Deliver Retrofit Outcomes Without Replacing Windows

Flutter Shutter™ helps housing providers improve thermal performance across their stock without the cost, disruption, or planning challenges of full window replacement.

By combining a transparent thermal roller blind with a plantation shutter, it delivers thermal performance comparable to triple glazing, working with the windows you already have.

It is UK patented, independently tested, and built to support large-scale retrofit and decarbonisation programmes.

Recognised, Tested, and Certified

For asset management and procurement teams, evidence matters. Flutter Shutter™ is supported by independent testing and recognised industry accreditation, so that you can specify it with confidence.

DESNZ Technical Note

Flutter Shutter™ is recognised in the relevant DESNZ Technical Note

SAP Recognition and RdSAP Compliance

Following BRE testing, Flutter Shutter™ has been awarded a SAP Rating and U-Values that deliver a measurable increase in a property’s EPC rating.

These figures are recognised within RdSAP, giving you a clear, modelled improvement that can be fed directly into your retrofit assessments and lodgements.

PAS2030 and TrustMark

Flutter Shutter™ is installed under PAS2030 certification and is TrustMark registered. This means installations meet the standards expected within funded retrofit schemes and offer the consumer protection and quality assurance your residents deserve.

Warmer Homes Schemes and Wales ORP scheme

Warm Homes Plan (England)

Flutter Shutter™ has been approved for use within the Warm Homes Plan, the Government’s programme to cut energy bills and upgrade homes across England. This approval supports housing providers seeking to deliver meaningful thermal improvements within a recognised, funded framework.

Optimised RetroFit Programme — ORP (Wales)

Flutter Shutter™ has also been approved under the Welsh Government’s Optimised RetroFit Programme, a whole-house, evidence-led approach to decarbonising existing homes. This makes Flutter Shutter™ a viable measure for housing providers operating across Welsh stock under ORP-funded delivery.

Built for Retrofit at Scale

Replacing windows across a portfolio is expensive, slow, and often impractical, particularly when the stock includes period or protected buildings. Flutter Shutter™ takes a different route.

Because the system fits internally and leaves existing windows in place, it is well-suited to large programmes where speed, cost control, and minimal disruption are essential.

Installation is clean and contained within the room, with no scaffolding, external works, or window removal.

Residents can remain in their homes throughout, and your teams can deliver measurable outcomes across many properties without lengthy void periods.

Suitable For

Housing Associations

Registered Social Landlords

Local Authorities

Retrofit Programmes

Decarbonisation Projects

The Benefits

  • Improve EPC ratings

    A BRE-awarded SAP Rating and U-Values support a stronger energy performance score across your stock.

  • Reduce heat loss

    The thermal roller blind traps an insulating layer of air between the glass and the blind, slowing heat loss that drives up demand.

  • Save tenants money

    Lower heat loss means lower bills, helping you address fuel poverty and improve resident outcomes.

  • Comparable to triple glazing

    Independent testing confirms thermal performance in line with modern glazing, without replacing a single window.

  • Address overheating

    Adjustable plantation shutters provide effective solar shading, helping manage summer overheating in line with growing climate resilience requirements.

  • Complies with Approved Document F

    Because the system is non-intrusive and tenants retain full use of their windows, ventilation provision can be maintained in line with the requirements of Approved Document F.

  • Preserve heritage stock

    With no change to external appearance, Flutter Shutter™ is ideal for conservation areas and listed properties, subject to the necessary approvals.

  • Minimise tenant disruption

    Internal installation with no window removal keeps homes livable and programmes moving.

A Proven, Practical Choice

Window replacement is rarely the most efficient route to better thermal performance, especially across mixed and ageing stock.

Flutter Shutter™ offers a recognised, evidence-led alternative that improves comfort, supports EPC uplift, and helps you meet decarbonisation targets, all while keeping costs and disruption to a minimum.

Our team understands the demands of social housing retrofit, from funding compliance to resident liaison, and we will support you at every stage of specification and delivery.

Government Funding Opportunities

Flutter Shutter™ may be suitable for inclusion in various retrofit and energy-efficiency programmes, subject to scheme requirements and eligibility.

Flutter Shutter™ is installed under PAS2030 certification, is TrustMark registered, and holds a BRE-awarded SAP Rating recognised within RdSAP, it is well positioned for consideration within funded retrofit and decarbonisation initiatives.

Eligibility, available routes, and the level of any support will always depend on the specific scheme, the property, and the wider package of measures proposed.

Our team can talk you through how Flutter Shutter™ might fit within your current and planned programmes, and provide the evidence, U-Value data, and documentation needed to support your funding and compliance requirements.

Flutter Shutter™ holds approval under two government-backed schemes:

  • Warm Homes Plan – Supporting housing providers in delivering thermal improvements within a recognised, government-backed framework.
  • Welsh Government’s Optimised RetroFit Programme – Making it a viable measure for housing providers delivering ORP-funded retrofit.

Get in Touch

Find out how Flutter Shutter™ can support your retrofit and decarbonisation programme. Request validity reports, U-Value data, and the DESNZ Technical Note, or arrange a survey across a sample of your stock.