Fenestration specification under increasing scrutiny

As regulatory requirements continue to evolve, including current Part L and the move towards the Future Homes Standard, fenestration specification is facing closer scrutiny.

For housebuilders delivering at scale, getting specification right first time is increasingly important to avoid risk, rework and uncertainty further down the line.
Veka supports practical specification support from early design through to delivery. The focus is on keeping window and door specifications clear, consistent and practical, so systems perform as expected and can be applied across multiple sites and standard house types.

Early-stage support includes Veka’s role as an NBS specification writing partner, helping project teams develop fenestration specifications that integrate into wider project documentation and remain clear as designs develop.

Specification support is further supported by WinDoPlan, an exclusive Veka platform, which allows window and door configurations and thermal performance to be assessed early in the design process.

The tool supports the evaluation of U-values in line with current Part L requirements and the direction of travel under the Future Homes Standard, and is designed to give teams a clearer understanding of system capabilities before projects progress.

Alongside digital tools, Veka provides direct technical support to help with performance interpretation, regulatory considerations and system suitability. This is backed by dedicated specification expertise working closely with housebuilders, architects and fabricators to develop clear, repeatable fenestration standards that can be applied consistently and confidently.

Veka’s specification-led approach is underpinned by independently verified conformance with the Code for Construction Product Information (CCPI) for its windows product set, providing assurance that technical information is clear, accurate and managed through defined governance processes.

Paul Kennington, technical director at Veka, said: “As expectations around building performance increase, clear and accurate specification is essential. Providing unambiguous, project-specific technical data supports informed decision-making and helps reduce risk later on site. Where performance requirements cannot be met, we communicate this openly and work collaboratively to support the project.”