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Build Shed Skylights

Size and Materials

Choosing the right size for your shed's skylights is crucial. Measure your shed's dimensions carefully to ensure a perfect fit. Too small, and you won't get enough light; too large, and you might need extensive roof modifications.

For durability, consider materials wisely. Treated wood panels are ideal for framing, as they withstand various weather conditions. Polycarbonate skylights are an excellent choice for the actual window. They're durable, nearly unbreakable, and designed to handle England's unpredictable climate while letting in plenty of light.

Avoid cutting corners on quality. Opt for good quality treated wood and polycarbonate to prevent issues like rot or leaks down the line.

Skylight placement is key. Position them to catch the most sunlight during the day, ensuring they brighten your space effectively.

Installation is best done with a partner. It requires coordination and an extra set of hands to keep things balanced. Before you start, double-check your parts list to avoid mid-project interruptions.

Person measuring a garden shed roof for skylight installation

Installation Process

  1. Begin inside the shed by measuring and marking out the skylight openings. Precision is crucial for a proper fit.
  2. Use a sharp saw to cut the openings from within the shed. This approach provides an easier angle and aligns with the eventual positioning and light direction.
  3. Apply membrane tape around the edges of your new openings to create a foundation for a watertight installation.
  4. Secure the skylight by screwing it into place, ensuring stability against harsh weather.
  5. Apply caulk generously around the skylight's perimeter, filling any gaps to prevent water intrusion.

Position your skylight strategically: The top and sides should fit snugly beneath the existing roof felt, while the bottom edge rests on the roofing material. This arrangement uses gravity to channel water away from the frame.

DIY enthusiast cutting a skylight opening from inside a garden shed

Waterproofing Techniques

Proper waterproofing is essential to protect your shed from leaks and water damage. Membrane tape and thick caulk are your primary tools for this task.

  • Start by applying membrane tape around the edges of your skylight openings, pressing firmly against the sides. This creates a solid base for your waterproof seal.
  • For polycarbonate channels, run them horizontally to the roof's pitch. This orientation helps water flow down smoothly, following gravity's natural pull.
  • With tape in place and channels set, apply caulk generously. Focus on joints and edges, sealing every potential water entry point tightly.
  • Pay extra attention to bottom edges, where capillary action might allow water to sneak in.

A solid caulk application at the bottom of your skylight prevents capillary action and ice damming, ensuring only sunlight enters your garden shed.

Close-up of hands applying membrane tape around a skylight opening

By focusing on proper sizing, quality materials, and thorough waterproofing, you can create a shed that's both functional and bright. This approach ensures your garden haven remains dry while welcoming natural light.

  1. Curtis M. Shed Skylight Installation Guide. Activent; 2016.
  2. Handy Home Products. Garden Shed Construction Manual. 2022.
  3. Outdoor Living Today. Cedar Shed Building Techniques. 2021.
  4. Canopia by Palram. Polycarbonate Skylight Installation Manual. 2023.