We do not run the production line. We hold it to your specification.
Most buyers see two moments of their order: the quote at the start, and the container at the end. Everything between them — the 25–30 days when the windows are actually being built — is invisible from 8,000 kilometres away.
That gap is not an accident. It is the easiest place in a supply chain to change something quietly, and the hardest place for a buyer to check. A profile that measures 1.6 mm instead of 2.0 mm looks identical in a photograph. A drainage hole that was never drilled looks identical to one that was. A corner that was crimped but never injected holds together right up until it does not.
We are not on that line. We do not cut, machine, crimp or glaze anything, and we do not sell windows or doors. We define what the line has to meet, then we go and measure whether it did.
What we check while the units are being built
Cutting and profiles
- What it costs you when it goes wrong
- The whole order. Wall thickness, alloy and the thermal break are set before the first cut, and none of them can be corrected later. A series re-extruded at a thinner wall is the most common way a quote gets cheaper after the order is placed.
- What we check
- Wall thickness measured on the actual profile, not read off a datasheet. The thermal break identified by material — polyamide 66 with 25% glass fibre, not PVC, which is cheaper, weaker and degrades in UV. Cut lengths and squareness. The first three pieces of each profile measured before the run continues.
- What we do about it
- Out of tolerance, the run stops and the material is quarantined. Any substitution goes to you in writing for approval — a sample photograph is not approval.
- What you get
- A measurement sheet with gauge identification, photographs of the section end, and a signed first-article record.
Machining and drainage
- What it costs you when it goes wrong
- A call-back on site, in a finished wall. A frame that leaks is almost never a gasket failure. Water has to be given somewhere to go — through correctly placed drainage and pressure-equalisation holes, past the thermal break, and out. Miss them and water sits inside the frame until it finds your plasterboard.
- What we check
- Drainage and pressure-equalisation holes present, correctly positioned and clear of the thermal break. Weep paths not blocked by gaskets or sealant. Hardware holes matching the hardware template rather than the operator’s eye. Burrs removed, so moving parts do not chew through their own seals.
- What we do about it
- Holes missing, blocked or punched through the thermal break stop the batch until they are re-machined and re-checked.
- What you get
- Photographs by opening type, with hole positions recorded against the approved drawing revision.
Corner crimping and injection
- What it costs you when it goes wrong
- Corners that open under wind load, or sashes that rub because the frame is not square. Every market tests a window at a defined pressure and deflection limit — a corner with a hollow injection bead does not pass twice.
- What we check
- Crimping pressure and the number of crimps per corner. Injected compound actually filling the corner cavity and cured — cut a sample where the process is unproven. Diagonal measurements both ways, per unit. Gap uniformity around the sash.
- What we do about it
- A hollow or short corner is re-crimped or scrapped. It does not ship with a note.
- What you get
- Diagonal measurements logged against each unit ID, and the corner test result for the series.
Gaskets and seals
- What it costs you when it goes wrong
- Air and water performance that passes on day one and fails after two summers. Gasket material is invisible, and it is one of the first things substituted.
- What we check
- The compound, not the colour — EPDM or silicone where specified, not a soft PVC substitute. Hardness. Full-perimeter seating with no lifted sections. Corner joints welded or correctly moulded. Compression set, because a gasket that takes a permanent set stops sealing.
- What we do about it
- Lifted, mis-jointed or wrong-compound gaskets are replaced before glazing; a substitution needs your written approval.
- What you get
- The gasket material certificate for the series, and photographs at corners and at the sill.
Glazing
- What it costs you when it goes wrong
- Units that fog from the inside, glass that cracks at a setting block, or a build-up quietly downgraded from 6-12-6 to 5-9-5 with a cheaper spacer. All three are found by the person standing in front of the window — usually your customer.
- What we check
- The insulated glass unit measured rather than described: glass thicknesses, cavity, spacer type, evidence of gas fill, desiccant properly filled. Setting blocks and glazing gaskets positioned to the approved glazing detail, so the glass is not bearing on the frame. Where the specification calls for it, the tempered mark plus a heat-soak certificate.
- What we do about it
- A build-up that does not match the locked specification is rejected at the factory — it cannot be corrected once the beads are on.
- What you get
- The glass label and unit certification photographed against the opening ID, and the glazing photographed before the beads go on.
What this is, and what it is not
None of the above is a guarantee. Factories make mistakes, and we do not promise zero defects — the only honest promise is that a defect gets found while it is still in the factory, where it costs a phone call instead of a crew on site.
Every finding in our reports carries its basis and its original photographs, so you or a third party can check the work instead of taking our word for it.