Why Timber is Key to Achieving Net Zero in UK Construction

Emily Woosey
March 31, 2025

The construction industry is at a pivotal moment as the UK pushes towards its ambitious net zero carbon emissions target by 2050. At the forefront of this transition is the urgent need to rethink building methods and materials. Among the most promising solutions is timber construction, a sustainable alternative that significantly reduces carbon emissions compared to traditional building practices.

Andrew carpenter discussing timber construction

The Carbon Challenge Facing UK Construction

The scale of the challenge is vast—construction activity contributes between 25% and 40% of the UK’s total carbon emissions. Without transforming how we build, reaching net zero is impossible. Materials like concrete and steel are major carbon emitters during production, prompting the UK government to back alternative approaches.

One such response is the Timber and Construction Roadmap Implementation Programme. This strategic initiative aims to increase the use of low-carbon materials like timber across the construction sector. Although paused briefly during the general election, the programme is now regaining momentum under the Labour government, which has expressed strong support for accelerating the transition. The goal? Delivering 1.5 million new homes while boosting sustainable construction practices.

Why Timber Construction is a Game-Changer

1. Lower Carbon Footprint

Timber is a renewable, carbon-storing material. Using it in place of concrete or steel can drastically cut emissions across the building lifecycle.

2. Cost and Time Efficiency

Contrary to common misconceptions, timber frame construction is not more expensive than traditional masonry. In fact, studies show:

  • 1.1% reduction in construction costs
  • 2.8% overall cost savings
  • 19.5% faster build times

This speed is crucial for developers and housing associations aiming to house residents quickly and start generating income sooner.

3. Improved Thermal Performance

Timber frame buildings offer better thermal efficiency, leading to lower energy bills—a huge advantage in today’s high energy cost climate.

4. Increasing Industry Adoption

Major UK housebuilders are already embracing timber, acquiring or building offsite timber frame factories to bring this method in-house and streamline supply chains.

 

Addressing Timber Construction Concerns

Fire Safety

Fire safety has long been a concern, particularly for buildings over two storeys. However, with proper design and adherence to current building regulations, timber frame structures are safe. Regulations currently allow timber buildings up to four storeys (11m) without special conditions, and buildings between 11–18m can proceed with fire engineering assessments.

Notably, timber buildings of 10 storeys or more already exist in London and across Europe.

Supply Chain & Homegrown Timber

Most structural timber currently comes from Sweden, Scandinavia, Germany, and Austria, with Swedish timber dominating imports. While increasing homegrown timber supply in the UK is a long-term goal, industry experts are confident that supply will scale to meet rising demand.

A Cultural Shift in UK Construction

Timber construction isn’t just a technical or environmental shift—it’s a cultural one. Scotland builds around 90% of homes using timber frame, while England lags behind at just 10–12%. This disparity often stems from outdated ideas about the "ideal English home" being brick-built with a chimney, rather than practical or environmental considerations.

To successfully meet net zero goals, the industry must move beyond tradition. Collaboration across supply chains, early manufacturer involvement, and lean, waste-reducing processes will be vital.

Setting the Standard: Quality Assurance

Quality assurance remains key during this transition. Industry initiatives like STA Assure are setting the benchmark for safe, reliable timber construction in the UK, giving developers and residents confidence in this building method.

The Time for Action is Now

With strong government support, environmental urgency, and proven cost and efficiency benefits, the time to embrace timber construction is now. As industry leaders put it “The opportunity of a lifetime must be grasped in the lifetime of the opportunity.”

Watch the full episode here




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