Skylights are a perfect way to bring natural light into the darker rooms of your home. In general, a skylight will bring in five times as much light as a regular window of the same size. This is because a skylight fitted to your roof will face the sky directly, as opposed to a regular window which is on a vertical surface and receives significantly less direct light.


However you should be aware that a skylight may create a thermal bridge in an otherwise well insulated roof and ceiling unless it is designed for optimal thermal performance. Therefore, understanding the “thermal performance” or “U-Value” of your skylight is a critical factor when comparing which unit is best for your home. Not all skylights are manufactured for the harsh Australian climate and not all skylights are the same.

The U-Value is measured like a golf score – the lower the better – with 10 being poor thermal performance and 0 being extremely good.



For example, a standard single-glazed aluminum window used in 90% of Australian-built homes has a U-Value of 6 or 7 (not good thermal performance).




On the other hand, our Keylite and INFINITI Natural Lighting Products are designed to complement the high-performance insulation materials used when building your home. Keylite boast the lowest U-Value of any off the shelf skylight on the Australian market today. Keylite glazing has a U-Value of 1.0, while the flat roof system INFINITI has glazing that boasts a U-Value of 1.5. Both these systems will complement your roof & ceiling insulation materials.





If you stand under a poorly-designed skylight in summer, you’ll feel the heat it generates. This means your air conditioning is working overtime to keep your house at a comfortable temperature. The reverse is also true in winter, as the heat in your home will dissipate out of an inefficient skylight.





Having a thermally-efficient skylight installed in your roof will help maintain a comfortable temperature and also save you dollars in the long term.


Learn more about the other amazing features of our thermally-efficient skylights by downloading the Keylite and INFINITI brochure.


The post Explaining the Skylight U-Value appeared first on Natural Lighting Products.


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Title: Explaining the Skylight U-Value
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Frequently Asked Questions

What is the difference of a skylight versus a rooflight?

Skylights and roof light are both used to let natural light in a building. However, there are slight differences.

Roof lights are windows that are built into the roof structure. They typically make up a large portion of the roof. The roof light is often combined with insulation that is watertight and windproof.

Skylights are usually built from an inner platform that can be accessed via an access ladder or staircase. They tend to be smaller than roof lighting, taking up a fraction of the overall opening. To protect against extreme weather conditions, skylights can also be fitted with protective material like polycarbonate sheets.

Skylights can bring in more sunlight, while roof lights are better at controlling the amount of sun entering the space. Skylights are more likely to absorb heat than other types of lighting because they can’t be properly insulated.

Skylights can be added to existing structures without affecting the structure. This allows people to have the freedom to add them after the main building has been completed. Roof lights need to be added at the same moment as other roofs. They require more upfront planning and will cost more when installed.

What is the light output of a tubular Skylight?

A tubular skylight can add natural light to any space. This skylight allows sunlight to enter the home through its roofs and can spread light throughout multiple rooms. How much light can a tubular skylight provide?

A tubular skylight can let light into your home at up to half the cost of traditional flat-glass skylights. A single tubular light bulb can provide 10 times more light depending on the size and brand. This is due to the use of highly reflective materials which direct sunlight into living spaces below.

You should look for models with Energy Star ratings when choosing these models. These models have met stringent environmental protection agency requirements regarding energy efficiency and quality. Many brands come with remote controllers, which allow you to adjust your lighting settings at any moment. This is perfect for those dark winter days or long summer evenings.

When it comes to bringing natural light into your home, tubular skylights are more efficient than traditional flat glass models. Not only are you able to introduce bright daylight levels into multiple rooms but features such as remote controllers add extra flexibility and control over how much or little light you want in the space at any one time. However, it is important to comply with all local regulations before you proceed!

Is a solar tube capable of heating a room?

Also known as sun tunnels or solar tubes, these tubes are reflective and have a dome-shaped roof. They capture sunlight from the outside and channel it into the living area. The interior diffuser evenly distributes this light. Solar tubes are more efficient than traditional windows and can capture natural daylight effectively, decreasing the need to use electric lighting throughout your house.

While the sun shining through a tube will not heat the air in a room directly, the radiation can heat other objects within the space if it is pointed towards them. A solar tube focused on an outdoor wall could potentially make that side of the house significantly hotter due to the amount of sun they can pull in. Sunlight directed at furniture or fabric can make those items surprisingly warm either directly under their beam or after it’s been reflected off walls or flat surfaces nearby. If multiple sunlight sources, like a window or tube, are combined in one area, the temp can rise further because multiple rays are converging at once.

Solar tubes won’t usually save you money on heating costs, but they can make your home more comfortable in cooler climates. When properly installed, solar tubes require very little energy to operate their fan and vent systems. Their low-maintenance design also allows them to last for decades before needing replacement parts so there’s no need to worry about expensive repairs either! It’s not about saving money, it’s about creating long-lasting comfort indoors.

Solar tubes appear to be natural light.

Solar tubes can bring natural light into buildings without the need to make holes in the roof. Many people wonder if solar light from these tubes is as natural looking as sunlight.

The simple answer is “yes” – solar tubes provide a realistic and natural way to increase light in commercial and residential areas. The tube’s reflective tunnels allow natural sunlight to shine through the tube and into the home or workplace. It provides just enough illumination without making the space too dark.

The color rendering index (CRI), of solar tube lights, is close to natural sunlight. It also has a higher quality than traditional lighting sources such as fluorescent, incandescent and LED bulbs. This results in a warm and attractive light. Plus, because they use diffusing lenses along with multiple reflective surfaces, solar tubes also create an even distribution of brightness throughout the room to ensure that all areas are illuminated uniformly.

These solar tubes are extremely efficient and fully automated and can be placed on any type of flat or pitched roof. Because they are glare-free, these tubes can be used indoors in any environment and still provide adequate illumination. Global users of solar tubes report that they find them to be soothing, refreshing and cleaner than other forms.

How can solar tubes and skylights differ?

Both skylights or solar tubes can provide a great deal of light to interior spaces. However, there are key differences.

Because the solar tube captures sunlight from outside, and then transports it inside using mirrors, brightening dark areas is possible without electricity. A solar tube can easily be mounted almost anywhere, even in places where a skylight would not work.

Skylights, on the other hand are larger than solar tubes and can capture more sunlight. Skylights can be fitted with blinds or screens and offer similar views to windows. Skylights are becoming increasingly popular for their aesthetic appeal. However professional installation is required because of the large size of skylights as well as the complexity and details involved in rooftop flashing to prevent leaks.

The best option depends on your needs. Skylights are more expensive than solar tubes but offer a stunning view from the largest source of natural sunlight. However, they require less paperwork and installation fees. If you’re looking for an efficient, cost-effective lighting solution that doesn’t require much paperwork, then a solar tube may be a better choice.

What to look for when shopping for a tubular skylight?

The need should be considered before shopping for a tubular Skylight. A tubular Skylight is not suitable in all rooms and lighting types. It is better suited for small rooms or areas where diffuse, ambient lighting is required, as opposed to task lighting.

The next factor to consider when shopping for a tubular skylight is size. Tubular skylights come in a range of sizes from 7″ in diameter up to 24″ in diameter and are generally about 28-36 inches long. The size of the tubular skylight that you need should be chosen based on your needs and the space available.

Another consideration should be made when choosing a tubular rooflight. An experienced professional is required to install this type of skylight in order for it to provide proper insulation and prevent leakage.

The buyers should also consider cost versus performance when deciding which type of tubular skylight to buy. You might want a longer tunnel with greater performance. It might be necessary to use more expensive materials, such as diffusers and more energy-efficient coatings on collector tubes or glass lens dome. This will result in higher system costs including installation.

Finally, depending on individual preference and needs, one can opt for plain white or colorful tube options available with some models or just customized design with manual selective color filters added during the installation process giving homeowners a wide variety of choices while still achieving desired performance results based on their specific requirements such as maximum daylight levels or sun power harvesting through solar cells incorporated into tubing systems directly connected to battery charging stations inside homes utilizing leading edge technology harnessing clean renewable energy from sun rays every day like never before!


  • Installing and flashing the window itself will cost $200 to $300 for homes with asphalt shingles, and 20 to 30 percent more for metal or tile roofing. (
  • The estimated maximum width of the tube is 370 m for S = 6.9 MPa, d = 60 m, ρ = 2500 kg/m3, and g = 1.62 m/s2 [after Oberbeck et al., 1969 ], a value that exceeds the MHH diameter and is less than the width of Rille A (∼500 m). (
  • Skylight sizes begin small, such as a 12 x 12-inch square, and can be as large as 15 percent of the room’s square footage. (
  • However, including all the expenses, skylight installations can cost you a good 600$ to 2500$. You can choose the skylight particulars according to your project specifications and budget constraints. (
  • Skylights let 30% more natural light in as compared to conventional wall windows. (

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How To

Let’s get technical: How to measure, choose, and install the right skylight for your home

Skylights are an opening in a wall or roof that allows natural light into the house. These skylights are often designed for architectural or aesthetic purposes. They let natural light penetrate indoors and can be used to add a unique touch to any home.

It is important to measure the space you intend to install a skylight before making any purchase. They come in different sizes and shapes. This helps to avoid costly mistakes and save money when you’re looking for the perfect skylight for your home.

You should also consider where your skylight will be located and what the outside environment is like (weather, trees, etc.). Consider how much privacy and light you need. Consider how much sun will pass through the skylight, as well as the durability of materials such a fiberglass or copper. You can then choose something that suits you best!

A skylight installation, whether by an experienced contractor or DIY, involves a few key steps. These include determining the best material for your project; identifying air-tightness requirements; uncovering insulation need; measuring for grid pattern; cutting multiple angles using power saws; nesting more shingles around edges; filling frames with new caulking; and removing any caulk that has been damaged.

It may seem daunting but you can do it with the right information.

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