Blending Tradition with Innovation: A Sustainable Edwardian Cottage Renovation in Saffron Walden

Modernising Historic Homes with a Sustainable Focus

Modernising traditional buildings can be challenging. But with the right choice of windows and doors, even historic properties can become significantly more sustainable and environmentally friendly.

The owners of Rakefriars Cottage in Saffron Walden, Essex, wanted to renovate their period home not only to create more usable space, but also to improve its energy efficiency.

Balancing Heritage and Modern Needs

It was essential to the client that the windows and doors reflected both their needs and the character of the building. Both we and the client were committed to preserving the cottage’s heritage.

We worked closely with architect Norton Studio and contractor Ekins to supply Rationel windows and doors that didn’t just meet the brief – they exceeded it.

Reimagining the Edwardian Layout

This Edwardian cottage was originally a modest two-up, two-down layout with a downstairs bathroom. That setup no longer suited the needs of Lesley, the owner.

The renovation required en-suite bathrooms for the upstairs bedrooms, along with a more open and spacious living area, including an open-plan kitchen.

Designing for Energy Efficiency

Improving the building’s overall energy performance was a key objective. The main challenge was to modernise the layout and comfort of the cottage while retaining its original character.

The Role of the Extension

Architect Adam Grant proposed a two-storey side extension – this created space for en-suites for the bedrooms upstairs.

Downstairs, the extension added a generous porch. The existing ground-floor bathroom was reconfigured into a shower room. This freed up space for a larger kitchen and an open-plan living area.

A Sustainable Approach to Building

Throughout the planning and design process, sustainability remained a priority. The extension was designed to complement the historic cottage using traditional flintwork, alongside modern, eco-friendly materials such as wood fibre insulation.

Traditional building methods, including lime-based renders, were also used. All materials were breathable and natural to promote the long-term health of the building while meeting modern environmental standards.

Upgrading Windows and Doors

A key part of the renovation was the replacement of all windows and doors. Lesley chose the Rationel FormaPlus range: triple-glazed, aluminium-clad timber units finished in RAL 9010 (pure white).

These offer excellent thermal performance with minimal maintenance. The traditional styling of the windows and doors suits the character of a British cottage.

The addition of classic glazing bars adds timeless charm, particularly to the new patio doors at the rear of the property.

Supporting Local Wildlife

The build’s sustainability credentials extended beyond materials. Bee bricks and swift boxes were included in the extension to support local wildlife – an approach that aligns closely with okoHaus’s own support for the Suffolk Wildlife Trust.

These subtle features reflect the homeowner’s broader commitment to environmental responsibility.

Supplier Insight

John Lewis of okoHaus, who supplied and installed the windows and doors, shared his thoughts:

“We love working with Rationel products because they offer the perfect balance of cost, low maintenance, and high performance. The U-values are excellent, and the reliability means very few after-sales issues. Our experience with specifying and fitting Rationel allows us to complete projects smoothly and to a very high standard.”

Honouring the Past, Building for the Future

Thanks to a sensitive design, careful planning, and the use of high-quality materials, this historic Edwardian cottage has been transformed into an energy-efficient and comfortable home.

It now meets modern needs while honouring its original charm.

Rakefriars Cottage is a strong example of how thoughtful renovation can enhance sustainability while respecting the heritage of traditional buildings.

About the Rationel FormaPlus Range

The Rationel FormaPlus range combines the beauty of timber with the durability of aluminium cladding. Its triple glazing delivers exceptional thermal performance, and its design suits both modern and period homes.

Interested in the Rationel FormaPlus Range?

If you'd like to explore whether the Rationel FormaPlus range is the right fit for your new build or renovation, please get in touch. We'd love to hear from you.