Skylight Size Calculator

FAQs

How do I know what size skylight I need? The size of the skylight you need depends on the room’s dimensions, your desired level of natural light, and aesthetic preferences. Measure the room’s floor area and consider how much light you want. Larger skylights provide more light but may require structural changes.

What are standard skylight sizes? Standard skylight sizes vary, but common rectangular sizes range from 2×4 feet to 4×8 feet. Circular skylights often have diameters of 2 to 4 feet.

What is the best shape for a skylight? Rectangular or square skylights are most common and versatile. They’re easier to install and suit various architectural styles.

How big should my VELUX be? The size of your VELUX skylight depends on factors like room size and desired illumination. VELUX offers various sizes, so choose one that balances light and aesthetics.

Do skylights add value to your home? Skylights can enhance a home’s value by improving aesthetics and natural light. However, the value added varies and depends on other factors too.

Do skylights let in more light than windows? Skylights can let in more light than vertical windows of similar size because they receive light from the top angle as well.

Does a skylight make a room look bigger? Yes, skylights can create an illusion of a larger space by extending the view upward and bringing in more light.

What is the easiest skylight to install? Fixed skylights are generally the easiest to install as they don’t require opening mechanisms.

What are the most common skylights? Fixed, ventilated, and tubular skylights are the most common types. Fixed ones don’t open, ventilated can be opened, and tubular skylights are smaller and funnel light through reflective tubes.

What is the rule of thumb for skylight? A common rule of thumb is that the skylight size should be around 5% of the floor area in well-lit rooms and up to 15% in darker areas.

Which of these is the most typical skylight problem? “Leakage” is a common skylight problem due to poor installation, aging seals, or faulty flashing.

What is the difference between a skylight and a rooflight? The terms are often used interchangeably, but “skylight” usually refers to a window in the roof, while “rooflight” is a more general term for any fenestration on a roof.

What is the minimum roof angle for VELUX? For VELUX skylights, a minimum roof pitch of 15 degrees is usually required to ensure proper water drainage.

What is the minimum space between VELUX? The minimum space between VELUX skylights depends on the specific model and size, but it’s generally recommended to have at least 16 inches of space between them.

Do I need permission to fit a VELUX? Local building codes and regulations vary, but often you’ll need a permit to install skylights, especially if you’re altering the roof structure.

Are skylights tax deductible? Skylights might qualify for energy-efficient tax credits in some regions, but it’s best to consult a tax professional for accurate information.

Do all skylights eventually leak? With proper installation and maintenance, skylights shouldn’t leak. However, poor installation or wear and tear over time can lead to leaks.

How many years do skylights last? Skylights can last anywhere from 10 to 30 years or more, depending on the quality, materials, and maintenance.

What are the disadvantages of skylight windows? Disadvantages include potential leaks, heat gain/loss, glare, and the higher cost compared to regular windows.

Do you lose a lot of heat from a skylight? Skylights can contribute to heat loss in colder months and heat gain in warmer months if not properly insulated or shaded.

What is the difference between VELUX and skylight? “VELUX” is a brand that produces various types of skylights. So, a VELUX skylight is a specific kind of skylight made by that brand.

Do skylights make a room colder? Improperly insulated skylights can contribute to heat loss, potentially making a room feel colder.

Where is the best skylight placement? Skylights are often placed on the south-facing roof for maximum sunlight. North-facing skylights provide more even, indirect light.

What is a room with skylight called? A room with a skylight can be called a “skylit room” or simply a room with a skylight.

What is the better alternative to skylights? If installing traditional skylights is impractical, tubular skylights or light tunnels can be a good alternative for bringing in natural light.

What you need to know before installing a skylight? Understand the type of skylight you want, the structural implications, proper installation techniques, potential permits, and how to maintain it.

Is it cheaper to put in a window or a skylight? Generally, installing a window is cheaper than a skylight due to the complexity of cutting into the roof and ensuring proper sealing.

Are skylights better on north or south side? South-facing skylights provide more direct sunlight and warmth, while north-facing ones offer softer, indirect light.

Which skylight is the best at resisting leakage? Quality fixed skylights with proper flashing and installation are generally better at resisting leakage compared to other types.

Do roofers fit skylights? Roofers often have the expertise to install skylights due to their experience with roofing and flashing techniques.

Why do skylights need a 15 degree pitch? A 15-degree pitch helps ensure proper water drainage and prevents water accumulation on the skylight’s surface.

What is the best slope for a skylight? The best slope depends on your location and desired light exposure. A slope between 15 to 60 degrees is common.

What are the recommended spacing distances for skylights? Spacing depends on the size and placement. Generally, allowing at least 16 inches between skylights is advisable.