Curb vs. Deck Mount Skylights: Choosing the Right Fit for Your Home
Adding a skylight can dramatically transform a room, flooding it with natural light and creating a sense of openness. However, the installation method significantly impacts the overall look, cost, and practicality. The two main types are curb-mount and deck-mount skylights. Understanding the key differences will help you choose the best option for your home renovation project.
What is a Curb-Mount Skylight?
Curb-mount skylights, as the name suggests, are installed into a pre-built curb or frame that extends from the roof. This curb provides structural support and creates a weathertight seal around the skylight. This method is generally preferred for larger skylights and those installed in sloped roofs where more significant structural reinforcement is needed.
Advantages of Curb-Mount Skylights:
- Greater structural support: The curb provides a robust foundation, particularly crucial for larger and heavier skylights.
- Improved insulation: The space between the curb and the skylight offers an opportunity for added insulation, enhancing energy efficiency.
- Easier flashing: The curb simplifies the process of flashing (waterproofing) the skylight, minimizing the risk of leaks.
- Better weather protection: The raised curb helps to deflect water and snow away from the skylight.
Disadvantages of Curb-Mount Skylights:
- More expensive: The additional cost of constructing the curb increases the overall project expense.
- More complex installation: The construction of the curb adds time and labor to the installation process.
- Potential for reduced headroom: The curb's height can slightly reduce the interior ceiling height.
What is a Deck-Mount Skylight?
Deck-mount skylights are installed directly onto the roof deck, eliminating the need for a separate curb. This simpler installation method is often favored for smaller skylights and flat roofs.
Advantages of Deck-Mount Skylights:
- Less expensive: The absence of a curb makes deck-mount skylights generally less costly to install.
- Simpler installation: The installation process is quicker and less complex.
- Maintains headroom: No curb means no reduction in interior ceiling height.
Disadvantages of Deck-Mount Skylights:
- Less structural support: This method relies solely on the roof deck for support, limiting the size and weight of the skylight that can be installed.
- More challenging flashing: Creating a watertight seal around a deck-mount skylight requires more meticulous flashing.
- Higher risk of leaks: If not installed correctly, deck-mount skylights are more prone to leaks.
- Limited to smaller sizes: Usually not suitable for very large skylights.
What are the differences between curb mount and deck mount skylights?
The primary difference lies in the installation method. Curb-mount utilizes a pre-built curb for support, whereas deck-mount integrates directly with the roof deck. This fundamental difference leads to variations in cost, complexity, structural integrity, and suitability for different roof types and skylight sizes.
Which type of skylight is better?
There's no single "better" option; the ideal choice depends on your specific needs and circumstances. Consider factors like:
- Skylight size: Larger skylights typically require curb mounting.
- Roof type: Curb-mount is generally preferred for sloped roofs, while deck-mount is suitable for flat roofs.
- Budget: Deck-mount is usually less expensive.
- Installation complexity: Deck-mount is simpler to install.
- Energy efficiency: Curb-mount often offers better insulation.
Careful consideration of these factors will guide you towards the best skylight installation method for your home improvement project. Consulting with a qualified roofing professional is highly recommended to ensure a safe and effective installation.
How much do curb mount skylights cost?
The cost of curb-mount skylights varies based on size, features, and materials. Expect a higher price point compared to deck-mount options due to the added cost of curb construction and installation.
How much do deck mount skylights cost?
Similar to curb-mount, the cost of deck-mount skylights depends on size, features, and materials. However, generally, they are less expensive than curb-mount solutions.
What is the best skylight for a flat roof?
Deck-mount skylights are usually the better choice for flat roofs, as they avoid the need for a curb that might interfere with the roof's drainage.
What is the best skylight for a sloped roof?
Curb-mount skylights are generally preferred for sloped roofs because they offer better structural support and simplified flashing, leading to enhanced weather protection.
