The Glass & Glazing Federation (GGF) has welcomed the UK Government’s newly published Warm Homes Plan, but is calling for urgent clarification from the Department for Energy Security and Net Zero (DESNZ) on how building fabric improvements, including windows and doors, will be supported.

The Warm Homes Plan has been described by the Government as “the largest home upgrade programme in British history”, combining major investment in insulation, low-carbon heating and renewable technologies. It also outlines universal zero or low-interest loan-style support for measures such as batteries, heat pumps and solar panels, aiming to help households cut both energy bills and carbon emissions.

While backing the overall direction of the plan, the GGF has raised concerns that current policy references to windows and doors appear limited to local authority-led and social housing funding routes. What remains unclear, the Federation says, is whether the programme will support meaningful upgrades to existing homes, particularly the replacement of ageing, inefficient glazing with modern high-performance double or triple glazing as part of a whole-house retrofit approach.

The GGF confirmed it has contacted Jessica Skillback, Director at DESNZ, within the last 24 hours to request immediate guidance on how fabric-first measures will be treated in forthcoming updates.

Chris Beedel, Head of Government Advocacy & Stakeholder Relations at GGF, said energy efficiency must begin with the building envelope, adding that windows and doors play a critical role in reducing heat loss and enabling low-carbon systems, such as heat pumps, to operate effectively.