What is solar tubes installation?
Solar tube installation (also known as tubular skylights or sun tunnels) is a brilliant, cost-effective service designed to channel natural sunlight directly into the dark, windowless areas of your home. Unlike traditional skylights that require reframing your roof and ceiling, a solar tube consists of a small clear dome on the roof, a highly reflective metal tube running through the attic, and a stylish diffuser mounted on your ceiling. This system acts as a massive optical funnel, capturing sunlight—even on overcast days—and bouncing it down into hallways, bathrooms, and walk-in closets.
Choosing to install natural lighting is an incredibly popular home upgrade for a reason: human beings thrive in natural sunlight. Artificial bulbs simply cannot replicate the full-spectrum color rendering and mood-boosting qualities of actual daylight. Beyond the psychological benefits, tubular skylights offer immediate energy savings by allowing you to keep electric lights turned off during the day. Because they require no structural changes to your roof trusses, solar tubes provide all the benefits of a traditional skylight at a fraction of the cost, making them one of the most satisfying and affordable improvements you can make to a dark home.
How solar tubes installation works
- Location Planning: We help you select the ideal ceiling location for the diffuser (the light fixture) and find the corresponding spot on the roof that offers the most direct sun exposure, avoiding attic obstructions.
- Cutting the Openings: A small, perfectly round hole (typically 10 or 14 inches in diameter) is cut into the ceiling drywall. A corresponding hole is then carefully cut through the roof decking and shingles.
- Mounting the Roof Dome: The clear acrylic or polycarbonate dome is mounted on the roof. We install heavy-duty metal flashing that integrates seamlessly under your shingles to ensure a 100% waterproof seal.
- Installing the Reflective Tube: The highly polished, mirror-like aluminum tubing is inserted through the roof opening and connected down to the ceiling opening. If the path isn’t perfectly straight, angled elbow joints are used.
- Sealing the Tube: All joints in the tubing are taped with specialized foil tape to prevent attic dust and bugs from entering the light shaft.
- Diffuser Installation: Finally, the decorative ceiling diffuser is snapped into place from inside the room. It looks just like a modern flush-mount light fixture, but it radiates brilliant, natural sunshine.
Cost factors
Installing a sun tunnel is highly affordable, but a few variables can impact the final quote.
| Factor | Impact on cost |
|---|---|
| Tube diameter | A 14-inch tube (suitable for living rooms) costs more than a 10-inch tube (suitable for small bathrooms). |
| Attic distance | The farther the distance between your roof and your ceiling, the more sections of reflective tubing you will need to purchase. |
| Roof type | Installing on standard asphalt shingles is straightforward. Tile, metal, or steeply pitched roofs require specialized flashing kits and more labor time. |
| Add-on features | Adding integrated electric light kits (for night use), exhaust fans (for bathrooms), or daylight dimmers will increase the total cost. |
When this service is the right fit
- Windowless rooms: Interior bathrooms, laundry rooms, and long hallways that remain pitch black even in the middle of the day.
- Budget-conscious remodeling: Homeowners who want the feel of a skylight but don’t want to spend thousands on structural framing and drywall work.
- Energy savers: Families looking to reduce their daytime electricity usage by taking advantage of free natural light.
- Homes with deep attics: Properties where traditional skylight light shafts would be too deep and expensive to build.
Questions to ask your installer
- Are you certified by the specific manufacturer (e.g., Solatube or Velux) to install this product?
- Does the quote include the specialized flashing required for my specific type of roofing material?
- Will the tube need to be angled to avoid my attic HVAC ducts, and will that reduce the light output?
- Does the roof dome feature UV protection to prevent my carpets and furniture from fading?
- Can we add a ventilation fan kit to the tube since it’s being installed in a bathroom?
- What is the warranty on the roof flashing against leaks?
What to watch out for
When hiring someone for solar tubes installation, the primary concern is the waterproofing of the roof penetration. Watch out for handymen or inexperienced installers who rely on copious amounts of roofing tar or caulk instead of installing the proper metal flashing kit under the shingles; caulk will dry out and leak within a few years. Additionally, make sure the installer uses high-quality, rigid reflective tubing. Cheaper kits use flexible, accordion-style tubing that is vastly inferior, losing up to 50% of the light as it bounces down the ridges. Always insist on rigid tubing with a 99% reflectivity rating for maximum brightness.