Window treatments are the most visible installation deficiency at the superintendent’s first walk. Crooked blinds and non-operating roller shades are immediately apparent from across the room and create a quality impression that affects the superintendent’s evaluation of the entire floor’s finishes. Understanding the specification and installation requirements for Division 11 scope allows GCs to structure the window treatment scope in a way that produces a clean first walk rather than a punch list of alignment corrections.
Horizontal blind product grades
Horizontal blinds in multifamily construction are specified by slat width, material, and cord or cordless operation. Two-inch aluminum blinds are the production standard for multifamily residential units. The production grade aluminum blind at two-inch slat width, in standard white or off-white finish, is appropriate for Class B and workforce multifamily. Premium aluminum blinds with wider slat profiles and better head rail construction are available for Class A applications.
Cordless horizontal blinds have replaced corded blinds as the standard in residential multifamily construction because cordless operation eliminates the strangulation hazard that corded blinds create in units that may be occupied by children. Most jurisdictions and most multifamily developers now specify cordless as the standard.
Faux wood blinds provide the appearance of wood slats with better moisture resistance than real wood, making them appropriate for bathroom and kitchen window treatments in multifamily units. They are heavier than aluminum blinds and require head rail construction that can support the additional weight without deflection.
Roller shade fabric types
Roller shades are specified by fabric type, which determines the light filtering level, the privacy level, and the UV blocking capability. The three primary fabric types in multifamily roller shade specification are sheer, light-filtering, and blackout.
Sheer fabrics provide privacy while admitting diffused natural light. They are appropriate for primary living area windows where natural light is a design priority. Light-filtering fabrics reduce solar gain and glare while maintaining visible contact with the exterior environment. Blackout fabrics eliminate all light penetration and are appropriate for bedroom windows where residents require darkness for sleep.
Solar fabrics, a category within light-filtering fabrics, are rated by openness factor, the percentage of the fabric area that is open weave. A five percent openness factor fabric admits more light and provides less solar gain reduction than a one percent openness factor fabric. Confirm the openness factor specification for solar shades against the project’s solar gain goals and the resident demographic’s privacy expectations.
NFPA 701 compliance
NFPA 701 flame resistance testing is required for window treatment fabrics in all commercial occupancy spaces and in multifamily buildings classified as commercial occupancies. all 7th states Innergy serves enforce this requirement in commercial multifamily buildings. The fabric manufacturer must provide test documentation confirming NFPA 701 compliance for the specific fabric being installed.
Confirm NFPA 701 documentation before any roller shade fabric is ordered. A fabric that is installed and then fails the NFPA 701 review at the occupancy inspection must be replaced before the certificate of occupancy is issued.
Motorized shade electrical coordination
Motorized roller shades require electrical rough-in at each shade location, as described in the smart home integration article. The Division 11 sub must provide electrical rough-in specifications to the GC before the electrical crew advances on the ceilings and walls at shade locations.
How Innergy specifies Division 11
Innergy’s Division 11 submittal identifies the blind product grade and slat width, the roller shade fabric type and openness factor, NFPA 701 compliance documentation, the mounting method for each window, and for motorized shade projects the electrical rough-in specifications and the smart building platform compatibility confirmation. For Division 11 as a standalone or seven-division scope in TX, WA, OR, CO, UT, NM, or AZ , contact us and we respond within one business day.
Inside mount versus outside mount specification
The mounting method for window treatments, inside mount or outside mount, is a specification decision that affects both the appearance and the light control performance of the installed treatment.
Inside mount positions the head rail within the window frame opening. This method provides a clean, integrated appearance that emphasizes the window frame and allows the window trim to remain fully visible. Inside mount requires that the window frame have sufficient depth to accommodate the head rail and that the frame opening width accommodate the treatment width with manufacturing deductions applied.
Outside mount positions the head rail above and outside the window frame opening, with the treatment overlapping the window frame on each side. Outside mount covers more of the wall and window frame, providing better light blockage at the sides of the treatment and accommodating window openings that are too narrow or too shallow for inside mount.
Confirm the mounting method for each window type in the unit type matrix before the treatments are ordered. An inside mount measurement produces a treatment width that is narrower than the window opening. An outside mount measurement produces a treatment width that is wider than the window opening. Ordering inside mount width for an outside mount installation, or vice versa, produces treatments that cannot be installed at the specified location.
Division 11 window treatment installation that is sequenced correctly, after paint and flooring are complete, with mounting brackets confirmed level before head rails are engaged, and with motorized shade limits set at installation, produces a first-walk result where window treatments are not on the punch list at all.
Division 11 window treatment specification is more technically complex than its visual simplicity suggests. The correct fabric type, the correct mounting method, the correct NFPA 701 documentation, and the correct motorized shade control protocol must all be confirmed before any treatment is ordered. Getting one element wrong produces a replacement rather than a correction.
Innergy covers Division 11-Window Treatments for multifamily construction under a single subcontract.
Window treatment installation sequenced correctly, specified completely, and installed with pre-walk inspection discipline is a scope item that disappears from the punch list entirely on well-managed floors.