Commercial window replacement begins with the existing assembly rather than a nominal opening size. The project may retain frames, remove complete units or combine new frames with replacement glass. Commercial Windows Group reviews plans, surveys and materials lists for the proposed supply package. Keep the replacement strategy and existing-condition evidence attached to each opening group so the quotation describes the intended work.
Define the package
Identify complete assembly replacement, retained-frame work and IGU-only replacement separately. Record existing frame depth, visible drainage, perimeter conditions and interior returns. Photographs should identify the opening mark and location. Document which conditions are verified and which will only become visible after removal.
Review the systems and interfaces
Review the proposed window against the existing wall and the required performance. Frame profile, glass appearance, operability and perimeter dimensions can change the interface. A replacement that fits the apparent width and height may still need different anchoring, sill or trim details. Keep those issues visible to the responsible installer and design team.
Resolve the project-specific risks
Existing buildings often contain several generations of replacements. Survey similar-looking openings before assigning one condition to the whole facade. Distinguish field dimensions from plan dimensions, and avoid assuming that an original drawing describes the current assembly. Record possible access, hazardous-material and concealed-condition constraints for the appropriate project review.
Coordinate review and release
Use a survey, selection review, representative detail, dimension confirmation and release sequence. If the project requires a sample opening or mockup, reconcile its findings before repeating the package. Track changes to opening counts and configuration as access becomes available; do not let inaccessible units disappear from the procurement record.
Plan receiving and handling
Coordinate delivery with available work areas, occupied access and protected storage. Packaging by elevation, floor or work run can reduce searching through repeated material. Review the route for large units and identify who receives and inspects the shipment. Retain packing references and approved records for later service.
Compare the complete scope
Compare proposals using the same retain-or-remove assumptions, dimensions, glass, finish and accessories. Clarify disposal, field measurement, installation and perimeter repair responsibilities separately from the supplied product. A unit rate without those assumptions can hide a different replacement strategy and make a building-wide comparison unreliable.
Information to include with your request
For commercial window replacement packages, keep these records identifiable in the current package:
Retain-or-remove strategy.
Existing opening survey.
Frame and perimeter photographs.
Confirmed dimension basis.
Occupied access restrictions.
Replacement and installation scope split.
Label preliminary records and name the current revision. Include the supporting detail or photograph when a field describes an exception, so the reviewer can connect the written note to the correct opening group.
Establish the dimension basis
Keep the measurement convention visible for every opening group. A rough opening, finished frame size and daylight glass dimension describe different things. Record width, height, quantity, unit of measure and the source of the dimension. Fractional dimensions should remain readable in the schedule rather than being rounded for convenience. Where existing conditions are involved, identify which sizes are surveyed and which are inferred from drawings.
The responsible project parties should confirm the final manufacturing basis before release. If a perimeter allowance, retained frame or surrounding finish affects the size, preserve that condition with the opening mark. A change in the wall detail should trigger a review of the affected dimensions rather than a quiet adjustment to an isolated line item.
Keep glass and performance attached to the assembly
Identify the required glass makeup, thickness, coating, tint and heat treatment where specified. Distinguish a complete glazed window from a glass-only or IGU-only request. Appearance decisions and performance requirements should be connected to the actual frame, glass, size, operation and installation condition being reviewed. A general product-family description does not establish that every configuration has the same tested performance.
Provide the project’s structural, air, water, thermal, safety, acoustic or other criteria as applicable, together with the relevant specification or design notes. Identify required technical documents and sample approvals. If information is incomplete, label the assumption for review; do not convert an unanswered requirement into a claimed approval. The responsible design and technical review should resolve the proposed assembly before it is accepted for the project.
Make the written quote comparable
A useful comparison retains the opening marks, current quantities, selected system, operation, glass, finish, hardware and requested accessories. Record packaging, freight and documentation assumptions beside the materials scope. Identify base selections and alternates separately, with the affected opening groups clearly named. An alternate price is useful only when the reviewer can tell what changes.
State who is responsible for field verification, engineering, installation, removal, unloading and surrounding wall work. These responsibilities should be expressly addressed in the written scope rather than inferred from a product title. When a proposal changes, keep its revision and the corresponding schedule together. This gives the purchasing team a clear basis for comparing the complete supplied package and identifying any work that still needs a separate decision.
Submit plans or a materials list
For a takeoff request, upload the current architectural plans, elevations, opening schedule and relevant specifications. Include the project location, building or phase reference and the work being requested. Identify superseded sheets and open decisions. A clear set of current records is more useful than several unlabeled versions of the same drawing.
For materials-list pricing, provide an opening mark, quantity, dimensions and measurement basis, proposed system or operation, glass, finish and project requirements for each group. Attach supporting photographs or details when they explain an existing condition or a special interface. Include delivery location and receiving constraints. Commercial Windows Group reviews the submitted scope for pricing; final availability, configuration, documentation and commercial terms are established in the written quote rather than assumed from the upload itself.
Keep the accepted record after release
Retain the approved opening schedule, drawings, glass and finish selections, accepted quote and delivery references together. Name the revision used for release. If a later change is requested, identify the affected marks and obtain a revised written record before treating it as part of the accepted package.
At receiving, use the packing references to reconcile the delivered material with the schedule and follow the stated inspection and reporting procedures. Keep product identification and technical records available for future service. Those records help a later glass replacement or hardware inquiry start from the supplied assembly instead of relying on a photograph of a similar-looking opening.
Can replacement windows be priced from old drawings?
Old drawings can start review, but identify what has been verified in the existing building. Later alterations and replacement variations can change the required assembly.
Can only the glass be replaced?
Separate IGU-only requests from complete window replacement and provide the retained assembly information and required glass makeup for review.
Does supply pricing include removal?
Check the written scope. Removal, installation, field verification and surrounding repairs should not be assumed to be included with materials.
Send your project for pricing
Upload current plans for a takeoff, or send an organized materials list for commercial windows, glass and IGUs. Include the project location and any pending decisions with the request.