KENYA · GUIDE 0424 · EDITION 4.2
Window frame fabrication in Kenya: Operations and Quality Checks
Deliver the agreed result consistently
Confirm opening sizes, glazing arrangements and window operation before frame fabrication, coordinating appropriate glazing expertise rather than treating every frame as an interchangeable metal rectangle.
The operating sequence for this offer is:
- Record the opening and glazing interface with the glazier, including opening sections, hardware and installation measurements before preparing a drawing.
- Approve material and corrosion-protection specifications; use fabrication jigs and record dimensional checks before handing the frame to glazing specialists.
- Inspect frame fit and finish against the approved drawing, then document which party is responsible for glazing and weatherproofing.
Put acceptance into the job record
Frames match the approved measurements and glazing interface.
Review the fitted frame's operation and the agreed glazing interface, checking drainage details with competent installers and documenting finish defects before completion signoff with the buyer.
Inspect at the point where a correction is still possible, then again at handover. Record rejected or incomplete output separately from accepted output. A completed task is not automatically an accepted task, and an invoice does not establish that the customer received the right result.
Measure real capacity
Time preparation, the main operation, transport, cleaning, approvals and correction as applicable. The slowest stage determines how much you can promise. Where two orders need the same person, space or equipment at the same time, resolve the conflict before confirming both deadlines. An additional enquiry should not erase a commitment already made.
| Operating checkpoint | Evidence for this business |
|---|---|
| Before starting | Confirm opening sizes, glazing arrangements and window operation before frame fabrication, coordinating appropriate glazing expertise rather than treating every frame as an interchangeable metal rectangle. |
| During delivery | Approve material and corrosion-protection specifications; use fabrication jigs and record dimensional checks before handing the frame to glazing specialists. |
| At acceptance | Review the fitted frame's operation and the agreed glazing interface, checking drainage details with competent installers and documenting finish defects before completion signoff with the buyer. |
| At the pilot review | Record opening geometry, approved sections, glazing decisions and installation adjustments, then compare workshop dimensions with fitted results before producing repeated window frames for a larger order. |
Keep a correction and escalation rule
When inputs, access, specifications or customer instructions change, pause the affected work and confirm the effect on time and cost. Do not quietly lower the acceptance standard to avoid a delayed delivery. Keep rework caused by your error distinct from a customer-requested change of scope and agree the remedy clearly.
A frame fits the opening but leaves no workable arrangement for the specified glazing, delaying handover because the fabricator and glazier never reviewed the same drawing.
Retain the minimum records needed to investigate a complaint without disclosing unrelated personal information. Use measured delivery and actual acceptance as the basis for expanding capacity, rather than the maximum theoretical output of a tool or production line.
Operating control points for this exact offer
| Sequence | Work method | Release checkpoint |
|---|---|---|
| 1 | Measure each opening, diagonals, reveal and support separately and confirm sash direction. | Two nominally equal openings are not assumed identical. |
| 2 | Agree a competent frame/glazing detail showing drainage, rebate, hardware and installation. | Glass thickness and clearances are selected by the glazier, not guessed from frame size. |
| 3 | Prepare design-specified steel and fabricate square checked frames with controlled joints. | Inspect welds and geometry before coating makes defects harder to see. |
| 4 | Apply compatible finish and transport without loading unsupported corners. | Drainage features remain open and hardware moves normally. |
| 5 | Installer/glazier complete their specified work and check sash operation, seals and agreed water-management details. | Do not claim a frame-only supply certifies the glazing or building. |
Do not substitute a tick for an observation: record the count, measurement, approved sample or evidence reference used at each checkpoint. Mark unresolved work as held and identify who can approve the recheck.
Diagnose a failure before repeating it
| Observed symptom to investigate | Check the cause | Proposed response |
|---|---|---|
| Sash binds at one corner | Inspect diagonals, hinge alignment and site distortion. | Correct through fabricator/installer before glazing load is accepted. |
| Water collects in frame | Check approved drainage path and blocked details. | Competently restore the intended path; do not seal every opening. |
| Glass rebate does not match order | Compare drawing and glazier specification. | Stop glazing and correct the compatible design. |
These are diagnostic prompts, not proof of the cause in a real incident. Separate suspect output, record any correction and repeat the relevant acceptance check. Link rejected units, rework time, replacement materials, customer credits and collection delays to the actual job result.