INSULATION
time for design changes to meet individual client requirements. Frame systems are erected onsite very quickly, but there is still much work to be done before they reach the same stage of completion as an ICF building, since insulation, membranes, sheathing and sealing for airtightness, still have to be completed.
So, you have a strong, durable, energy efficient ICF home which will counter the effects of climate change, but is it sustainable? What about the carbon footprint?
Overall, it is estimated that the energy
required to manufacture and build an ICF house is recovered in around 11-13 years of its occupation. Given that the anticipated useful life of an ICF home is considerably longer than alternative methods of construction, this leaves a very small carbon footprint – and the materials can always be recycled for a new generation of homes.
formwork construction.
A successful concreting operation is the proof of any formwork system. This may be completed in several stages, filling small sections of wall at a time, but most projects hire a pump to handle the heavy weight of the concrete which is to form the building structure. In a very short
space of time an entire storey height pour can be completed, with temporary propping to hold the formwork in position until the concrete has set. The speed of construction for ICFs is much the same as for offsite frame systems, except ICF delivery lead times are much shorter, allowing much more
As building standards are upgraded to counter the impact of climate change, the economics of construction will increasingly favour ICF systems that are already proven and available as a versatile solution for the self-builder and new homes.
Robin Miller is MD at Beco Wallform
ICF Supplies is an authorised distributor for Nudura products.
Nudura’s Insulating Concrete Formwork uses polystyrene connected with a web system that allow the forms to be stacked and steel reinforced. The polystyrene forms are then built up on site and filled with ready-mixed concrete. This system provides a thermal mass, allowing structures to be heated and cooled more effectively.
www.icfsupplies.co.uk 01268 542748
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www.sbhonline.co.uk july/august 2019
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