Skylights and Roofing: Adding Natural Light to Your Space

A skylight can change how a room feels, but the choice involves more than the opening’s size. Consider orientation, glare, glazing, roof integration and whether a fixed or venting product actually suits the room.

The Advantages of Skylights

Skylights are a popular choice for homeowners looking to brighten up their interior spaces. Here’s why you should consider adding skylights to your roofing project:

1. Abundant Natural Light

A skylight can introduce useful daylight. Assess orientation, glare, shading and the room’s lighting needs alongside glazing performance; the annual energy balance also includes heat loss and gain.⁠^[1]

2. Daylight and room comfort

Consider the room’s daylight, glare and comfort goals. Those are practical design questions, not a promise of improved health or productivity from a particular opening.

3. Energy Efficiency

Compare U-factor, SHGC, climate, orientation and shading. A skylight can lose or gain heat, and only a venting product provides that opening function; net energy savings are not automatic.⁠^[1]

4. Aesthetic Appeal

Skylights can add a unique design element to your home’s interior and exterior. They come in various shapes and sizes, allowing you to customize the look to suit your style.

Skylight Placement and Design

To make the most of skylights, consider the following factors:

1. Roof Orientation

Choose useful daylight for the room, not maximum sunlight as a goal by itself. Orientation, glazing, shading and seasonal light can affect glare and heat gain as well as brightness.⁠^[1]

2. Roof Pitch

The pitch of your roof can affect the angle and direction of sunlight. Proper placement and design can optimize the amount of light without causing glare.

3. Ventilation Options

A fixed skylight does not open. An operable/venting model can provide an opening, with controls depending on the product. That distinction is separate from whether a room's required ventilation and overall comfort needs are met.⁠^[2]

4. Energy-Efficient Glazing

U-factor describes heat transfer through the glazing product; lower means less heat flows through under the rating conditions. SHGC describes solar heat gain, while visible transmittance concerns daylight. Compare them for the room and climate rather than treating the lowest number in every column as universally best.⁠^[1]

Specify more than the opening

Compare orientation, glazing performance, glare, shading and the fixed or venting design. Ask how the opening and flashing integrate with the particular roof.⁠^[1]

• Check structural and roof-slope suitability.
• Review actual U-factor and SHGC for the product and climate.
• Clarify specialist work, maintenance access and written coverage.