How to Install a Skylight (In an Existing Roofing System)

Skylights are a fantastic way to bring more natural light into your home, revitalize your living space, and even increase your property value. However, installing a skylight in an existing roofing system can feel like a daunting task for homeowners attempting this on their own. Fear not! This guide will simplify the process for you, step by step.

Here’s what you’ll learn in this post:

• Understanding the types of skylights available
• How to install a skylight
• Tips for ensuring a leak-free and professional finish

👉 Types of Skylights to Consider

Before you can install a skylight, it’s important to determine the type that works best for your home and needs.

Fixed skylights are non-opening and allow natural light to pass through, making them ideal for attics or rooms with high ceilings. Ventilated skylights, on the other hand, can be opened manually or with a remote control, making them a great choice for spaces like bathrooms or kitchens where added ventilation is beneficial. For smaller areas such as closets or hallways, tubular skylights are a compact and easier-to-install option compared to traditional skylights.

Preparing Your Roof for Skylight Installation

Preparation is a make-or-break step when installing a skylight. Here are the essentials you’ll need to check off before getting started:

• Picking the Perfect Spot: Choose a location that maximizes sunlight while avoiding structural obstacles like rafters or electrical wiring.
• Weather Check: Ensure clear weather during installation to minimize the risk of water damage.
• Gathering Your Tools: You’ll need a saw, measuring tape, screws, flashing, and waterproof sealants for the job.

✅ 6 Steps to Install a Skylight

Installing a skylight involves precise measurements and attention to detail. Here’s a step-by-step guide to get it done:

1. Plan Your Skylight Placement

Start by identifying the ideal location for your skylight based on the natural light you want to bring into the room. Consider the direction of the sun throughout the day and avoid areas that might cause glare or overheating. Measure the desired location from inside your home, ensuring that it aligns with your roof’s structural framework, such as rafters or trusses. Use a template (often provided with the skylight) to outline its shape and size on both the ceiling and the roof. Double-check all measurements to avoid misalignment later during installation. Proper planning at this stage will save time and prevent costly mistakes down the line.

2. Cut the Opening

Once you’ve finalized the placement, proceed by cutting an opening in the drywall on your ceiling. Use a drywall saw or utility knife to carefully follow your marked outline, taking care not to cut beyond the designated area. Afterward, move to the roof and repeat the process, cutting through the roofing material and underlying sheathing to match the skylight dimensions. Use a circular saw or reciprocating saw for this step, and be mindful not to damage nearby shingles or structural elements. Always wear safety gear, such as gloves and goggles, and ensure you’re working on a stable surface to avoid accidents.

3. Install the Flashing

Flashing is one of the most critical components of skylight installation as it prevents leaks and protects your home from water damage. Begin by installing step flashing around the skylight’s edges, ensuring that each piece overlaps properly to create a watertight seal. Secure the flashing with roofing nails, placing them at intervals to hold everything firmly in place. Take extra care with the corners, as these are the most vulnerable areas for leaks. To further ensure durability, apply a waterproof seal over the flashing, following the manufacturer’s instructions. This step will add an additional layer of protection against the elements.

4. Mount the Skylight

Now it’s time to position the skylight into the prepared opening. Carefully lift the skylight into place and check that it fits snugly within the cutout. Follow the manufacturer’s instructions for securing the skylight frame to the roof, ensuring it is level and stable. Use screws or brackets as directed, tightening them just enough to hold the skylight firmly without causing damage. Proper alignment is crucial, so take your time to adjust the skylight as needed. Once secured, test the stability by gently pressing on the frame to confirm it does not shift or wobble.

5. Seal the Edges

Sealing the edges of the skylight is essential to prevent water infiltration and maintain an airtight fit. Apply a generous layer of waterproof sealant around all edges of the skylight, ensuring complete coverage where the frame meets the roof. Use a caulking gun for precision and smooth out the sealant with a putty knife or your finger to remove excess and create a clean finish. Pay special attention to any gaps or irregularities, as these areas are more prone to leaks. Allow the sealant to dry fully before proceeding to the next step, following the product’s recommended drying time.

6. Reinstall Roofing Materials

To restore the roof’s appearance and functionality, replace the shingles or tiles around the skylight. Start by cutting the roofing materials to fit snugly around the skylight frame, ensuring they overlap the flashing to create a watertight barrier. Secure the shingles or tiles in place with roofing nails or adhesive, depending on the material. Take care to blend the new materials with the existing roof for a seamless look. This final step not only protects your skylight but also ensures the roof remains durable and weather-resistant. Inspect the finished installation for any gaps or loose materials, and make necessary adjustments to achieve a polished, professional result.

💧 Ensuring a Leak-Free Installation

Avoiding leaks is one of the top priorities when installing a skylight.

Double-Check Your Flashing

Carefully inspect the flashing around your skylight to ensure it’s properly installed and securely in place. Flashing acts as a critical barrier against water infiltration, so any gaps or misalignments can lead to leaks. Tighten any loose areas and replace damaged flashing to maintain a watertight seal.

Test Waterproofing

Once your skylight is installed, it’s essential to test its waterproofing. Simulate heavy rain by pouring water over the skylight using a hose or bucket. Observe for any leaks or signs of water seeping through. Identifying and fixing these issues early will prevent potential water damage in your home.

Use Quality Sealants

For long-lasting protection, always opt for high-quality waterproof sealants. These sealants provide an additional layer of defense against moisture, ensuring your skylight remains leak-free. Apply the sealant evenly around the edges of the skylight and reapply as necessary to maintain its effectiveness over time.

👨‍🔧 Skylight Installation Guide

In conclusion, installing a skylight is a wonderful way to bring natural light into your home and elevate its aesthetic appeal—when done correctly. That’s where our team at Kingfisher Roofing comes in. With over 20 years of experience, licensed and insured services, and a proven track record of 5-star customer satisfaction, we’re the trusted experts you can rely on to get the job done right.

Don’t take chances with your roof—choose Kingfisher Roofing for a seamless, durable skylight installation that enhances your home without worry. Contact us today to schedule your consultation and let us help you brighten your home with confidence!