HITECH Rooflights – Custom & Bespoke Rooflights Full Technical Specification
At HITECH Rooflights, we specialise in bespoke rooflights and custom rooflight solutions engineered to meet the precise demands of architectural and construction-led projects.
Every rooflight is designed, manufactured, and finished to your exact specification, whether you’re working from detailed construction drawings, coordinating with structural engineers, or resolving non-standard roof openings.
Our made-to-measure rooflights are suitable for residential, commercial, and mixed-use developments, delivering reliable performance, clean detailing, and full regulatory compliance.
Standard Specification – Triple-Glazed Bespoke Rooflight (Typical Build-Up)
While all rooflights can be fully customised, our standard triple-glazed bespoke rooflight specification has been developed to meet common architectural performance requirements, balancing thermal efficiency, structural integrity, and optical clarity.
Typical specification shown below — final build-up confirmed at quotation stage.
Triple-Glazed Rooflight Unit Construction (Typical)
|
Outer Pane – Structural Safety Glass |
6mm Clear Toughened Glass |
|
Spacer Cavity 1 – Thermal Separation |
20mm Black Warm Edge Spacer Bar (Argon Gas Filled 95%) |
|
Middle Pane – Low-Emissivity Coated Glass |
6mm Soft Coat Low-E Toughened Glass |
|
Spacer Cavity 2 – Thermal Separation |
16mm Black Warm Edge Spacer Bar (Argon Gas Filled 95%) |
|
Inner Pane – Internal Safety / Thermal Control |
6mm Soft Coat Low-E Toughened Glass |
|
Overall Insulated Glass Unit Thickness |
54mm |
This configuration provides excellent U-values, durability, and a slim visual profile, making it suitable for flat roof applications where performance and detailing are critical.
Bespoke Rooflight Customisation Options
Our custom rooflights can be adapted to suit architectural intent, structural constraints, and aesthetic requirements:
-
Bespoke sizes and shapes (square, rectangular, or shaped units)
-
Tinted, obscure, or solar-control glazing options
-
Walk-on or non-walk-on rooflight designs
-
Filmed border colour options in any RAL finish
(stock colours: white, cream, silver, grey, black) -
Optional electric blind systems
Architects: glazing specification, load requirements, and border detailing can be aligned with drawing packages and schedules.
UK Manufactured Bespoke Rooflights – Designed for Longevity
All custom rooflights are manufactured in the UK and supplied with a 20-year guarantee.
Each unit undergoes quality control checks to ensure:
-
Structural integrity
-
Thermal and acoustic performance
-
Weather resistance
-
Long-term visual clarity
HITECH rooflights are designed to integrate seamlessly with flat roof build-ups and can be coordinated alongside insulation, waterproofing, and structural systems.
All custom rooflights are manufactured in the UK and backed by our 20-year guarantee. Each unit is rigorously tested to ensure superior performance, weather resistance, and long-term clarity.
Optical Performance – Luminous Factors (CIE 015:2018)
|
Property |
Value |
|
Light Transmittance (TL) |
68% |
|
Outdoor Reflectance (RLe) |
16% |
|
Indoor Reflectance (RLi) |
16% |
High light transmission supports daylighting strategies while maintaining controlled reflectance.
Energy Performance – Glass Energy Factors (EN 410:2011)
|
Property |
Value |
|
Transmittance (TE) |
46% |
|
UV (Tuv) |
N/A |
|
Outdoor Reflectance (Ree) |
24% |
|
Indoor Reflectance (Rei) |
24% |
|
Absorptance A1 (AE1) |
9% |
|
Absorptance A2 (AE2) |
13% |
|
Absorptance A3 (AE3) |
7% |
Energy performance supports compliance with Part L requirements when integrated correctly within the roof build-up.
Solar Control Performance – Solar Factors (EN 410:2011)
|
Property |
Value |
|
Solar Factor (g) |
0.59 |
|
Shading Coefficient (SC) |
0.68 |
Solar performance can be adjusted through glazing specification to suit orientation and overheating risk.
Thermal Insulation Performance – Thermal Transmittance (EN 673:2011)
|
Property |
Value |
|
Angle relative to the vertical |
0° |
|
Ug |
0.6 W/(m²·K) |
Low Ug values contribute to improved overall roof thermal performance.
Acoustic Performance – Sound Insulation (EN 12758)
|
Property |
Value |
|
Rw (C;Ctr) |
36 (-2; -6) dB |
|
Ra |
34 dB |
|
Ra,tr |
30 dB |
|
STC (ASTM E413) |
36 |
|
OITC (ASTM E1332) |
26 |
Acoustic values support use in urban, residential, and mixed-use environments.
Custom & Bespoke Rooflight Quotation Process
Once we receive your bespoke rooflight quote request, we aim to provide a price within 24 hours.
Where required, our team will:
-
Review drawings and dimensions
-
Clarify structural or performance requirements
-
Confirm glazing specification and border detailing
Following quotation approval:
-
Final price and lead time are confirmed
-
Secure payment is made via online payment link
-
Manufacturing of your custom rooflight begins
We regularly work directly with architects, contractors, and developers to ensure smooth coordination.
Triple Glazed Rooflight
Triple Glazed Rooflight
Triple Glazed Rooflight
Triple Glazed Rooflight
A Double Glazed Stepped rooflight refers to a rooflight system that consists of two layers of glazing (glass) with a stepped or tiered design. This configuration helps in improving thermal insulation and soundproofing properties while allowing natural light into the space.
A Triple Glazed Stepped rooflight is a rooflight system with three layers of glazing, typically arranged in a stepped or tiered manner. This advanced design provides enhanced thermal efficiency, noise reduction, and can be particularly beneficial in environments where insulation and energy efficiency are priorities.
A Jack Aluminium rooflight refers to a rooflight structure made using aluminium framing known for their high-quality aluminium building components. These rooflights are durable, lightweight, and often used for their aesthetic appeal and structural integrity in modern architectural designs.
A rooflight with an integrated blind is a type of skylight that includes a built-in shading system within the glazing unit. The blind is incorporated directly into the rooflight, offering control over light levels and privacy while maintaining a sleek and modern appearance.
Clear glass is a type of glazing that provides maximum visibility and allows the most natural light to enter through the rooflight. It does not have any tint or coating, offering a completely transparent view, which is ideal for spaces where unobstructed sightlines and natural lighting are desired.
Solar Control glass is designed to reduce the amount of solar heat that passes through the rooflight, helping to keep interiors cooler and more comfortable. This type of glass often has a special coating that reflects a portion of the sun’s heat and glare, making it ideal for energy efficiency and reducing the need for air conditioning in warmer months.
Satin glass, also known as frosted or obscure glass, has a matte finish that diffuses light and provides privacy while still allowing natural light to enter. This type of glass is perfect for areas where you want to maintain privacy without sacrificing daylight, such as bathrooms or private office spaces.
Blue Active glass features a subtle blue tint that enhances visual comfort by reducing glare and improving light diffusion. This glass type not only adds a stylish touch to the rooflight but also offers benefits such as improved energy efficiency and reduced UV penetration, protecting interiors from sun damage.
Laminated glass consists of two or more layers of glass bonded together with an interlayer, typically made of polyvinyl butyral (PVB). The thickness, such as 6.8mm or 8.8mm, indicates the overall thickness of the glass layers including the interlayer. This type of glass offers enhanced safety and security, as it holds together even when shattered, reducing the risk of injury. It’s also effective in providing sound insulation and UV protection.
Please provide plan, section and elevation drawings or a DWG/PDF with exact opening dimensions, roof build-up, kerb details and any structural loading requirements. Indicate finish levels, upstand heights and insulation locations so we can ensure correct integration.
Yes — we supply NBS-style clauses, full technical datasheets and performance data (U-values, g-values, acoustic ratings) suitable for tender packages and coordination.
Our units are supplied with certified Ug and whole-unit U-values and we provide recommended kerb detailing and insulation continuity guidance to help minimise thermal bridging and support Part L compliance.
Lead times and tolerances are confirmed at quotation stage; as a guide allow several weeks for bespoke manufacture. Final dimensional tolerances and approval drawings will be issued prior to manufacture to aid installer coordination.
All bespoke rooflights include a 20-year manufacturing guarantee. We supply maintenance guidance covering cleaning, seal inspection and recommended service intervals.
