Measuring Up: Ensure Your Roof Lantern Fits Perfectly

Tom Warren
Sep 22
2 min read

Updated: Oct 22

Ordering a roof lantern is exciting, but accurate measurements are key. Whether you're replacing an existing unit or cutting a new opening, here’s how to measure for a perfect fit.

Understanding the Basics of Measurement

Step 1: Internal vs External

Are your measurements based on internal ceiling space or external kerb dimensions? Stratus Lanterns are sized to external kerb dimensions. This distinction is crucial for ensuring a proper fit.

Step 2: Measure the Kerb Opening

Measure the external edge-to-edge dimensions of your upstand or kerb. Note the width and length in millimetres or centimetres. Accurate measurements here will save you time and hassle later.

Step 3: Allow for Overhang

Most lanterns overhang the kerb by a small margin to ensure weatherproofing. This overhang is essential for preventing leaks and ensuring durability. Check with us if unsure – we’re happy to guide you through the process.

Step 4: Choose the Style

From 2-way rectangular designs to square pyramid lanterns, your measurement may suit multiple styles. Consider the aesthetics of your home when making this choice. Our team can help you select the most suitable shape based on your measurements and preferences.

Additional Considerations

Final Tip

When in doubt, always double-check your measurements. A small error can lead to significant issues. Or send us your roof plans – we can recommend the ideal Stratus Roof Lantern for your project.

Why Accurate Measurements Matter

Accurate measurements are vital for several reasons. They ensure that your roof lantern fits perfectly, enhancing both functionality and aesthetics. A well-fitted lantern will improve natural light flow and ventilation in your space. Additionally, it can contribute to energy efficiency by minimizing heat loss.

The Impact of Poor Measurements

Poor measurements can lead to a variety of problems. A lantern that is too large may not sit securely, while one that is too small will leave gaps. These gaps can lead to water ingress, resulting in damage to your home over time. Therefore, taking the time to measure correctly is essential.

Common Mistakes to Avoid

When measuring for your roof lantern, be mindful of these common mistakes:

Rushing the Process: Take your time to ensure accuracy.
Using Inconsistent Units: Stick to either millimetres or centimetres throughout.
Neglecting the Overhang: Always account for the overhang to ensure proper fit and weatherproofing.

Conclusion

In conclusion, measuring for your roof lantern is a straightforward process, but it requires attention to detail. By following these steps, you can ensure that your lantern fits perfectly, enhancing your home’s beauty and functionality. Remember, if you have any doubts, don’t hesitate to reach out for assistance.