8.3 Lighting, Locks, Doors, Windows & Glazing

Quick Answer: Light for detection and identification, not for a single bright puddle. Match fail-safe and fail-secure hardware to egress rules. Then treat the door, frame, hinges, and glazing as one opening. Security film is a retrofit tool, not a UL 752 listing and not a forced-entry assembly by itself.

Once the vehicle line and the fence exist, most actual attacks go through openings or through darkness beside those openings. PSP Domain 2 expects you to specify lighting that supports people and cameras, locking that still respects fire code, and doors and glazing that provide real delay—not a hardware schedule that looks expensive on paper.

Lighting as a security measure

Security lighting has jobs: deterrence, detection (human and camera), safe movement, and identification at portals (faces, badges, sometimes plates). Those jobs are not the same as “make the property look busy from the highway.”

Uniformity beats a heroic footcandle under one pole. Dark pockets between fixtures are attack positions, package-drop spots, and places a patrol walks past without seeing a person crouched at the fence. Lighting practice (including IES security-lighting guidance as a named family) talks in uniformity ratios, minimums, and vertical illuminance on faces and facades—not only horizontal lux on asphalt. Do not memorize a single footcandle number as a PSP rule. Specify the task: detect a person on the fence line, identify a face at the badge reader, or read a plate in the vehicle trap. Then design the grid, mounting height, and optic to that task and to the camera.

Glare is an adversary tool. Floodlights on a roof aimed at the street can blind cameras looking the other way, bleach the night vision of a patrol walking out of a dark yard, and still leave the wall at the fixture’s feet in shadow. Full cutoff, house-side shields, correct aiming, and mounting height are security details. Light trespass onto neighbors is both a community complaint and a sign the optic is wrong.

Color and cameras travel together. Color rendering and correlated color temperature affect whether a camera and a witness can describe clothing. Very warm, very low-CRI sources (legacy low-pressure sodium is the classic example) are poor for identification. Extremely cool “blue-white” floods can look modern and still create harsh contrast and unflattering camera scenes. Match the source to the camera’s specified scene illumination, including whether the camera will use infrared after hours. Infrared-only scenes that look fine in a vendor demo can fail if the site also needs a color identification still for investigations.

Dark-adapted patrols matter on large sites. An officer leaving a dim warehouse into a wall of glare, or staring along a fence into an unshielded flood, loses the ability to see in the remaining shadows. Continuous, even, moderately bright lighting along the route usually beats theatrical contrast. Controls (photocells, time clocks, after-hours step-down) should not create timed dark windows that match the adversary’s schedule. Where dark-sky ordinances cap uplight or brightness, do not “solve” them by turning the parking lot off; solve them with better optics, lower mounting where appropriate, and vertical light where faces are.

Locks: mechanical, electrified, fail-safe, fail-secure

The lock is the last mechanical decision at an opening. Mechanical hardware includes cylinders, deadbolts, mortise and cylindrical locksets, panic devices, and padlocks. Restricted keyways, interchangeable cores, and key control are part of delay; a Grade 1 lock in a door that nobody keys properly is still a convenience lock. BHMA grades and high-security cylinder listings (such as the UL 437 family) are named quality conversations—not a substitute for the door and frame.

Electrified hardware includes electric strikes, electrified mortise or cylindrical locks, motorized latches, magnetic locks, and delayed-egress devices. Access control licenses the who and when; the hardware still has to latch, close, and fail in a predictable way.

Fail-safe means loss of power unlocks (or releases) the holding force. Magnetic locks are typically fail-safe because there is no mechanical latch to push against if the magnet stays held. Fail-secure means loss of power leaves the door locked against entry. Electric strikes on storerooms and many perimeter entries are often fail-secure so a power cut does not open the warehouse. Occupants can still leave if the egress side has listed mechanical lever or panic hardware. That pairing—fail-secure against entry, free mechanical egress from inside—is a standard life-safety arrangement. Memorize the words by behavior, not by brand.

Fire and egress codes (IBC and NFPA 101 as the usual U.S. named families) constrain this more than a security wish list. Magnetic locks on egress paths generally need listed request-to-exit sensors, a fire-alarm release, and often a readily obvious mechanical or switch release. Delayed egress is typically a short, signed delay (commonly discussed as about 15 seconds, with fire-alarm shunt) in occupancies that allow it—not a silent 60-second trap. Stair-tower reentry rules may require fail-safe unlocking of locked stairs during alarm. You will lose a design review, and you should, if you put a fail-secure maglock on the only way out “so power loss cannot admit an intruder.” Intruders are not the only people in the building when the power dies.

Doors, frames, and hinges

Delay lives in the opening assembly. Hollow-metal doors and frames are the commercial default for delay; gauge, stiffeners, and whether the frame is grouted and anchored to structure change performance. Wood doors belong in interior offices, not as the only delay on a pharmacy rear door. Aluminum storefront is a camera-friendly lobby material and a poor delay material; the lock is sitting in a weak stick system. Fiberglass-reinforced doors appear in corrosive or wash-down spaces.

Frames that clip to drywall with a few screws will spit out under a pry bar no matter what cylinder you bought. Through-bolts, grout, and anchorage into the substrate are the unglamorous details that make hardware matter. Hinges are a defeat path: removable pins on an outswing door, a missing security stud, or a standard pair of hinges on a door that should have a continuous hinge for both traffic and pry resistance. Vision lites, mail slots, and under-door gaps are openings inside the opening. Astragals, coordinators, and door loops for electrified hardware are part of the assembly, not extras.

Listings do not travel. A fire-listed door (for example UL 10C-type positive-pressure fire tests) tells you about flame and smoke, not about a determined ram or a rifle. A ballistic door listing does not make the same leaf a burglary-resistant assembly. Specify the listing that matches the threat, and do not harvest a fire label as a security rating.

Windows, glazing, and film

Glazing is where owners try to buy security in a roll.

Annealed glass cuts badly when it breaks. Tempered glass is a safety glazing that granules; it is not a delay glazing. Laminated glass (PVB or stiffer interlayers) holds together after cracking and is the usual step up for forced-entry delay, storm, and blast-fragment retention—provided the frame bite and stops are real. Polycarbonate and acrylic buy impact resistance; they scratch, they move with temperature, they have fire and smoke peculiarities, and they are not “bulletproof” because a brochure said security. Glass-clad polycarbonate sandwiches appear on higher-delay or ballistic openings.

Security film is a retrofit on existing glass. Typical architectural films in the smash-and-grab conversation are a few mils to thicker “security” grades. Attached well, they can hold shards, slow a brick, and buy seconds at a pharmacy window. They fail as a fantasy listing: floating film with no edge attachment peels; film does not fix a lockable louver, a weak frame, or a door that is the real path; film is not a UL 752 ballistic assembly; film is not a substitute for a tested forced-entry window. Named burglary-glazing families (such as UL 972) and forced-entry test families apply to assemblies. If the threat is a determined ram-raid, you are back in HVM and door design, not in film thickness.

Write the opening as a system: wall, frame, leaf or sash, hardware, glazing, and how it fails on fire alarm. That is the PSP-level specification, not a cylinder catalog and a roll of film.