Skylight Shafts – Replacement Light Shafts for Roof Skylights

Shafts are the internal light channels that connect a roof-mounted skylight to the ceiling diffuser below, guiding natural light into the room. They influence how much daylight enters a space and how evenly it spreads. Shafts may need replacement or adjustment following ceiling changes, water damage, or when older components degrade. Skybrite Skylights supplies replacement shafts and compatible components to suit a wide range of skylight configurations commonly used in Australian homes.

What shafts do

A shaft forms the enclosed pathway between the roof opening and the ceiling diffuser. Its purpose is to contain and direct daylight into the room below while separating the roof cavity from the interior space. The flexi shaft’s internal finish and geometry can influence brightness and light spread, particularly in rooms with deeper ceilings.

When a skylight shaft needs attention

Shafts can be affected by moisture ingress, movement in roof structures, or changes made during renovations. Signs that a shaft may need replacement or realignment include visible staining, warping, gaps at joints, or a noticeable drop in light performance after ceiling or insulation works.

Fit and compatibility considerations

Flexi shafts are matched to the skylight base size, ceiling opening, roof pitch, and the distance between roof and ceiling. Because skylight systems vary by brand and age, shafts are not universally interchangeable. Accurate measurements of the ceiling opening and depth of the roof cavity help determine the appropriate shaft profile and length.

Installation and alignment notes

Proper alignment of the shaft with both the skylight base and ceiling diffuser helps maintain light performance and reduces the risk of drafts or moisture pathways. Replacement shafts should be fitted so joints are secure and sealed, particularly where the shaft meets the roof opening and ceiling insert.

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