To protect grow our Members Towards

To protect & grow our Members … Towards Zero Carbon FRAMED BUILDINGS Bryan Woodley Chief Executive UK Timber Frame Association

To protect & grow our Members … Framed Buildings Background Strategy Code for Sustainable Homes Addressing the Key Factors Current Status The Learning Outcomes

To protect & grow our Members … Timber Frame UK Market Share of New Housing 14% England & Wales Timber Frame Market Share

To protect & grow our Members … Growth of Timber Frame Units by Category

To protect & grow our Members … Background Energy Review & Legislative Drivers Sustainable Buildings Task Group Code For Sustainable Homes Real Improvements in: Ø CO 2 Emissions Ø Water Use Level 1 – Just Above 2006 Building Regulations Level 6 – “Net Zero Carbon” Fiscal Incentives – Stamp Duty

To protect & grow our Members … Framed Buildings - Strategy Sustainability Ø Ø Climate Change Net Zero Carbon Affordability Ø Ø Ø First time buyers Key workers Demographic aspects Homes that People Want to Live In

To protect & grow our Members … Tomorrows World 32 vs 20 Sockets Per Household 80 Litres of Water / Person / Day 4. 4 m Single Person Households More Extended / Elderly Families Sustainable Urbanism Daily needs within 5 minute walk Ø Mixed income/use neighbourhoods Ø Physically defined & accessible public spaces, etc. Ø

To protect & grow our Members … Framed Buildings – Net Zero Carbon The Code for Sustainable Homes: 9 Assessment Categories 6 Different Ratings Building Regulations Timeframe

To protect & grow our Members … Framed Buildings – Net Zero Carbon The Code for Sustainable Homes: 6 Different Ratings CO 2 (% imp) Water (l/p/d) 1(*) - 10% - 120 2(**) - 18% - 120 3(***) - 25% - 105 4(****) - 44% - 105 5(*****) - 100% - 80 6(******) - zero carbon - 80

To protect & grow our Members … Framed Buildings – Net Zero Carbon The Code for Sustainable Homes: Building Regulations Timeframe Year CO 2 (% imp) Rating 2008 - 10% 1(*) 2010 - 25% 3(***) 2013 - 44% 4(****) 2016 - zero carbon 6(******)

To protect & grow our Members … Framed Buildings – Net Zero Carbon The Code for Sustainable Homes: 9 Assessment Categories - Energy/ CO 2 - Water Minimum standards at each code level - Materials - Surface water run off - Waste Minimum standards at code entry level - Pollution - Health/ well being - Management - Ecology No minimum standards

To protect & grow our Members … Addressing the Issues - Energy / C 02 Twofold strategy: 1. Maximise building fabric performance standards 2. Then offsetting emissions using microrenewables

To protect & grow our Members … Energy / C 02 - Walls (U-values) 0. 35 W/m 2 K - minimum Building Regulations 0. 30 W/m 2 K - standard 140 mm stud + basic insulation 0. 27 W/m 2 K - standard 140 mm stud + better insulation 0. 25 W/m 2 K - above + reflective breather membrane 0. 21 W/m 2 K - above + reflective vcl + service void (generic) 0. 15 – 0. 14 W/m 2 K - advanced versions of above (proprietary) 0. 11 W/m 2 K - high performance sips (proprietary)

To protect & grow our Members … Energy / C 02 - Building Envelope High performance walls, floors, roofs Windows 0. 7 W/m 2 K (incl. wooden frame) triple glazed, gas filled Heat Load Parameter (U-Value for the whole building) = 0. 8 W/m 2 K or better (SAP) Key factor to achieve 6 stars under the Code

To protect & grow our Members … Energy / C 02 - Air leakage ‘Reasonable Limit’ of 10 m³/(h. m²) in BR’s Standard timber frame 5 - 8 m³/(h. m²) < 5 m³/(h. m²) – detail attention to vcl < 2. 5 m³/(h. m²) – service zone 1 m³/(h. m²) for Code 5 & 6 Mechanical ventilation with heat recovery Ø Lighthouse 88% heat recovery

To protect & grow our Members … Energy / C 02 - Overheating 70% of developed world lives in TF homes Consideration of solar gain & ventilation BRE study - standard modern masonry, steel & timber frame have similar thermal mass Thermal mass - passive & active Oak Ridge National Laboratory research: Ø Good contact with building interior Active phase change material Install as 8 mm panels behind pboard Reduces temperature peaks by up to 7 o. C

To protect & grow our Members … Minimising Summer Heating Large secure ventilation openings that occupants feel safe leaving open at night and away from home Modest sized windows Solar shading, with future upgrade sufficient to stop 90% of direct solar gain Low energy appliances (hence low heat emitting) ‘Thermally heavyweight’ room surfaces to absorb daytime heat gains and provide natural cooling Purge ventilation to remove at night the heat absorbed by the room surfaces during the day

To protect & grow our Members … Offset Emissions - Micro- Renewables Solar hot water panels Photovoltaic panels – Lighthouse: 4. 7 k. W Wind turbines – 3 on Sigma House Automatic wood pellet boiler Wood pellet store 3 wind turbines 4 solar hot water panels 17 m 2 photovoltaic panels

To protect & grow our Members … Materials – Category 3 Mat 1 – materials with lower environmental impact Ø Ø Green Guide rating Roofs & walls at A+ rating & walls at A rating Credits of 10 = 2. 7 Code point score Windows A or A+ rating = total 13 = 3. 6 Code points Mat 2 - responsible sourcing Ø Ø Ø Timber certified responsibly sourced Tier 1 FSC & PEFC for 4 out of 8 areas Max 3 points per element = 12 = 1. 2 Code points

To protect & grow our Members … Health & Well Being – Category 7 Daylight Sound insulation Private space Lifetime Homes

To protect & grow our Members … Category 7 - Sound Insulation Party Walls Ø Ø Ø Stewart Milne Sigma House Conventional RD party wall construction Addition of 25 mm and 50 mm service voids Enhanced acoustic performance 8 d. B uplift on Part E Maximum credits

To protect & grow our Members … Category 7 - Sound Insulation Floors Ø Ø Stewart Milne Sigma House Separation of Live/Work Unit Slotted joist technology Acoustic separation Floor and ceiling Ø Ø Ø Factory installed insulation Integral 109 mm service void Candidate Robust Detail

To protect & grow our Members … Assessment Process Environmental Impact Categories No of Credits in Category Stewart Milne Sigma House Credits Category 1 – Energy/CO² Category 2 – Water Category 3 – Materials Category 4 – Surface Water Run-off Category 5 – Waste Category 6 – Pollution Category 7 – Health and Well being Category 8 – Management Category 9 – Ecology Total 29 credits 6 credits 24 credits 7 credits 4 credits 12 credits 9 credits 104 credits 26 5 20 4 6 4 10 6 4 84 credits Design Stage Assessment Post Construction Review Evidence based assessment

To protect & grow our Members … Stewart Milne - The Sigma House A pair of 4 storey, semi open plan terraced town houses, with a split level interior Achieves a 5*/6* Code rating Near zero carbon emissions 100%+ performance improvement over Building Regulations Integrated micro- renewables High density family housing Flexible interior spaces Closed timber frame panels and steel framed bathroom pods

To protect & grow our Members … Kingspan Lighthouse The world’s first Level 6 Net-Zero Carbon House. The sweeping roof envelopes the central space which is a generous, open plan, top lit, double height living space with the sleeping accommodation at ground level The living space uses a timber portal structure Uses Kingspan TEK system with U-values of 0. 11 W/m 2 K & air permeability of 1 m 3/h/m 2 Technology includes mechanical ventilation with 88% heat recovery, photovoltaics, automatic wood pellet boiler & solar hot water panels Water reduction is achieved with low usage showers, water labelled A++ white goods, greywater recycling, etc. A smart meter records energy consumption

To protect & grow our Members … Current Status Framed buildings provide a basis for the Code Levels 1*, 2* & 3* can be delivered now with limited change to current best practice Code Levels 4*, 5* & 6* can also be produced now but require challenges to the current approach and mindset The more demanding Levels involve an increasing cost premium ~ 40% for Level 6

To protect & grow our Members … The Learning Outcomes Challenging current approach and mindset Early supplier integration is key Management of micro energy supply Focus on the customer Cost of technology and new components & materials Ability to manage change

To protect & grow our Members … Any questions or comments please? Thank you for your attention Bryan Woodley Chief Executive UK Timber Frame Association