The renovation QC checklist to run before you sign off

It's a staged set of checks that confirm work is specified and built correctly at each point — before production, during install, on wet-area and M&E details, and at handover. The aim is to catch problems at the stage where they're cheapest to fix, ideally on paper before anything is cut or fabricated.

Yes — it's written so a homeowner can hold a contractor accountable stage by stage. The hard part is having one approved scope that every trade signs to, and knowing the material logic, especially that 'moisture-resistant' board is not waterproof in a wet zone. Where coordination across trades gets heavy, that's the layer ELS runs.

Because the most common Sarawak defect is the right-looking cabinet built in the wrong material for its moisture zone. We choose by moisture zone, not budget: dry runs can use moisture-resistant board — a substrate rating, which is a separate axis from the E0/E1/ENF emission grade and is still not waterproofing — while wet-kitchen bases, vanities and laundry zones need ACP or honeycomb aluminium. Under a kitchen sink, protected P6 is allowed only with ALUMAX's listed protections and where ALUMAX's site measurement finds P6 suitable.

Before production. The drawing-approval stage is where a fix costs a fraction of what it costs after fabrication or install. Starting QC only at handover means you're inspecting decisions that were locked in weeks earlier, when changing them is expensive or impossible.

ELS is the risk-control, specification and coordination layer — a different service from an interior design firm. ALUMAX supplies the products, with installation carried out by the appointed service team; ELS plans scope, specifies materials, lighting and M&E, coordinates the trades' information to one approved scope, recommends the order of the work and checks the hand-offs set in the commissioned scope. The checklist is the operational side of that role.

Carcass material (ACP or honeycomb aluminium, not unprotected moisture-resistant board; protected P6 under a kitchen sink only with ALUMAX's listed protections and where ALUMAX's site measurement finds P6 suitable), pressure-tested plumbing before anything is boxed in, continuous sealant at sink, hob and backsplash, floor falls toward the drain, and earthed electrical points clear of water. In flood-prone homes we also check the base detail so one flood doesn't ruin the whole run.

The approved drawings and final scope, the material and hardware spec list, confirmed appliance and sink models, the M&E layout, any contract terms on defects and warranty, and a camera to photo-log every snag. Note which areas are wet zones or flood-prone so those get the right level of scrutiny.

No. QC verifies that approved work was built correctly and produces a documented snag list — that's leverage, not a legal substitute. You still want a written contract and warranty with each party that supplies or installs. The QC record makes those documents far easier to enforce.