Quick answer: A useful window schedule gives every opening a stable ID and records the information needed to select, price, manufacture, install and maintain it. At minimum, include dimensions, opening type, location, thermal and weather targets, acoustic or solar requirements, glass safety, finish, hardware, interfaces and the evidence or drawing revision behind each item.
A schedule is valuable when it lets the architect, engineer, supplier and installer point to the same opening and the same approved configuration.
Start with opening identity and geometry
- Opening ID, level, room, elevation and drawing reference.
- Width, height, sill level, reveal depth and finished-floor relationship.
- Fixed, casement, tilt-turn, sliding, folding, entrance or other opening type.
- Handing, swing, panel count, clear opening and access or escape requirement.
- Revision, responsible designer and approval status.
Keep the ID stable when the design changes. If a window splits into two panels or changes from fixed to operable, record the revision instead of silently overwriting the earlier requirement.
Use the same ID on plans, elevations, schedules, supplier quotations and installation checklists. Stable references make it easier to identify a changed opening, trace its evidence and prevent an old glass or hardware note from surviving into fabrication. It also makes site inspections faster and reduces uncertainty during handover.
Record performance targets with their basis
State the whole-window Uw target and keep Ug and Uf as component information. Add air, water and wind requirements with the test or calculation basis, reference size and opening configuration. If the project has acoustic goals, record the target metric and spectrum. For solar control, note the solar factor, daylight intent, shading and orientation rather than writing “low solar gain” without context.
Every number should point to a drawing, calculation, test report, declaration or approval note. If the value is still a design target, label it as a target; if it is a supplier result, identify the exact configuration that produced it.
Glass, safety and appearance
List pane arrangement, thickness or build-up where approved, interlayer, spacer, safety classification, obscuration, pattern, colour and visible-light intent. Add impact, guarding, fall-risk and human-impact requirements for the opening location. Record internal and external finish, coating or stain, colour reference, sheen and sample approval.
Do not copy a glass description from one opening to every opening unless the orientation, size, risk and performance basis are genuinely the same.
Hardware and interfaces
Include handle type and height, locks, hinges, restrictors, closers, screens, automation, access control and keying where relevant. Show the connection to structure, sill, waterproofing, insulation, plaster, cladding, flooring, fire stopping and adjacent doors. Large or heavy units need lifting, storage and protection notes so the installation team can plan the work before delivery.
Simple quality-control workflow
- Architect issues the opening list and drawing revision.
- Engineer confirms structure, energy, acoustic, safety and weather requirements.
- Supplier returns a marked-up schedule with configuration and evidence references.
- Team reviews samples, interfaces, hardware, maintenance and installation sequence.
- Approved schedule is locked for fabrication; changes receive a new revision.
- Installer records deviations and the final handover configuration.
Use the product pages to identify candidate systems, the project cases to discuss application context, and the service page to coordinate drawings and technical questions. When the schedule is ready, send it through the project enquiry form.
Evidence and scope
This checklist helps teams structure a window schedule; it is not a substitute for the project specification, local rules, engineering calculations or supplier evidence. Final values and interfaces must be reviewed for each opening and retained with the approved revision. The Construction Products Regulation provides European context for construction-product performance documentation, while the project team remains responsible for the intended use.
