1.5m x 4m Made to Measure Flat Roof Glass Rooflight

Bring natural daylight into a large residential or commercial space with our 1.5m x 4m Made to Measure Flat Roof Glass Rooflight.

Manufactured in Bristol to your required dimensions, this substantial rooflight is available up to approximately 1500mm x 4000mm internal frame size. Its long glazed design makes it particularly suitable for large extensions, open-plan kitchens, commercial buildings, offices, corridors and covered walkway areas.

With up to approximately 6m² of internal rooflight area, this is one of the larger sizes in our made-to-measure range and can create an impressive feature within a substantial flat roof.

Large 1.5m x 4m Made-to-Measure Glass Rooflight

Every rooflight is manufactured to order, allowing the dimensions to be selected specifically for the building and supporting roof structure.

• Maximum Internal Frame Size: Approximately 1500mm x 4000mm
• Maximum Internal Area: Approximately 6m²
• Application: Residential & Commercial Flat Roofs
• Standard Glass: Low-E Toughened Argon-Filled Glass
• Double or Triple Glazing: Available
• Self-Cleaning Glass: Optional
• Blue Tint Glass: Optional
• Welded Cills: Optional
• Guttering: Optional
• Manufactured: Bristol

Large Glass Rooflight for Extensions

The generous 1.5m x 4m maximum size makes this rooflight particularly suitable for substantial extensions and open-plan spaces where a large area of overhead glazing is required.

The long design can help distribute daylight across a larger room and can be positioned above kitchen islands, dining areas or central sections of an extension.

Commercial Glass Rooflight

The proportions of this rooflight also make it well suited to commercial flat roof applications.

Its long glazed format can provide natural overhead daylight to areas such as:

• Commercial buildings
• Offices and workspaces
• Corridors
• Covered walkways
• Reception areas
• Showrooms
• Large extensions
• Garden rooms
• Open-plan living areas

Long Glass Rooflight for Walkways and Corridors

At up to 4 metres long, this made-to-measure rooflight can be particularly useful where natural daylight needs to be distributed along a longer, narrower section of a building.

This makes it a practical option for walkways, corridors and commercial buildings, as well as larger residential projects where a long architectural rooflight is required.

Important Rooflight Measuring Information

The dimensions entered when ordering are the internal frame measurements.

The surrounding profiles are approximately 70mm wide, so approximately 70mm must be added to each side when calculating the overall external frame dimensions.

1500mm x 4000mm Rooflight Size Example

• Internal Frame: 1500mm x 4000mm
• Approx. External Frame: 1640mm x 4140mm

Optional Welded Cill Dimensions

Where welded cills are selected, additional allowance must be made for the overall rooflight dimensions.

Where the cill extends approximately 160mm from each side of the internal frame measurement, the approximate maximum overall dimensions would be:

• Internal Frame: 1500mm x 4000mm
• Approx. Overall Cill: 1820mm x 4320mm

Please carefully check all dimensions before constructing the roof opening, kerb or supporting structure.

Low-E Toughened Glass

The standard rooflight is supplied with Low-E toughened, argon-filled glass, providing a combination of natural daylight, safety and thermal performance.

Low-E glazing helps reduce heat transfer through the glass, while argon gas within the sealed units further improves thermal efficiency.

Double and Triple Glazing Options

Choose the glazing specification required for your project, with double and triple-glazed options available depending on the selected configuration.

• Low-E Toughened Glass
• Argon-Filled Sealed Units
• Double Glazing
• Triple Glazing
• Self-Cleaning Glass
• Blue Tint Glass

Self-Cleaning Glass for Large Rooflights

An optional self-cleaning glass upgrade can be particularly useful on a rooflight of this size, where accessing the external glass for routine cleaning may be difficult.

Blue Tint Glass Option

Blue tint glazing is also available where an alternative appearance to standard clear roof glazing is preferred.

Durable Roof Glazing Bar System

The rooflight uses a strong roof glazing bar system designed to support the glass and provide a durable finished roof structure.

This allows the rooflight to be manufactured to the dimensions required while providing secure support for the selected glazing configuration.

Rooflight Frame Colour Options

• White
• Rosewood
• Mahogany
• Light Oak

Aluminium roof bars are also available in selected Light Oak, Mahogany and Rosewood finishes.

Optional Hunter Regency Guttering

An optional Hunter Regency guttering system can be supplied where rainwater collection is required around the rooflight.

The guttering package can include the appropriate gutter sections, downpipes, brackets, spigots, gutter angles and connecting components for the selected configuration.

Optional Cresting and Finials

Decorative cresting and finials can be added where a more traditional appearance is required, or omitted for a cleaner contemporary finish.

Flat-Packed or Part-Assembled

• Flat-Packed: Supplied ready for assembly on site.
• Pre-Assembled to Glazing Stage: Main rooflight structure assembled before delivery, with glass and finishing trims installed on site.

Suitable assistance will be required for unloading larger or pre-assembled rooflights. Please consider delivery access and safe handling before ordering.

Made-to-Measure Commercial Rooflights Bristol

We manufacture made-to-measure glass rooflights in Bristol for homeowners, builders, developers, contractors and commercial customers.

The larger 1.5m x 4m format is particularly useful for projects requiring a long glass rooflight or substantial area of overhead glazing.

We supply rooflights throughout Bristol and the surrounding area, with delivery also available for residential and commercial projects elsewhere in the UK.

1.5m x 4m Glass Rooflight Specification

• Product: Made to Measure Flat Roof Glass Rooflight
• Maximum Internal Size: Approximately 1500mm x 4000mm
• Maximum Internal Area: Approximately 6m²
• Approx. Maximum External Frame: 1640mm x 4140mm
• Approx. Overall Cill: 1820mm x 4320mm when applicable
• Application: Residential & Commercial Flat Roofs
• Standard Glass: Low-E Toughened Argon-Filled
• Glazing: Double or Triple Glazing Options
• Glass Upgrades: Self-Cleaning or Blue Tint
• Frame Colours: White, Rosewood, Mahogany or Light Oak
• Welded Cills: Optional
• Guttering: Optional Hunter Regency System
• Cresting & Finials: Optional
• Assembly: Flat-Packed or Pre-Assembled to Glazing Stage
• Manufacture: Made to Measure in Bristol

Ordering Your 1.5m x 4m Glass Rooflight

Enter the required internal frame dimensions and select the glazing, frame colour and optional extras required for your project.

Because every rooflight is manufactured specifically for your order, please carefully check all measurements before ordering and before constructing the supporting roof opening or kerb.

Installation and Weatherproofing

Roof felt, flashing and surrounding weatherproofing should be correctly completed as part of the installation. The rooflight must be properly integrated with the supporting structure and surrounding flat roof system to provide a secure and weather-resistant finished installation.