combinations of board and trim don't, and mixing components from different sources can void any manufacturer cover — it's worth checking what's actually being specified.
What's the most common corner cut on a cheap composite cladding quote?+
Leaving cut board edges unsealed or uncapped, and using generic rather than system-matched trims at corners — both save a small amount of time on the day but show up as discolouration and joint problems within a few years.
Get an itemised composite cladding quote
System, trims, substrate work and access all listed separately, so nothing is hidden in a single lump sum.