Yes, tubular skylights are specifically designed to be easy to install in retrofit projects while maintaining a watertight roof connection.
A retrofit installation involves adding a skylight to an existing roof instead of during the construction. Tubular skylights are ideal for this because they require only a small roof opening and minimal structural modification. The flexible tubing helps avoid attic obstacles, so installation doesn’t require a framed curb or significant alterations to rafters.
For watertight performance, the key factor is the integrated flashing system. Solatube Daylighting Systems use roof-specific flashings that are engineered to match roof type and pitch. During retrofit installation on an asphalt shingle roof, the flashing slides under the upper shingle courses and over the lower ones. This preserves the roof’s natural water-shedding design instead of interrupting it.
Because the flashing, dome, and seals are designed as a complete system, installers are not fabricating waterproofing details on site. That reduces installation complexity and lowers the risk of leaks.
In short, tubular skylights are one of the most retrofit-friendly daylighting options available. When the correct flashing kit is selected for the existing roof and installed according to manufacturer specifications, they provide a secure, watertight connection without major roof reconstruction.