Checkatrade
“CII fitted our roof lantern on the rear extension. Excellent craftsmanship, very professional team, and the room is transformed. Highly recommended.”
Roof Lanterns
Conservatory Roof Solutions
Transform an underused conservatory into a comfortable, year-round room with an insulated replacement roof. Controls temperature in both summer and winter, reduces energy bills, and stops furniture fading.
- Transforms conservatory into a year-round living space
- Eliminates extreme summer heat and winter cold
- Reduces energy bills and glare, stops furniture fading
- UPVC panelled interior ceiling option for a bright, airy finish
10YEARGUARANTEE
Assure certifiedNo subcontractorsFinance availableFree Survey
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If this looks like the right fit, we can survey the opening, confirm the specification, and price it properly for your home with no obligation.
Free surveyFixed quoteDirect CII installation team
Many conservatories are impractical for a large part of the year, uncomfortably hot in summer and bitterly cold in winter. An insulated conservatory roof replacement resolves this entirely, transforming an underused glass room into a comfortable, habitable space you can genuinely enjoy all year round. CII Double Glazing installs conservatory roof replacement solutions across Essex, fitting insulated roof systems that dramatically reduce seasonal temperature variation. The panelled interior ceiling is installed inside your existing conservatory structure, concealing the insulation and creating a clean, finished internal appearance. UPVC panelling is a popular choice for the interior ceiling, reflecting natural light to keep the room bright and airy while delivering the full thermal benefit of a properly insulated roof. The result is a room that stays warm in winter without excessive heating, and cool in summer without the need for fans or air conditioning. Furniture fading caused by UV exposure is also significantly reduced.
Key Specifications
Eliminates the extreme summer heat and winter cold that make conventional conservatories impractical
Insulated roof dramatically reduces seasonal temperature fluctuations year-round
Reduces glare and protects furniture from fading caused by UV exposure
UPVC panelled interior ceiling reflects light for a bright, airy interior finish
Low-maintenance materials. No repainting, retreating, or annual maintenance required
Planning permission usually not required for a like-for-like conservatory roof replacement
Installed by CII directly employed teams with no subcontractors at any stage
10-year installation guarantee on all conservatory roof work
Engineered for Light
What Makes Our Roof Lanterns Different
Maximum Natural Light
A roof lantern transforms the light quality of any extension or garden room. The full-glass structure floods the space from above, bringing daylight into the centre of the room year-round.
Thermally Broken Frames
Thermally broken aluminium construction prevents cold bridging through the frame, eliminating condensation on the interior surface and maintaining comfortable temperatures year-round.
Self-Cleaning Glass
Solar control self-cleaning glass uses a hydrophilic coating that breaks down organic material and rinses clean with rainwater. Ideal for overhead glazing that is impractical to clean manually.
Slim Aluminium Sightlines
Engineered aluminium profiles deliver structural strength at minimal section size, maximising the glass area and preserving uninterrupted views of the sky above.
Made to Measure
Every roof lantern is manufactured to the exact dimensions of your opening. Standard and bespoke pitches available. We survey, supply, and install, ensuring a precise weathertight fit first time.
10-Year Guarantee
All CII roof lantern installations carry our 10-year installation guarantee. Frames and glazing are covered against defects, and every qualifying installation comes with Assure certification on completion.
How It Works
From Survey to Sign-off
Step 1
Survey
We visit, measure, and advise on the right configuration for your property.
Step 2
Install
Our directly employed team installs with clean, tidy workmanship.
Step 3
Sign-off
Final checks, handover, and Assure certification where required.
Next Step
Want a fixed quote from a real survey?
We will measure up, talk through finishes and installation details, and give you a clear quote based on the actual opening rather than a generic estimate.
Free surveyFixed quoteDirect CII installation team
Google
“Roof lantern fitted over our orangery. The light it brings in is incredible. The installation team were excellent and left the site spotless. Highly recommend CII.”
Questions Answered
