Timber Frame is re-shaping the UK housebuilding industry
Recent developments in the housebuilding industry look set to stimulate the market for timber frame construction.
Housebuilding has proved the most buoyant sector of the UK construction industry for the past five years, its rate of growth only recently being overtaken by the infrastructure sector.
Even now, demand remains strong. Last October, in order to speed things up and help demand, the government launched a £3bn “home-building fund” – a loans programme to encourage more small to medium sized builders to focus on housebuilding.
Shortly afterwards, housing secretary Gavin Barwell announced that the government sees off-site construction as a key route to increasing building capacity. In combination with the £3bn home-building fund, this looks certain to benefit the timber frame industry since, according to the Structural Timber Association, up to 90% of all off-site systems are timber frame.
In 2015, a report from MTW Research using data from 80% of the timber frame market in the UK, found that the sector was growing at a faster rate than the UK economy*. This year, it is expected to account for more than 27% of new UK housing.
In 2014, there were 48,000 housing starts using timber frame – fast approaching the pre-recessionary peak of 51,000 in 2008.
That figure was surpassed in 2016, according to the STA’s Timber Trends Report which records double-digit growth with starts estimated at around 56,000 timber frame homes. This was the best performing year for timber frame since data began to be collected in 2002.
Currently around 60% of new homes are built by just 10 companies, most of which are geared up to build traditional brick-and-block houses. Smaller builders are more flexible and it is expected that the government’s £3bn homebuilding fund will stimulate the use of modern timber-based off-site techniques.
Total housing starts are predicted to top 200,000 by 2018, says the STA. With a worsening shortage of site skills and rising materials prices resulting from the falling value of the Pound, the larger house-builders are also likely to look more closely at timber frame.
Structural timber technology addresses many government concerns associated with the public procurement of housing. These include the speed of construction, environmental impact, energy efficiency and cost.
The materials that go into a timber frame system are generally cheaper, more sustainable and more energy efficient than traditional masonry.
For example, Norbord’s own oriented strand board, SterlingOSB, one of the most widely-used components of UK timber frame systems, is manufactured in Scotland from home-grown forest ‘thinnings’ (slender, immature trees harvested as part of sustainable forest management).
Manufactured using renewable heat from onsite biomass boilers, SterlingOSB is a sustainable, low-energy product with excellent physical performance characteristics. OSB is an essential component of all timber framed panel systems and a major contributor to their growing popularity.
Besides ‘traditional’ timber frame construction, newer timber-based off-site technologies, such as cross-laminated timber and structural insulated panel systems (SIPS), are strengthening timber’s share of the housebuilding market.
The benefits of these systems, being comparably lower energy intensive and emission producing in their manufacture and possessing greater thermal efficiency in their use, is helping to support their specification in the timber frame market.
*UNECE Timber Forecast – September 2016