
Electric or manual opening
Choose a push-out manual mechanism or an electric motor with remote control, depending on the roof height and access.

Roof Lanterns
A flat rooflight that opens electrically or manually for ventilation. The same single-panel clean profile as the Maxi-Flat, with a built-in opening mechanism so you can bring in fresh air without a separate vent unit.
Technical Details
Free Survey
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.
The Maxi-Opener Rooflight is a flat rooflight with a built-in opening mechanism for natural ventilation. Where a standard rooflight brings in light but no air, the Maxi-Opener allows the glazing panel to open electrically or manually, drawing fresh air into the room below. Rain-sensor and thermostatically controlled options are available so the rooflight manages itself around the weather and room temperature. Self-cleaning argon glass and warm-edge spacers are standard, and every unit is built to your exact dimensions on the same 5-day express service as the rest of the Maxi range.
Full opening rooflight for natural ventilation on flat roofs
Manual or electric opening mechanism options
Rain-sensor automatic close prevents water ingress
Thermostatically controlled option opens and closes with room temperature
Self-cleaning, argon-filled glass with warm-edge spacers as standard
Glass tints available for glare and solar heat management
5-day express manufacturing lead time from our premium aluminium manufacturer
CII handles the survey, specification, and installation throughout
Opening Rooflight
The Maxi-Opener brings the ventilation benefit of a window to a flat roof, without a separate vent unit or an ugly add-on.

Choose a push-out manual mechanism or an electric motor with remote control, depending on the roof height and access.

A rain-sensor version closes automatically when rain is detected, so the rooflight can be left open without monitoring the weather.

A thermostatically controlled version opens and closes with room temperature, providing passive cooling without manual operation.

Self-cleaning, argon-filled, warm-edge glass is standard, and glass tints are available for solar heat management.
How It Works
Step 1
We visit, measure, and advise on the right configuration for your property.
Step 2
Our directly employed team installs with clean, tidy workmanship.
Step 3
Final checks, handover, and Assure certification where required.
Next Step
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.
“CII fitted our roof lantern on the rear extension. Excellent craftsmanship, very professional team, and the room is transformed. Highly recommended.”
“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
Where We Work
Based in Romford, we regularly work across Essex, North and East London, and into Hertfordshire. If you are not sure whether we cover your area, just give us a call.
Find Us
Phone
020 8500 9100Hours
Mon to Fri, 8am to 6pm
Free home surveys available across our coverage area.
Areas We Cover
View all local area pages or not seeing your area? Get in touch and we will let you know if we travel to you.
Get Started Today
Get a free, no-obligation quote from our team. We survey, advise, and install. All handled directly, no subcontractors.
Mon-Fri 8am-6pm · No call centres · Speak directly with Ross
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