Commercial
Commercial punched-opening window systems
Aluminum window systems set into individual masonry, precast, or framed openings — supplied and installed for new construction, gut renovation, and building-wide replacement across multi-family, institutional, office, and mixed-use buildings.
Request a QuoteCommercial punched-opening window systems are thermally broken aluminum units installed one frame per individual wall opening, rather than the continuous glazing plane of curtain wall or storefront. Architects, general contractors, building engineers, and property teams specify them for multi-family, institutional, office, and mixed-use buildings, working from a window schedule that lists unit types, sizes, and quantities per elevation.
Scope
Punched openings, not glazing planes
Curtain wall and storefront carry continuous glazing across a face of the building. A punched opening is a discrete hole in a load-bearing or infill wall, and the window has to handle its own structural span, perimeter flashing, and thermal bridging at the jamb, head, and sill. That difference drives everything downstream: anchoring, sequencing with the wall trade, and how the unit is detailed against the air and water barrier.
We work from your window schedule. Give us unit types, sizes, and quantities per elevation, plus the performance criteria in the spec, and the quote comes back organized the same way.
Building types
Where these systems go
Multi-family
Repeating unit types across every elevation, with egress-compliant windows at bedrooms and phased replacement while the building stays occupied.
Institutional
Schools, healthcare, and municipal buildings where operable units, screen requirements, and limit stops all appear in the spec.
Office & mixed-use
Fixed and projected units sized to a structural grid, with glazing packages tuned to orientation and solar load.
Gut renovation
Existing openings surveyed and re-detailed for new frames, flashing, and continuity with the wall assembly.
Specification
What we need to price a schedule
- Unit types
- Fixed, casement, awning, projected, and hopper, including combinations within a single frame and any required operable-to-fixed ratio.
- Quantities by elevation
- Counts per elevation and floor, so the takeoff, sequencing, and staging plan match how the building is actually built.
- Rough opening sizes
- Nominal opening dimensions plus wall type — masonry, precast, CMU back-up, or framed infill — since anchoring differs at each.
- Thermal criteria
- Assembly U-factor and SHGC targets, condensation resistance where specified, and whether the project is on prescriptive or performance compliance.
- Air, water, structural
- AAMA/WDMA performance class and grade, design pressure, and any project-specific water-penetration test pressure.
- Finish
- Anodized or fluoropolymer painted finish, color, and whether interior and exterior finishes differ.
- Egress
- Which openings serve sleeping areas, so clear-opening width, height, and area are verified before the unit is fixed in the schedule.
- Schedule constraints
- Occupied-building phasing, hoisting and access limits, and any milestone dates driving the delivery sequence.
Partial information is fine to start. If the schedule is still in progress, send what exists and note the open items in the quote form.
Process
From schedule to installed opening
- 01
Review & takeoff
Drawings, schedule, and spec sections are reviewed against the punched-opening scope, and open items are listed back to you in writing.
- 02
Product & glazing selection
Frame depth, thermal break, operable hardware, and the insulated glass make-up are selected to meet the performance criteria rather than to hit a generic number.
- 03
Shop drawings & approval
Elevation-by-elevation shop drawings, anchoring details, and perimeter conditions issued for architect and GC review.
- 04
Field verification
Openings measured before fabrication release so out-of-tolerance conditions surface early instead of at install.
- 05
Fabrication & delivery
Units fabricated to the approved submittal and delivered in the sequence the site can actually receive.
- 06
Installation & closeout
Set, anchored, flashed, and sealed to the approved detail, with punch resolution and closeout documentation.
Window schedule
What a window schedule is, and why we ask for one
A window schedule is a table that gives every distinct window on the project a type mark — W1, W2, W3 — and records its operation type, rough opening dimensions, glazing make-up, finish, hardware, and any egress or acoustic requirement. A separate count then says how many of each mark occur on each elevation and floor. Most general contractors read these daily; a facility manager handling a first window replacement often has never seen one, and that is fine.
The schedule matters because it is the only document that turns a building into a countable scope. Without it, pricing is a guess about quantity and unit type, and the two numbers that move a window budget most are exactly those. With it, the proposal comes back organized the same way the drawings are, so a line item can be traced to a mark and an elevation.
If no schedule exists yet, we build a preliminary one during the proposal stage from elevations, photographs, and field-verified openings. It is issued back to you as part of the response, so the assumptions behind the number are visible and correctable rather than buried in a lump sum.
Scope drivers
What actually moves the scope
Unit count
Total quantity sets fabrication runs, crew loading, and delivery sequencing. Repetition of a single mark lowers cost per opening; many one-off marks raise it.
Sizes and types per elevation
Operable units cost more than fixed and carry hardware, screens, and limit stops. Large spans may need reinforcement or a mullion, which changes the frame system.
Thermal performance
The U-factor and SHGC targets decide frame depth, break design, and glass make-up. Tight numbers can push a triple-glazed or high-performance coated unit.
Historic district constraints
Older municipalities in this corridor may review sightlines, muntin pattern, profile depth, and finish color, which can restrict the unit before performance does.
Retrofit vs new construction
Retrofit adds opening survey, demolition, substrate repair, lintel and sill conditions, and interior protection. New construction works to a specified rough opening.
Access and phasing
Occupied buildings, hoisting limits, staging area, and milestone dates all affect how many openings can be turned per day and therefore the installed cost.
FAQ
Technical questions from specifiers
How is a punched-opening window system different from curtain wall or storefront?+
A punched-opening unit sits in a discrete wall opening and is anchored to that opening, so it carries its own structural span and is flashed and sealed into the surrounding air and water barrier. Curtain wall and storefront form a continuous glazing plane supported by their own framing grid, spanning past the wall rather than sitting inside it.
What performance criteria should the window schedule reference?+
AAMA/WDMA/CSA 101/I.S.2/A440 performance class and grade, design pressure derived from the project's wind loads, a water-penetration test pressure, assembly U-factor and SHGC targets, and condensation resistance where the spec calls for it. Where units serve sleeping areas, clear-opening width, height, and net area belong in the schedule as well.
Can you price a project when the window schedule is incomplete?+
Yes. Send the drawings and whatever schedule exists, and the open items come back to you in writing as part of the proposal. If no schedule exists yet, we can build a preliminary one from elevations and field-verified openings so quantities and unit types are documented before pricing is relied on.
How do retrofit openings differ from new-construction openings?+
New construction gives you a specified rough opening and a wall assembly detailed for the frame. Retrofit means surveying each existing opening for size, squareness, substrate condition, and existing anchorage, then deciding between full-frame replacement and an insert. Out-of-tolerance conditions, deteriorated sills, and lintel repair are scope items that surface in that survey, not at install.
Can the building stay occupied during a window-wide replacement?+
Typically yes, by phasing elevation by elevation and unit by unit so each opening is opened, set, flashed, and closed within a working day. Sequencing depends on access and hoisting limits, interior protection, and how many units can be staged on site at once — all of which belong in the schedule constraints you send with the request.
Related reading
How a window schedule works
A window schedule assigns a type mark to each distinct unit, then maps every opening in the building to one of those marks. It is the fabrication order, the pricing basis, and the install checklist at once.
GuidePunched opening vs curtain wall
A punched opening is an individual hole in a solid wall. Curtain wall is a continuous glazed skin hung outside the structure. They are different products with different failure modes.
GuideWhat drives aluminum window cost in NJ
Cost is driven by operating type, glazing package, opening condition, access and finish. Fixed units sit at the bottom of the range; operable, egress-sized and historic-profile units sit at the top.
Project scenarioMulti-family elevation replacement
Occupied multi-family buildings replace windows elevation by elevation so residents keep their units and the building keeps its schedule. The window count is driven by the takeoff, not an estimate.
Project scenarioOffice building thermal upgrade
A non-thermally-broken aluminum frame conducts heat straight through the metal. Replacing it changes interior surface temperature, which is what building engineers actually notice.
Send the window schedule
Choose the commercial path in the quote form and include unit types, quantities per elevation, and the performance criteria in your spec.