
Introduction
Thank you for taking the time to talk with me about your project. Based on our conversation, I’ve put together this report to reflect what matters most to you. Inside, you’ll find examples of the systems we discussed, how they would work in your space, and what you can realistically expect in terms of performance and cost.
When you’re ready, you can book a TEAMS call with me and I’ll walk you through everything step by step.
1. Your Key Area
- Rear Extension Roof Lantern
- Bi-fold side glazing to consider at a later date. This article gives a good idea of what can be achieved Electric Blinds After the Build: How to Still Get A Premium Finish – WindowTreat
2. Your Key Priorities
- Priority 1: Excessive Summer Heat Gain
- Priority 2: Excessive Brightness
2. Your Key Preferences
- Preference 1: No visible cords
- Preference 2: No rippling of the fabric
- Preference 3: Performance
- Preference 4: Mains powered motor on Roof blind and battery for bi-fold doors
3. Your Roof Lantern Size
- Width: 2700mm
- Length: 3600mm
4. Your Bi-Fold Window Size
- Width: 6000mm
- Length: 2100mm
4. Available Blind Systems At This Size
- Twin Athena
- Hercules XL
- Honeycomb SKY
Twin Athena Electric Roof Blinds
- Two Athena Systems meeting in the middle
- 3 times more fabric tension than Constant Tension Systems delivering flatter fabrics
- No visible cords across the structural opening
- Size parameters of 3m x 6m or 2.5m x 9m
- Headbox 125mm wide x 105mm tall or 145mm wide x 125mm tall
- Side profiles 54mm
- Motors 35 decibels each
- Dimensionally Stable Roller Fabrics that deliver on performance
- Compatible with Somfy Tahoma Hub and automated sun sensors
- Only the Toughest Fabrics Earn a Place in Athena Electric Roof Blind Systems – WindowTreat



Hercules XL Electric Roof Blind
- Over 8 times more fabric tension than Constant Tension Systems delivering much flatter fabrics
- No visible cords across the structural opening
- Size parameters of 4m x 5m or 4m x 7.5m
- Headbox 125mm wide x 125mm tall or 200mm wide x 145mm tall
- side profiles 80mm
- Motor between 47 and 54 decibels depending on loadings
- Dimensionally Stable Roller Fabrics that deliver on performance
- Compatible with Somfy Tahoma Hub and automated sun sensors


Honeycomb SKY electric roof lantern blind
- Lightweight system using 25mm cellular fabric
- Parameters of 3000mm wide by 5000mm long
- No visible cords within 1500mm wide by 3400mm long
- Fabric choice Dimout or Blackout
- Transformer 251mm x 30mm x 16mm required or Battery Solar Powered
- 25mm trim
- Available in White, Black or Anthracite Grey as standard

Honeycomb SKY Cording at this width

Honeycomb SKY Fabric options
Control Options
- Somfy Tahoma Hub & Smart Phone App (compatible with motors above)
- Automated sun sensors
- Alexa voice control
- Remote Control Handsets
This combinations offers you the best of touch & voice control and the option of sun automation

Costs
Based on your roof glazing sizing, chosen systems and preferred fabrics. Costs can be subject to survey
- Twin Athena electric roof blinds £5,785 inclusive of VAT and touch control device
- Hercules XL electric roof blind £6,790 inclusive of VAT and touch control device (specialist fabrics up to £700 extra)
- Honeycomb SKY electric roof blind £1,750 inclusive of VAT and touch control device
- Manufacturing Survey £650 inclusive of VAT
- Installation Labour team per day £1250 (allow one day)
- Somfy Tahoma Hub / App Free Gift From WindowTreat
- Sun Sensor £120
Example Solution Total costs = £7,805 inclusive of VAT for the survey and installation of a Twin Athena electric roof blind system including touch control device and sun sensor.
Bifold Electric Window Blinds with Fascia

Scope for Bi-fold window blinds
- 3no 2000mm x 2100mm Battery Somfy Powered blinds
- White Aluminium Bottom Bar
- 1no 120mm White Fascia 6000mm wide
- Performance Screen fabrics with up to 73% solar reflectance
- 4no colours. White, Beige, Grey & Black with variations such as Aluminium Backed, PureView White, Openness Factors 1%, 3% & 5%
- Cost range £2750 to £3000 inclusive of VAT
- Installation costs £1250 inclusive of VAT
- Survey – to be completed at the same time as electric roof blind or £650 inclusive of VAT as stand alone.


Marketing Scheme Discount
- £300 for electric roof lantern blind
- £200 for bi-fold window blinds
You have the option to take part in our marketing scheme. In return for the £300 discount on your electric roof lantern blind, we ask for a video conversation with Steve, our General Manager, along with multiple photos or videos (sent via We Transfer) of your finished installation that we can use for marketing.
This helps future customers understand our solutions and gives Steve valuable insight into how we can continue to improve our service. Your feedback plays a real part in shaping the experience for the next homeowner.
Next Steps
You now have a clear understanding of the right systems and investement costs. The next step is yours.
You are welcome to join me on a TEAMS video call. I can take you through this solution in more detail, answer your questions, address any concerns and potentially look at alternative options if need be.
Available times are shown in my diary at the end of this article.
Supporting Links
The Journey To Your Electric Roof Lantern Blind – WindowTreat
Most Roof Lantern Blinds Sag. Here’s Why.
How much do electric roof lantern blinds actually cost? (No hidden surprises) – WindowTreat
Athena Roof Blind Systems
Only the Toughest Fabrics Earn a Place in Athena Electric Roof Blind Systems – WindowTreat
Sally’s Cheltenham Success Story: The Athena Electric Roof Lantern Blind – WindowTreat
Hercules XL Roof Blind System
Success Story: Kathryn’s Hercules XL Roof Blind Transformation – WindowTreat
How Claire Transformed Her Orangery with Hercules – WindowTreat
Jay | Hercules Electric Roof Lantern Blind | WindowTreat
Wide Electric Blinds
Electric Blinds After the Build: How to Still Get A Premium Finish – WindowTreat