Service Guide

Skylight Replacement

Skylight replacement involves removing an aging or failed skylight and installing a new unit with updated flashing and weatherproofing. Done right, it can improve daylight, comfort, and energy performance while reducing the risk of leaks.

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Typical range US: $800 - $5,300
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Use this for Costs, questions, and project fit

What homeowners should know

Most replacements are like-for-like in size and style, but you may be able to upgrade to better glazing, ventilation options, or integrated shades. The installer will assess the skylight, surrounding shingles, underlayment, framing, and interior finishes to spot water damage or rot that may need repair.

Project scope depends on skylight type (fixed vs. venting), mounting (curb-mounted vs. deck-mounted), roof pitch, and the condition of the roof and framing. Many roofers recommend replacing skylights when re-roofing to avoid disturbing new shingles later and to refresh flashing in one coordinated project.

Before booking, ask about manufacturer-matched flashing kits for your roof pitch, how the opening will be sealed and insulated, what interior repairs are included, whether a permit or inspection may be needed, how they will protect your home during install, cleanup plans, and warranty terms for both product and workmanship.

When this service is needed

Recurrent leaks, stained drywall, or peeling paint around the skylight
Cracks, damaged glass or dome, or failed seals with fogging between panes
Drafts, temperature swings, or whistling/squeaking from movement at the unit
Roof replacement is planned and the skylight is older or has outdated flashing

Repair vs replacement

Minor issues like loose flashing, worn sealant, or isolated gasket failures can sometimes be repaired. If the unit is newer, structurally sound, and the glazing is clear, targeted repairs or re-flashing may extend its life.

Replacement is often the better choice if there are repeated leaks, cracks, failed insulated glass with persistent condensation, yellowed or brittle domes, widespread flashing or curb deterioration, or if the skylight is nearing end of life. Many contractors advise replacing older skylights during a roof replacement so new shingles and flashing integrate properly and you avoid opening the roof again soon after.

Common problems to compare

Leaks at flashing or curb, especially after storms or freeze-thaw cycles
Condensation or fogging between panes from failed seals
Cracked, crazed, or yellowed glazing or domes reducing clarity
Drafts and temperature swings from poor insulation or gaps
Interior water stains, bubbling paint, or soft drywall indicating hidden moisture

Questions homeowners often ask

Should I replace skylights when I get a new roof?

Many pros recommend it if your units are older or showing wear. Replacing them with the roof lets the roofer install new flashing with the shingles and reduces future disturbance to the new roof.

What affects skylight replacement cost the most?

Skylight type and size, glazing options, roof pitch and access, whether interior drywall/paint repairs are needed, and if rot or framing repairs are required. Venting units and custom sizes typically cost more than fixed, standard sizes.

Do I need a permit?

Requirements vary by jurisdiction. Some areas may require a permit for structural changes, electrical (for powered venting shades/fans), or when modifying roof openings. Ask your contractor whether a permit or inspection may be needed where you live.

How long does replacement take?

A straightforward like-for-like swap with proper flashing can often be completed in a day per unit, but repairs to framing or interior finishes may extend the timeline.

What should be included in the quote?

The skylight model and glazing, flashing kit matched to your roof, ice/water shielding details, disposal, interior finish repairs, protection/cleanup, warranty terms, and any allowances for unforeseen rot or decking repairs.

How do I compare companies?

Look for experience with your skylight brand and roof type, proof of insurance, clear scope and materials, manufacturer-approved flashing, written warranties, and recent local references with similar projects.