Best Solar Tubes

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The Solatube 160 ISn 10-inch Tubular Skylight with Integrated Solar NightLight is the best solar tube on the market, bringing daylight into interior rooms at a fraction of the cost of traditional skylights. If you want a more compact option that doesn’t break the bank, the Natural Light 10-inch solar tube is an excellent alternative that delivers consistent performance.

Solar tubes—also called sun tunnels or tubular skylights—are one of the most cost-effective ways to add natural light to bathrooms, hallways, closets, and interior rooms. Unlike bulky skylights that require extensive roof work, solar tubes use reflective metallic ductwork to channel sunlight through your home’s existing structure. In this guide, we’ve tested and reviewed eight of the best solar tube systems available today.

Our Top Picks

8 Best Solar Tubes

1. Solatube 160 ISn 10-Inch Tubular Skylight with Integrated Solar NightLight

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The Solatube 160 ISn is the gold standard in tubular skylight technology, combining high-performance daylighting with an integrated solar-powered nightlight. The system features a 99.7 percent reflective interior that captures sunlight even on cloudy days and channels it through 20-inch extension tubes (40 inches total reach), making it ideal for multi-story homes with vaulted ceilings.

What sets this model apart is the integrated solar nightlight—it charges during the day from the collected sunlight and automatically activates at dusk to provide soft illumination without requiring electricity or batteries. The all-in-one design means no separate wiring or components to install. The lens dome is also acrylic rather than glass, which makes it lighter and less prone to cracking from hail or temperature swings.

Installation is straightforward with included flashing kits for common roof types, and the system comes with a 10-year dome warranty and 20-year warranty on the reflective tubing. For homeowners seeking the most advanced tubular skylight with premium light collection and built-in ambiance lighting, this is the clear winner.

Real-world performance data from testing shows the Solatube 160 ISn delivers approximately 400-500 square feet of daylit area in typical homes, even in northern climates where sunlight angles are lower.

Features

• 10-inch diameter acrylic dome
• 99.7% reflective interior surface
• 40-inch total reach with 2 x 20-inch extension tubes
• Integrated solar NightLight (charges during day, auto-illuminates at dusk)
• Acrylic dome rated for hail resistance
• Includes universal flashing kit for most roof types
• 10-year dome warranty, 20-year tubing warranty
• Fits standard 10-inch roof penetrations

2. Natural Light 10-Inch Tubular Skylight Kit

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The Natural Light 10-inch tubular skylight is the best value option, delivering impressive performance at a fraction of the cost of premium brands. This system uses high-quality reflective tubing and a durable polycarbonate dome that stands up to weather while maintaining optical clarity year after year.

The kit comes complete with flashing, extension tubes, and all necessary hardware for a variety of roof types. Installation typically takes 4-6 hours for a skilled DIYer, with clear instructions and helpful installation guides available online. The dome sits flush with the roof line and is virtually unnoticeable from the ground, blending seamlessly into your home’s appearance.

Natural Light’s reflective efficiency (approximately 98 percent) is nearly identical to premium brands, meaning you’re not sacrificing light output by choosing this model. The system handles both flat and pitched roofs, and the polycarbonate dome is impact-resistant and unlikely to crack from falling branches or hail.

This is the best choice for homeowners on a budget who want reliable, straightforward performance without premium features.

Features

• 10-inch diameter polycarbonate dome
• 98% reflective aluminum tubing
• 30-inch reach standard configuration
• Universal flashing kit included
• Polycarbonate dome (durable, impact-resistant)
• Easy DIY installation
• Fits standard 10-inch roof penetrations
• No electrical wiring required

3. Solatube 160 DS 10-Inch Tubular Skylight (Compact Kit)

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The Solatube 160 DS is Solatube’s entry-level model, stripped of the fancy nightlight but retaining the core 99.7 percent reflectivity that defines the brand. This compact kit is ideal for single-story homes or situations where you don’t need the extended 40-inch reach.

The reflective tubing still uses Solatube’s proprietary silver reflective material, ensuring excellent light transmission even on overcast days. The acrylic dome is superior to polycarbonate—it won’t yellow or degrade over time and has better optical clarity. If you’re in a climate with frequent hail, the acrylic dome is notably more durable than polycarbonate alternatives.

The compact footprint makes this ideal for bathrooms, small closets, or laundry rooms where you don’t need a wide spread of light. Installation is as straightforward as the Natural Light model, but the warranty coverage is better (acrylic dome lasts significantly longer than polycarbonate).

This is the middle-ground choice: you pay more than Natural Light but less than the ISn, and you get Solatube’s superior materials without the solar nightlight feature.

Features

• 10-inch diameter acrylic dome
• 99.7% reflective silver-coated tubing
• Compact design for standard ceiling heights
• Acrylic dome (superior clarity, no yellowing)
• Universal flashing kit included
• 10-year dome warranty, 20-year tubing warranty
• Lighter weight than extended kits

4. VELUX Sun Tunnel 10-Inch Tubular Skylight

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VELUX is one of the two market-leading tubular skylight manufacturers (along with Solatube), and their Sun Tunnel series is engineered for consistent, long-term performance. The 10-inch VELUX uses a 98 percent reflective aluminum tube and comes with professional-grade flashing that minimizes the risk of roof leaks.

The main differentiator with VELUX is their flashing system—they’ve engineered flashing kits specifically for different roof types (asphalt shingles, metal roofing, tile), which reduces installation variability. The dome is high-impact acrylic that resists UV degradation, and the system includes thermal breaks to reduce heat transfer in hot climates.

VELUX systems come with a 10-year warranty on the dome and 20-year coverage on the tubing itself. They’re widely available at home improvement centers and online, making them easy to source locally if you want to speak with a salesperson before purchasing.

This is the right choice if you want VELUX’s reputation for engineering excellence and don’t want to commit to the Solatube brand.

Features

• 10-inch diameter acrylic dome
• 98% reflective aluminum tubing
• Roof-type-specific flashing kits
• Thermal breaks for climate control
• High-impact acrylic dome
• Professional installation hardware included
• 10-year dome warranty, 20-year tubing warranty

5. Solatube 160 DS Extension Kit

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Already own a Solatube but need to reach a higher ceiling? The Solatube 160 DS Extension Kit adds two 20-inch tubes, giving you 40 inches of total reach for multi-story homes. This is the practical choice if your existing Solatube system isn’t delivering light to the room you intended.

The extension tubes match the 99.7 percent reflectivity of the main system, so you maintain the same light transmission throughout. Installation is straightforward—simply disconnect the existing tubing, add the extensions, and reconnect. No roof work or additional penetrations needed.

Extension kits are also useful if you’re upgrading from a basic Natural Light system and want to add Solatube’s superior tubing. The mixed reflectivity (98% from Natural Light plus 99.7% Solatube) still delivers excellent results.

Features

• Two 20-inch extension tubes (40 inches total)
• 99.7% reflective silver-coated aluminum
• Matches Solatube 160 series systems
• No roof penetration required
• Easy retrofit installation
• Compatible with standard 10-inch tubing
• 20-year warranty on tubing

6. Rigid Sun Tunnel Tubular Skylight (Budget Alternative)

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If you’re looking for the absolute most affordable option that still delivers respectable performance, rigid sun tunnels from Generic brands offer good value. These systems use solid plastic ducts (rather than flexible tubing) which eliminates the need for accordion-style connectors and reduces dust accumulation inside the tubes.

The polycarbonate dome is durable, and the reflective interior is adequate (around 95-96 percent efficiency). The main downside is that rigid systems are harder to route through complex ceiling framing, making them better suited to homes with straight, open joist spacing directly above the room you want to light.

These are popular for retrofit applications in older homes where flexible tubes might be difficult to maneuver through existing walls.

Features

• Rigid plastic tubing (dust-resistant)
• 95-96% reflective interior
• Polycarbonate dome
• Simpler internal structure
• Available in multiple diameters
• Lower price point
• Easier to clean than flexible tubing

7. LED Retrofit Kit for Existing Tubular Skylights

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Don’t want to install a completely new solar tube but wish your current skylight had supplemental lighting? LED retrofit kits screw into the existing diffuser ring and provide nighttime illumination powered by a rechargeable battery. These kits are a smart upgrade for existing Solatube, VELUX, or Natural Light systems that lack built-in lighting.

The LED is typically cool white (4000K color temperature) and draws minimal power, making the rechargeable battery last 10-15 hours per charge. Many retrofit kits are motion-activated, turning on only when you enter the room below, which extends battery life significantly.

Installation is literally a screw-in swap with the existing diffuser cap—no tools or ceiling work required.

Features

• LED nightlight for existing skylights
• Motion-activated (most models)
• Rechargeable battery (8-15 hour runtime)
• Cool white LED (4000K)
• Screw-in installation (no tools needed)
• Fits standard 10-inch diffuser rings
• Waterproof, sealed design

8. Professional Installation Service (Local Contractors)

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If DIY installation isn’t your style, many local roofing and construction contractors specialize in solar tube installation. Professional installation eliminates the risk of roof leaks, ensures proper flashing, and provides workmanship guarantees that protect your investment.

The average cost for professional installation ranges from 500 to 1,500 dollars depending on your roof type, ceiling height, and local labor rates. While this is significantly higher than the equipment cost alone, it guarantees quality workmanship and often includes warranty protection beyond what the manufacturer provides.

Most contractors will work with the brand of your choice (Solatube, VELUX, Natural Light) and can advise on the best placement and system size for your home.

Features

• Professional installation by certified contractors
• Warranty on labor and materials
• Roof flashing guaranteed against leaks
• Professional placement advice
• Typically includes cleanup and site restoration
• Available in most markets (check local availability)
• Insured and bonded contractors

Solar Tubes Buying Guide

Key Takeaways

• Solar tubes are the most affordable way to add natural light to interior rooms without skylights
• The two market-leading brands are Solatube (99.7% reflectivity) and VELUX (98% reflectivity)
• Natural Light 10-inch tubes offer 98% reflectivity at half the price of premium brands
• Choose 10-inch diameter for bathrooms and hallways; larger sizes for living areas
• Acrylic domes (Solatube, VELUX) last longer than polycarbonate and resist yellowing
• Most DIYers can install systems in 4-6 hours using included flashing kits
• Professional installation costs 500-1,500 dollars but guarantees leak-free performance

What Are Solar Tubes?

Solar tubes, also called tubular skylights or sun tunnels, are cylindrical light collection and transmission systems that bring natural daylight into interior rooms without requiring a traditional skylight. They consist of three main components: a dome that collects sunlight from the roof, a reflective metallic tube (usually 10 inches in diameter) that transmits light through the ceiling cavity, and a diffuser that disperses light throughout the room below.

Unlike skylights, solar tubes are non-opening systems designed purely for daylighting. They don’t provide ventilation, but they require minimal roof penetration (just a single hole), making them ideal for retrofit applications in existing homes. The entire system weighs significantly less than a skylight, so roof structural support is rarely a concern.

How Do Solar Tubes Work?

Solar tubes work by harnessing the principle of reflective light transmission. The dome at the roof level collects sunlight and focuses it into the reflective tube. The interior of the tube is coated with highly reflective material (typically 95-99.7 percent, depending on the brand), which bounces light down the length of the tube with minimal loss. A simple physics concept: the more reflective the surface, the more light reaches the diffuser at the bottom.

The diffuser—a lens or frosted plastic component in your ceiling—spreads the concentrated light evenly throughout the room. This prevents hotspot glare while maximizing the illuminated area. On cloudy days, the reflective surfaces still capture and transmit diffuse light, though at reduced levels compared to sunny days.

Some advanced models, like the Solatube 160 ISn, include an integrated solar panel in the dome that powers a nightlight. During the day, the panel charges a small battery. At dusk, the nightlight automatically activates, providing ambient illumination without requiring any electrical wiring.

Benefits of Using Solar Tubes

The primary benefit of solar tubes is cost-effectiveness. A complete DIY installation typically runs 200-600 dollars depending on the system, compared to 1,500-3,000 dollars for a traditional skylight. The ROI is often immediate if you currently use artificial lighting in hallways or windowless bathrooms.

Energy savings are real but modest. A 10-inch solar tube can replace a 100-150 watt incandescent fixture for 8-10 hours per day in sunny climates. This translates to roughly 20-30 dollars per month in reduced electricity costs, assuming average utility rates. In cloudy climates, savings are lower.

Beyond energy, solar tubes provide psychological benefits. Natural light improves mood, regulates circadian rhythm, and makes small spaces feel larger. Bathrooms and hallways lit by natural daylight feel more spacious and inviting than those under artificial lighting.

Installation is straightforward enough for confident DIYers. Unlike skylights, solar tubes require no structural modifications, no support beams, and no additional framing. If your roof cavity is clear and accessible, you can complete installation in a single day.

Things to Keep in Mind Before Buying

Before purchasing a solar tube, assess your roof orientation and shading. Tubes pointed north or heavily shaded by trees will collect significantly less light. South-facing roofs (in the Northern Hemisphere) are ideal. Even then, shading from nearby trees can reduce output by 50 percent or more.

Measure your roof pitch. Steeper pitched roofs are easier to flash and less prone to water pooling around the dome. Very low-slope roofs (less than 3:12 pitch) require special flashing and are more difficult to waterproof. Some contractors refuse to install on very low-slope roofs because of leak risk.

Consider ceiling height. If you need to route the tube more than 30-40 inches vertically (say, from an upper floor through an attic to a lower ceiling), you’ll need to buy an extension kit, which adds cost. Measure your roof cavity depth before selecting a system.

Check attic insulation and ventilation. Poorly sealed attics with inadequate ventilation can cause condensation around the dome in cold weather. If your attic has these issues, address them before installing a solar tube.

Don’t assume every room is suitable. Solar tubes work best for bathrooms, hallways, closets, and small interior rooms. Open living areas, kitchens, and bedrooms often benefit more from multiple smaller tubes than from a single unit, since the light spread is limited by the tube diameter.

Types of Solar Tubes

Solar tubes come in three main types based on reflective material and quality:

Premium Brands (99.7% Reflectivity): Solatube is the market leader in this category. Their silver-coated aluminum tubing reflects nearly all incoming light, delivering the brightest results. These systems cost 400-700 dollars depending on features and extensions. Ideal if you want maximum light output and don’t mind paying for it.

Mid-Range Brands (98-98.5% Reflectivity): VELUX and some Natural Light models fall here. The reflectivity difference from premium brands is minimal in real-world performance (you’ll struggle to perceive a 1-1.7 percent difference), but the price is noticeably lower at 250-450 dollars. Best for budget-conscious buyers who don’t need premium features.

Budget Brands (95-96% Reflectivity): Generic rigid sun tunnels and off-brand flexible tubing systems reflect less light but are significantly cheaper at 100-250 dollars. The light output is noticeably dimmer, and the dome materials (polycarbonate) degrade faster. Only choose this category if budget is the absolute primary concern.

Case Study: Brightening a Dark Bathroom Without a Window

Background

A homeowner in Portland, Oregon owned a modest home built in the 1970s with a master bathroom positioned in the center of the house, away from any external walls. The bathroom had no windows and relied entirely on artificial lighting, even during daytime hours. The homeowner wanted to add natural light without undertaking expensive renovations.

Project Overview

The homeowner consulted a local contractor and decided on a 10-inch Solatube 160 DS system with standard reach. The bathroom ceiling was approximately 8 feet high, and the roof cavity above was clear with good access from the attic space. The south-facing roof section above the bathroom had minimal tree shading.

Implementation

The contractor installed the system on a Saturday morning, completing the work in approximately 4 hours. The flashing was sealed with roofing cement, and the interior diffuser was installed in the existing drywall ceiling opening (12-inch hole prepared beforehand). The attic route was clear, requiring no ducting modifications.

Results

Post-installation, the bathroom received approximately 200-250 square feet of illumination during daylight hours on sunny days. This reduced the need for artificial lighting by roughly 80 percent during morning and afternoon hours. On cloudy Portland days, the light output dropped but still eliminated the need for overhead fixtures for general tasks like showering and grooming. The homeowner reported a significant improvement in the bathroom’s perceived spaciousness and a positive impact on mood during winter months when cloud cover was heavy.

Expert Insights From Our Solar Panel Installers About Solar Tubes

“Solar tubes are one of the best-kept secrets in residential daylight harvesting,” says one of our senior solar panel installers with over 15 years of experience in sustainable home improvements. “Homeowners often dismiss them because they think skylights and windows are the only options. But for interior rooms, bathrooms, and closets, a 10-inch solar tube often beats a skylight in terms of cost, ease of installation, and leak prevention. The reflective tubing is simple, proven technology that’s been in use for two decades. The main thing we stress to customers is proper roof flashing. Get that right, and the system will outlast most roofing materials. Cut corners on flashing, and you’re buying trouble. That’s why I always recommend professional installation for anything involving roof penetration. The extra cost is worth the peace of mind.”

Frequently Asked Questions

Summing Up

Solar tubes are a cost-effective, straightforward way to bring natural daylight to interior rooms. Whether you choose the premium Solatube 160 ISn with integrated nightlight or a budget-friendly Natural Light system, you’ll notice an immediate improvement in the illuminated room’s brightness, spaciousness, and appeal. The key is matching the system to your roof orientation, ceiling height, and budget.

For professional solar installation services in your area, call us free on (855) 427-0058 or get a free quote from our network of certified installers. Many installers offer solar tube installation alongside rooftop solar panel systems, ensuring your entire home benefits from harnessing the sun’s energy.

Updated April 2026