Installing a Lantern Roof with Confidence
- The Plastics Shed

- Sep 29
- 4 min read
Adding a lantern roof to your home can transform a space, flooding it with natural light and creating a stunning architectural feature. Whether you’re a DIY enthusiast or a trade professional, tackling this project might feel a bit daunting at first. But with the right guidance, tools, and materials, you can approach your lantern roof installation with confidence and ease. Let’s walk through the process together, step by step.
Preparing for Your Lantern Roof Installation
Before you even pick up a drill or measure your space, preparation is key. Start by assessing the area where the lantern roof will go. This usually means a flat roof or an orangery-style extension. You’ll want to check the structural integrity of the existing roof and ensure it can support the new installation. If you’re unsure, consulting a structural engineer is a smart move.
Next, gather all your materials. Quality is crucial here. Opt for durable, maintenance-free materials that will stand the test of time and weather. The Plastics Shed offers a great range of building plastics that are perfect for this kind of project. Having everything on hand before you start will save you from frustrating mid-project runs to the store.
Don’t forget to check your local building regulations. Some areas require planning permission for roof alterations, especially if your home is listed or in a conservation area. It’s better to be safe than sorry.
Tools You’ll Need
Tape measure
Spirit level
Power drill and bits
Silicone sealant
Screwdrivers
Ladder or scaffolding
Safety goggles and gloves
Having these ready will make your work smoother and safer.

Step-by-Step Guide to Lantern Roof Installation
Now, let’s get into the nitty-gritty of the installation. The process can be broken down into manageable steps:
Remove the existing roof covering
Carefully strip away the old roofing material where the lantern roof will be installed. This might involve removing tiles, felt, or other coverings.
Build the upstand
The upstand is a raised frame around the opening that supports the lantern roof. It needs to be sturdy and perfectly level. Use treated timber or a suitable alternative.
Install the lantern roof frame
Position the frame on the upstand and secure it with screws. Check for level and square as you go. This step is crucial for a neat finish and proper water drainage.
Fit the glazing panels
Depending on your chosen design, these could be glass or polycarbonate. Handle with care and seal all edges with silicone to prevent leaks.
Apply flashing and sealant
Flashing protects the edges where the lantern roof meets the existing roof. Seal all joints thoroughly to keep your home dry.
Final checks and clean-up
Inspect your work for any gaps or loose fittings. Clean the glass or panels to reveal your new bright space.
Taking your time with each step will pay off in a professional-looking finish.

How much does a lantern roof cost?
Understanding the cost involved helps you plan your budget realistically. The price of a lantern roof varies depending on size, materials, and whether you hire professionals or do it yourself.
Materials: High-quality glazing and frames can range from £1,000 to £3,000 or more. Opting for maintenance-free plastics from trusted suppliers like The Plastics Shed can save money in the long run.
Labour: If you hire a professional, expect to pay between £1,500 and £3,500 depending on complexity and location.
Additional costs: Don’t forget planning permission fees, scaffolding hire, and any structural work needed.
DIY installation can reduce labour costs significantly but requires time and skill. Weigh your options carefully and consider your confidence level before deciding.

Tips for a Smooth Installation Experience
Here are some practical tips to keep your project on track:
Work with a buddy: Having an extra pair of hands makes handling large panels safer and easier.
Check weather forecasts: Choose a dry, calm day to avoid complications with wet materials or wind.
Use protective gear: Safety goggles, gloves, and sturdy footwear are non-negotiable.
Keep your workspace tidy: Clear debris and tools regularly to prevent accidents.
Follow manufacturer instructions: Every product has its quirks. Reading the manual can save you headaches.
Test water drainage: After installation, pour water around the edges to check for leaks or pooling.
Remember, patience is your best friend here. Rushing can lead to mistakes that cost time and money to fix.
Bringing Light and Style to Your Home
Installing a lantern roof is more than just a home improvement project. It’s about creating a space that feels open, airy, and welcoming. Imagine sitting in your kitchen or living room bathed in natural light, watching the sky change through your new roof feature. It’s like having a little piece of the outdoors inside.
With the right preparation, materials, and mindset, you can achieve a stunning result that adds value and joy to your home. Whether you’re tackling this as a DIY project or working alongside professionals, the key is to take it step by step and enjoy the process.
So, roll up your sleeves and get ready to brighten your home with a beautiful lantern roof. You’ve got this!

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