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Before and After

Common Skylight Issues

Among the most common skylight problems are leaks and condensation. The causes may vary from one case to another, but the root of the problem is most often poor workmanship and a lack of knowledge on skylight installation.

Here are the most common skylight problems and their possible causes:


Leaking can be seen either within the skylight tunnel or where the skylight connects to the top of the drywall up at the top of the skylight tunnel. This is typically a result of a poor roofing connection or a poorly manufactured skylight window.

Condensation, slow drips or enlarging stains

This symptom's main culprits are lack of airflow

(ie. no bathroom fan), or even a lack of energy efficiency.

Overwhelming heat on the upper floors

This is caused by a poor-quality old dome that has no R-Value that can amplify the heat in the summertime. 

Cold draft in the winter

In cases when you feel drafts in the room with a skylight, it’s because the proper sealing hadn’t been done when installing the skylight.

In some cases just a simple skylight swap is needed, where we remove the existing skylight, clean the top of the curb, then supply and install the new unit.

Quite often we would tarp off the skylight in the interim until we come to do a full replacement.

Typically, skylight issues don’t require much work to be done, thus the repairs can be done quickly. For example, repairing damaged surrounding shingles or sealing small gaps in the structure.

Things to Consider


Most old bubble skylights have terrible energy efficiency leaving the home fighting to keep each floor at a regular temperature. New Skylights Come Triple LowE Coated and Vacuum Sealed with Argon Gas


Whether you're installing new or replacing a skylight the interior connection is a huge part of the work that will make or break the aesthetics of the skylight. The trim or drywall work is what keeps your eye on the sky. 


GTA Skylights has a standard 10 Year Workmanship Warranty on all the work we do. Each Skylight comes with its own warranty up to 20 Years!

Benefits of a New Skylight

Visuals - A skylight can provide not only light but a view of whether that be day and night. During the day a view of the skylight and clouds is your base line view. In a loft setting and the right location that view can be anything from a city skyline or a wonderful natural environment. Indirectly the view of the home interior completely changes when the abundant light blasts the room with light from the skylight. A stairway, for example, can be drastically changed and become a feature of a home as opposed to just a stairway. 


Fresh Air - Venting skylights give us the ability to regulate the interior temperature of the home on a functional level. For example, over a stairway on the top floor of the home, a skylight will pull the air from the lower floors via convection. In the summer months, this can really reduce the humidity on the top floor of the home.

Roof windows in a loft that are typically within arms reach are closer relative to wall windows they help with more of a cross breeze and often do a better job. However, the combination of windows and skylights together is a match made in heaven.

Mood - There is substantial evidence showing the benefits of how a skylight or a well-lit home can reduce stress due to the balance of your circadian rhythm being more in tune due to more light in the home. And who doesn't like drinking a morning coffee in a more lit room :) 

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