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ICF Tech - advanced construction technology

Call us on 01773 850920



8 Nov 2011

The tough thermal requirements of SAP 2009 put insulating concrete form (ICF) wall systems from ICF Tech into pole position for the delivery of energy efficient, low and zero carbon homes.

Architects, builders and developers challenged with meeting SAP 2009 will benefit from using the UK designed and manufactured ICF Tech systems as their design already incorporates characteristics and features that surpass the assessment procedure’s rigorous thermal demands.

With build methods such as brick and block, under SAP 2009, party wall cavities must to be sealed and filled to achieve the highest ‘zero’ U-value level – unlike the automatic 0.0 U-value assumption under SAP 2005.  Using ICFs eliminates this issue completely as it is monolithic by nature and insulated on both sides of the concrete cavity – thus achieving the 0.0 U-value with ease.

Additional ICF advantages are delivered in relation to the thermal bridging calculations required by SAP 2009.  ICF Tech has modelled all the important junctions to determine a psi value for each one.  This enables a true Y-value for the development to be determined by using a Design Y value (psi x linear length of junction) to achieve an exceptional value as low as 0.012 for detached homes.

The inherent characteristics of ICF construction also offer the thermal mass benefits of heavyweight construction and a greatly reduced risk of summer-time overheating which SAP 2009 aims to identify.  This is due to ICF’s excellent ‘decrement delay’ - the time (in hours) that a structure stops the passage of heat from the outside to the inside.  Figures of between 8 and 12 hours are considered optimum, but ICF Tech’s system achieves 9 hours which compares extremely well with the 3 hours expected of some timber frame systems.

ICF Tech’s director Malcolm Howorth says, “SAP 2009 is a far more comprehensive and accurate assessment of a dwelling’s thermal performance and it brings build methods sharply into focus.  Some long-standing approaches will need a rethink to meet the new criteria, as well as some MMCs.

“In being able to offer assurances to meet the highest standards under SAP 2009, ICF Tech is once again demonstrating its outstanding suitability for building the latest generation of modern homes – making life easier for architects, builders and developers.”

Find out more about ICF Tech systems.