Full Fill Built-in Insulation for Traditionally Built Walls 'Traditional wall construction to Zero Carbon targets - leave it to me' '.xtratherm.com More than insulation

‘ FEES gives me the targets to work too. CavityTherm gets me there!’ Why CavityTherm? Building to the 2013 regulation standards, Code for Sustainable Homes or looking towards Zero Carbon? CavityTherm in a traditional brick wall will get you there! Zero Carbon fabric standards for 2016 have been set by Government. They have been defined under the ‘Fabric Energy Efficiency Standard’ (FEES) that has now been incorporated into The Code for Sustainable Homes. It will also be included in the revision of Part L Regulations 2013. Zero Carbon CavityTherm built into a traditional 100-125mm cavity using...

What is CavityTherm? Xtratherm CavityTherm wall insulation board is a high performance composite board of enhanced PIR core with a lambda value of 0.021W/mK. The boards have gas tight facings with one face bonded to a profiled HIPS skin during manufacture to provide a drainage plane. CavityTherm’s unique engineered profiled facing directs any moisture that might penetrate the external wall down the protective facing and back onto the external leaf, giving added protection from wind driven rain. The board includes specifically designed rebated edge detailing on all four edges to allow the system...

The Affordable Solution Apart from the practical reasons for maintaining the traditional cavity width, there are also cost implications that must be considered when the decision has been taken to widen a cavity over 150mm. There are cost implications that must be considered when the decision has been taken to widen a cavity to insert a greater thickness of insulation. In the publication issued by the Zero Carbon Hub, ‘Defining a Fabric Energy Efficiency Standard for zero carbon homes Appendix D Cost analysis’, the cost involved in increasing a wall cavity from 85mm to 210mm added an additional...

The Practical Solution CavityTherm built into a traditional 100-150mm cavity using traditional foundation, building skills and materials achieves U-values down to 0.12W/m2K. A practical, affordable solution to low energy design, that results in traditional, desirable homes. You design your homes to a high standard, they are homes that people want, the traditional look, using the skills and materials that are familiar to you and your customers. With the skills of the traditional builder, attention to detail and CavityTherm from Xtratherm, we’ve got it sorted! CavityTherm is proven to provide the...

The Technical Solution Building to 2013 standards, Code level 4 or 5 or looking towards 2016 and Zero Carbon in a traditional brick wall with a reasonable cavity width CavityTherm, will get you there! The Fabric Energy Efficiency Standard (FEES) The UK Government formed a task group under the title of the ‘Zero Carbon Hub’ to develop a strategy towards the 2016 zero carbon homes requirement. As part of that strategy a Fabric Energy Efficiency Standard was developed that set the performance levels for the building fabric that would reduce the amount of energy required to heat a home and reach...

Thermal Bridging A major factor in the performance of the building fabric is not simply the amount of insulation you install, but how it interconnects with other components and the other insulated elements within the design. Semi-Detached House - TER 18.24 Total Envelope Area = 190.580 Which details to use? Junction Detail Ground Floor Intermediate Floor Corner (normal) Corner (inverted) Ceiling (insulation at eases) Ceiling (insulation at gables) Party Ground Floor Party Wall (imtermediate floor) Party Ceiling (insulation at ceiling) Y-Value (L x Y / total area) *Ψ Based on Lightweight Block...

The Desirable Solution The traditional, tried and tested method of building walls in the UK is cavity construction. The brick and block sourced locally, and built using skills passed down from father to son to build houses that are lived in by those same families for generations – it’s traditional. The conundrum was to keep that tradition and bring the thermal performance of the cavity wall up to Zero Carbon Standards. With the skills of the traditional builder, attention to detail and CavityTherm from Xtratherm, we’ve got it sorted!

‘ With CavityTherm I get the technical support I want when I need it’ FAQ’s Q. What is CavityTherm? Xtratherm CavityTherm wall insulation board is a high performance composite board of PIR core with a lambda value of 0.021W/mK. The boards have gas tight facings with one face bonded to a profiled HIPS skin during manufacture to provide a drainage plane. CavityTherm’s unique profiled facing directs any moisture that might have penetrated the external wall down the protective facing and back onto the external leaf. The board includes specifically designed rebated edge detailing on all four edges...

Installation Guide The Xtratherm CavityTherm System can be installed by competent, traditional brick /block layers. The engineered jointing of the components makes installation easier and ensures the continuity of the insulation layer. Start with the inner leaf of the wall to least 450mm above the foundations to allow at least a 150mm over lap with the floor insulation. Install the first row of boards, allowing for the floor insulation overlap, supported by at least 2 wall ties per board. Boards should be installed with the tongue upper most and the profiled face outer most. Fig 1 Wall tie sloping...

Corners Internal & external corners can be formed on site by either butt jointed or mitred methods. Preformed corners are also available from Xtratherm. Internal corner details External corner details Butted Junction Remove the end profile from the abutting board and fit tightly against the flattened surface of the first board. This pattern should be repeated with subsequent lifts repeating the position of the first board tight against the return wall. Alternate boards should be cut to different lengths to create a brick bonded pattern. Damp proofing at lintels and sills should be provided with...