Multifamily window treatment installation covers measuring, procurement, and mounting of the blinds, shades, and drapery hardware that finish every residential unit and common area on the project. It goes in last among interior finishes, which makes it easy to defer and easy to underestimate, and it carries two compliance requirements that most other finishes do not: flame resistance for fabrics in commercial and common areas, and cordless operation for every residential window covering.
Get the scope, the safety standards, and the sequence right up front and window treatments close out a floor cleanly before the superintendent’s first walk. Get them wrong and you are replacing overspray-damaged units, waiting on a re-order, or explaining to an inspector why a lobby drape has no flame-resistance documentation. This page covers what the work includes, the two standards you must specify by name, and what to require from the sub before the bid closes.
What the scope covers
Window treatments live in CSI MasterFormat under Division 12 20 00, Window Treatments, which breaks into blinds (12 21 00), drapes and curtains (12 22 00), and shades (12 24 00). Many interior finishes packages and subcontractors group the same work under Division 11 alongside the other unit-level installed products, and that is how Innergy carries window treatments within a seven-division interior finishes package. The division label matters less than the scope split: confirm in the subcontract whether the sub supplies and installs, or installs owner-furnished product, and whether common-area drapery is in or out.
A full multifamily window treatment scope includes field measurement of every finished opening, procurement to the specified fabric and hardware, mounting in each unit, motorized shade programming where specified, common-area and amenity-space treatments, and a pre-walk inspection of every blind and shade before turnover. On projects where window treatments and countertops or wire shelving share the same subcontractor, coordinate the floor-access schedule so the two installs do not collide. Innergy runs Division 12 countertops and Division 10 shelving under the same package on many jobs, which keeps that coordination internal instead of falling on the GC.
Product types you will specify
Three product families cover almost every multifamily specification. The choice follows the finish grade and the marketing target for the building.
| Product | Typical application | Notes |
|---|---|---|
| Horizontal blinds (aluminum or faux wood) | Workforce, market-rate, entry Class A units | 2-inch cordless slat blinds are the default. Faux wood is heavier and changes the lift hardware spec. |
| Roller shades (solar or blackout) | Class A units, amenity spaces | Solar fabric diffuses light and keeps outward views. Blackout goes in bedrooms. Fascia or cassette detail matters on close-inspected Class A finishes. |
| Motorized roller shades | Premium Class A units, lobbies, amenity | Battery or hardwired. Requires control-protocol and electrical coordination before procurement. |
| Drapery and curtains | Lobbies, leasing offices, common areas | Commercial-occupancy fabric requires flame-resistance documentation (see below). |
Motorized shades come in two configurations. Battery units need no electrical rough-in but need accessible battery replacement over the life of the shade. Hardwired units need a low-voltage supply at each shade location, roughed in before drywall closes. On concrete-ceiling mid-rise and high-rise construction, retrofitting that supply after the ceiling is poured costs far more than roughing it in on schedule, so the sub’s power-supply spec has to reach the electrical crew before they advance on those walls and ceilings.
Fire safety: NFPA 701 for commercial and common areas
Any fabric window treatment installed in a commercial occupancy or a common area must carry NFPA 701 flame-resistance documentation. NFPA 701, the National Fire Protection Association’s Standard Methods of Fire Tests for Flame Propagation of Textiles and Films, is the test most building officials and interior specs reference for drapery, roller-shade fabric, and other hanging textiles in lobbies, leasing offices, corridors, clubhouses, and amenity spaces. It measures how a fabric responds to flame, and the manufacturer supplies a test certificate for the specific fabric.
Confirm NFPA 701 documentation before fabric procurement, not after installation. A roller shade or drape that arrives without the certificate for a common-area application is a replacement item, because you cannot retroactively test an installed fabric to satisfy the fire marshal. Residential in-unit shades usually fall outside the NFPA 701 requirement, but the common-area fabrics almost always fall inside it, so make the certificate a submittal condition on the subcontract.
Child safety: cordless operation and ANSI/WCMA A100.1
Every operable window covering sold for residential use in the United States must meet the cordless or inaccessible-cord requirements of ANSI/WCMA A100.1, the American National Standard for Safety of Corded Window Coverings published by the Window Covering Manufacturers Association. The standard was revised to make cordless operation the default for stock products in residential settings, which is why cordless lift is standard on multifamily unit blinds and shades across the industry.
In practice this means corded lift is not an acceptable specification for residential units. Cordless lift is standard, and wand tilt is acceptable on horizontal blinds. Motorized operation also satisfies the requirement because there is no accessible operating cord. When you review the sub’s product data, confirm every residential window covering is specified cordless or motorized. A sub who submits a corded product for a residential unit either does not know the standard or is quoting old stock, and both are reasons to push back before the order goes in.
Measuring and mounting
Measure each opening after drywall and paint are complete, then order the same day. Measuring before paint risks an inaccurate dimension when drywall or trim thickness varies slightly, and measuring late pushes procurement and installation back. The right rhythm is to measure a floor the day paint is confirmed complete and place the order immediately, so fabrication and delivery finish before the floor is ready to install.
Mounting is either inside-mount, set within the window jamb for a clean recessed look, or outside-mount, fixed to the wall or trim above the opening. The spec and the depth of the jamb drive the choice. Brackets have to hit solid backing, hardware finish has to match the unit’s finish package, and every blind and shade needs to sit level. Crooked brackets and misaligned fabric are the most common punch items on this scope, which is why a pre-walk inspection of every unit belongs in the process rather than the superintendent’s callback list.
Installation sequence
Window treatments install after paint and after flooring are both complete on the floor. The sequence is a hard requirement, not a preference:
- After paint. Paint overspray on installed blinds and shades does not clean off in the field. The affected units need new product, and that cost lands on someone. Confirm paint is complete and fully dry, not just surface-dry, before the crew mobilizes to a floor.
- After flooring. Flooring installation, LVP especially, moves crews and material through the units in ways that damage hanging product. Sequencing behind flooring removes the second damage vector.
- Before the superintendent’s first walk. Despite installing last, window treatments have to be done before turnover so the walk is a single pass. A sub who cannot move through a floor quickly once paint and flooring clear forces a second walk and costs schedule.
- After conditioning, in cold months. Motorized shades carry electronic components with operating-temperature minimums. On winter installs, confirm the building’s HVAC is running and the space is at operating temperature before you program motors.
What to require from the sub
Before the bid closes, confirm the window treatment sub can answer these:
- Measurement timing. They measure the day paint is confirmed complete and order the same day, not on a schedule convenient to them.
- Cordless and NFPA 701 compliance. Every residential covering is cordless or motorized per ANSI/WCMA A100.1, and common-area fabrics carry NFPA 701 certificates confirmed before procurement.
- Motorized experience. For motorized projects, they have installed the specified brand and control protocol before, and they confirm compatibility with the building’s smart-building platform (Z-Wave, Zigbee, Wi-Fi, Lutron, Crestron, Savant, or proprietary RF) before ordering.
- Electrical coordination. They deliver hardwired-shade power-supply specs to the GC before the electrical crew advances on the relevant walls and ceilings.
- Damage replacement process. They document a factory-damaged or install-damaged unit, place the replacement order immediately, and report the timeline to the superintendent, rather than “handling it when it comes up.”
Regional notes for the western states we serve
The sequencing and safety requirements hold across multifamily projects in every western market, from Texas and Arizona to the Pacific Northwest. A few regional factors change the specification:
- High-altitude UV. New Mexico markets at 5,300 to 7,000 feet and other high-elevation sites push more ultraviolet energy through south and west-facing windows than sea-level markets. Specify UV-rated fabrics and UV-stable hardware finishes for those exposures, or chrome and nickel cassettes fade faster than they should.
- Cold-month conditioning. Colorado and Utah winter installs need the building conditioned before motorized-shade programming, since the electronics have a minimum operating temperature.
- Class A protocol matching. Denver, Salt Lake City, and other markets competing on smart-building features increasingly pair motorized shades with smart lighting on one platform. Confirm the shade and lighting controls are specified compatible before either system is procured.
Innergy installs window treatments as a standalone Division 11 scope or inside a full seven-division interior finishes package for multifamily and commercial construction across the western states. We measure the day paint clears, install behind both paint and flooring, confirm NFPA 701 and cordless compliance before procurement, and inspect every unit before the walk.
Ready to scope window treatments on your next multifamily project? Contact us and we respond within one business day.
Common questions
What division are window treatments in? CSI MasterFormat places window treatments in Division 12 20 00 (blinds in 12 21 00, drapes in 12 22 00, shades in 12 24 00). Many interior finishes packages and subcontractors group the same work under Division 11 with the other installed unit products, which is how Innergy carries it in a seven-division package.
Do multifamily window treatments have to be cordless? Yes for residential units. ANSI/WCMA A100.1, the American National Standard for Safety of Corded Window Coverings, makes cordless or inaccessible-cord operation the default for residential window coverings. Cordless lift is standard, wand tilt is acceptable on horizontal blinds, and motorized operation also complies.
When do window treatments install in the schedule? After paint and after flooring are both complete on the floor, and before the superintendent’s turnover walk. Installing before paint causes overspray damage, and installing before flooring exposes the product to flooring-crew traffic.
What fire rating do window treatment fabrics need? Fabrics in commercial occupancies and common areas need NFPA 701 flame-resistance documentation, the National Fire Protection Association’s standard for flame propagation of textiles. Confirm the certificate for the specific fabric before procurement, since you cannot test an installed fabric after the fact.
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