One of the most common concerns Toronto homeowners raise when considering a skylight is noise — specifically, the fear that rain drumming on the overhead glass will be disruptively loud, or that traffic and urban noise will penetrate more easily through a skylight than through an insulated wall. While these concerns were valid with older, single-pane skylight designs, modern noise reducing skylight technology has advanced dramatically. Today’s VELUX skylights incorporate sophisticated glass engineering, frame insulation, and design features that deliver acoustic performance comparable to or better than standard wall windows — transforming the skylight from a potential noise liability into a premium building component that provides natural light without sacrificing acoustic comfort.
How Skylight Glass Reduces Noise
Dual-Pane Insulated Glass Units
Every current-generation VELUX skylight features a dual-pane insulated glass unit (IGU) — two sheets of tempered glass separated by an airspace filled with argon gas. This construction provides noise reduction through three mechanisms: the mass of two glass panes absorbs sound energy, the argon-filled airspace decouples the outer pane from the inner pane so that vibrations in the exterior glass are not transmitted directly to the interior glass, and the sealed unit eliminates the air gaps and cracks that allow noise to bypass the glass entirely. The result is an STC (Sound Transmission Class) rating of 28 to 33 for standard VELUX skylights — meaning the glass reduces noise by 28 to 33 decibels, which is sufficient to make normal rainfall virtually inaudible from inside the room.
Rain Noise: The Facts vs the Fear
| Rain Intensity | Noise on Single-Pane Skylight | Noise on Modern VELUX Dual-Pane | Comparable Indoor Sound |
|---|---|---|---|
| Light rain / drizzle | Noticeable tapping | Barely audible | Quieter than a refrigerator hum |
| Moderate rain | Steady drumming | Soft ambient patter | Similar to a white noise machine |
| Heavy rain / storm | Loud drumming | Audible but not disruptive | Similar to a dishwasher running |
| Hail | Very loud impact noise | Noticeable impact sound | Brief, intermittent — tempered glass resists damage |
Many homeowners — particularly those with bedroom skylights — report that they actually enjoy the soft sound of rain on their skylight, finding it soothing and sleep-promoting rather than disruptive. The dual-pane construction transforms the harsh drumming of rain on a single pane into a gentle, diffused ambient sound that most people find pleasant.
Laminated Glass Option for Maximum Sound Reduction
For installations where maximum noise reduction is critical — bedrooms, home offices, music studios, or homes on busy streets — VELUX offers skylights with laminated glass. Laminated glass consists of two glass sheets bonded together with a PVB (polyvinyl butyral) interlayer — the same technology used in automotive windshields. This interlayer acts as a vibration damper that significantly reduces sound transmission, particularly in the mid-frequency range where human hearing is most sensitive. A VELUX skylight with laminated inner pane achieves STC ratings of 33 to 38 — providing approximately 5 to 8 additional decibels of noise reduction compared to standard tempered glass. Those additional decibels represent a perceived noise reduction of approximately 30 to 50 percent.
Blocking External Urban Noise
For Toronto homeowners near busy roads, highways, flight paths, or construction zones, the concern extends beyond rain noise to general environmental noise transmission. Modern VELUX skylights address this through the same dual-pane and laminated glass technologies, but the installation details are equally important for maximum noise blocking.
- Proper sealing and insulation: The frame-to-roof junction must be fully sealed and insulated with no air gaps — sound travels readily through even small openings. Toronto Skylight Installers uses expanding foam insulation and acoustic sealant at all frame junctions
- Light shaft insulation: The light shaft walls between roof and ceiling should be insulated with fibreglass or mineral wool batt insulation, which absorbs airborne sound energy travelling through the shaft cavity
- Closed skylight position: Venting skylights provide maximum noise reduction when fully closed and locked. The compression gaskets create an airtight seal that blocks airborne noise. When open for ventilation, noise transmission increases as with any open window
Noise Performance by Skylight Type
| VELUX Model | Glass Type | STC Rating | Best For |
|---|---|---|---|
| FS Fixed Skylight | Standard dual-pane | 28-30 | Rooms where noise is not a primary concern |
| VS/VSS/VSE Venting (closed) | Standard dual-pane | 28-33 | General residential use — good noise performance |
| Any model with laminated glass | Laminated inner pane | 33-38 | Bedrooms, home offices, noise-sensitive applications |
| Sun Tunnel | Dome + diffuser | 35-40 | Excellent noise isolation — no direct glass-to-room path |
Sun tunnels are the quietest skylight option. Because the rooftop dome is separated from the interior diffuser by several feet of reflective tube, there is no direct acoustic path from the exterior to the interior. Rain hitting the small rooftop dome is virtually inaudible inside the room — making sun tunnels an ideal choice for bedrooms and nurseries in noise-sensitive applications.
Comparing Skylight Noise to Wall Window Noise
A useful reference point: a standard dual-pane VELUX skylight has noise reduction performance comparable to or slightly better than a standard dual-pane wall window of equivalent quality. If you are comfortable with the noise level from your existing wall windows, you will likely find a modern VELUX skylight equally quiet or quieter. The difference is that rain noise is more noticeable on a skylight than a wall window simply because rain hits horizontal surfaces more directly than vertical surfaces — but the dual-pane construction reduces this to a pleasant ambient level rather than a disruptive drumming.
Additional Sound Management with Blinds
VELUX room-darkening blinds and light-filtering shades provide a secondary layer of noise absorption. The fabric surface absorbs a portion of the sound energy that passes through the glass, further reducing perceived noise levels in the room below. While blinds alone provide modest noise reduction (approximately 2-4 dB), the combination of dual-pane glass plus closed blinds creates a noticeably quieter environment than glass alone — particularly effective for bedroom skylights during nighttime rainfall.
Are skylights noisy when it rains?
What is the quietest type of skylight?
Can I get a noise-reducing skylight for my bedroom?
Do skylights block traffic noise?
Does hail damage skylights?
Quiet Skylights for Your Toronto Home — Call Toronto Skylight Installers
Modern skylight technology has solved the noise problem. Whether you want a quiet bedroom skylight, a home office above a busy street, or simply reassurance that rain will not be disruptive, Toronto Skylight Installers provides expert guidance on glass selection and installation techniques that deliver premium acoustic performance.
Call us today at (416) 365-7557 or book your free skylight consultation online.
Toronto Skylight Installers is the GTA’s certified VELUX skylight dealer, providing professional skylight installation, replacement, and repair services across Toronto and the Greater Toronto Area.
