Opening Skylights for Flat Roofs | Mardome Trade

Mardome Trade Opening Skylights for Flat Roofs

Mardome Trade opening skylights for flat roofs are an excellent choice for homeowners, installers and builders wanting a cost-effective solution that delivers more natural light, improved ventilation and enhanced indoor air quality. Designed specifically for flat roofs and low pitched roofs, these opening skylights for flat roofs provide increased airflow in areas where fresh air is essential, such as kitchens, bathrooms and high-humidity living spaces.

These opening skylights for flat roof applications are available in both manual options and electric opening rooflights, allowing you to choose the right opening model for your property. Each unit opens up to 300mm, offering effective natural ventilation to help improve indoor air quality, reduce condensation and regulate indoor temperature throughout the warmer months.

Contemporary, Low-Rise Design

The Mardome Trade design is sleek, contemporary and minimalistic, giving the appearance of a premium flat glass rooflight or even a slimline flat roof window. Its low-rise profile allows natural daylight to flood the room, helping to reduce dependency on artificial lighting while creating a brighter, more comfortable living space.

Although different in construction from flat glass rooflights or roof lanterns, these dome-style flat rooflights stand out for their excellent thermal performance, durability and versatility. They are suitable for a wide selection of flat roof projects, blending effortlessly with modern homes and commercial buildings alike.

Robust, Durable and Secure Construction

Every unit is engineered with long-term strength in mind. The multi-wall PVC kerb is resilient to installation damage, ensuring the skylight remains secure and weather-resistant once installed on the roof. The glazing uses Marlon FSX Longlife polycarbonate, offering UV protection and impact resistance up to 200 times stronger than glass, ideal for harsh weather conditions on any flat roof structure.

Tamper-resistant fixings, durable hinges and a tightly sealed frame ensure these opening models meet safety regulations and create a reliable, secure rooflight solution. Whether fixed or opening, all units are produced to the highest quality standards in our UK factory, ensuring a product range you can trust.

Thermally Efficient Ventilated Rooflight Options

These Mardome Trade opening skylights for flat roofs deliver impressive thermal performance, helping maintain indoor temperature across all seasons. With the option of single, double glazed or triple glazed skins, they achieve U-values as low as 1.8 W/m²K, supporting compliance with modern building regulations.

Because each unit includes a kerb, you can select the kerb height and the number of ventilation vents required for your next project. This flexibility ensures the skylight will stand up to weather conditions, heat retention needs and specific flat roof layouts.

Glazing Specification

• 3mm impact-resistant Marlon FSX polycarbonate outer dome (UV protected on both sides)

• 2mm Marlon FS polycarbonate inner domes for double or triple-skin units

• Suitable for a range of flat roof constructions, including timber and warm roof systems

These glazing options offer excellent energy efficiency, long-term clarity and enhanced safety for any property.

Manual and Electric Opening Options

The Mardome Trade product range includes both manual opening and electric opening rooflights:

Manual Opening Rooflights

• Ideal for roofs with easy access

• Simple, dependable operation

• Cost effective and low maintenance

• Suitable for a wide selection of flat roofs

Electric Opening Rooflights

• Operated using wall switch or remote control

• Optional rain sensor for automatic closing

• Helps regulate ventilation and maintain indoor air quality

• Great for hard-to-reach rooflight locations

These electric and manual options ensure you can choose opening skylights for flat roof installations that suit your room design, accessibility needs and ventilation requirements.

Simple & Quick Installation

Each Mardome dome arrives ready to fit, delivered in robust packaging for safe handling on site. Compatible with standard sizes and a broad range of flat roof constructions, these units are designed for fast installation with minimal disruption. Kerb and fixing options ensure they remain suitable for both new builds and refurbishment projects.

Once installed, these opening skylights for flat roofs require very little maintenance, offering consistent ventilation, natural daylight and reliable long-term performance.

Advantages of Mardome Trade Opening Skylights for Flat Roofs

• Contemporary minimalist design

• Delivers more natural light and ventilation

• Helps improve indoor air quality

• Highly durable and secure

• Thermally efficient (U-values from 1.8 W/m²K)

• Wide selection of kerb heights and glazing options

• Manual and electric opening options available

• Compliant with building regulations and safety regulations

• Perfect for spaces needing fresh air and natural daylight

• 10-year warranty as standard

• Manufactured in a UK factory

• Excellent choice for your next project

Frequently Asked Questions

How do I measure and choose the right size Mardome Trade Roof Light?

When ordering a dome for a pre-existing upstand, measure the external dimension. An external upstand of 600 x 600 requires a dome of at least that size.

When ordering a dome with an upstand, measure the internal hole size instead. A 600 x 600 internal hole requires a dome with a maximum size of 600 x 600.

How do I Install the Mardome Trade Roof Light?

The kerb is screwed down to the deck with suitable fixings, then weathered. Once secure, the dome is attached using the supplied self-sealing screws. A full installation guide is available under the technical data tab.

Do Mardome Trade roof lights comply with building regulations?

Yes. Mardome Trade roof lights are available in single, double and triple skin options. For Part L compliance, a triple skin unit is required.

Get Started Today

Ready to brighten your home or project? Choose Skyseal opening skylights for flat roofs for fast delivery, sleek design and outstanding thermal performance.

Order online now or get in touch with our team for expert advice and trade support.