INSULATION 47
Icynene is an open-cell foam with outstanding thermal insulation which allows the building to breathe.
l
Ltd, applied Icynene’s Foam Lite LDC 50 to a thickness of 100mm to all walls and 125mm to the pitched roof areas, achieving U values of 0.32 and 0.29 respectively. Foam Insulations completed the spraying in one day – fitting in with the tight construction programme required for the wider restoration work. To satisfy the Conservation Officer require-
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ments, Datum Point Construction stapled a physical breather membrane to the inside of the timber cladding and original posts so that, if any repairs are need to the timber cladding or frame at a later date, it would be easier to separate the from the foam to undertake any required repairs or replacements. Icynene Foam Lite is a spray applied system
that expands instantly on application. It’s specif- ically designed to get into difficult to fill areas where traditional insulation materials just don’t work. It closes off gaps and holes, reducing air
leakage, but because it has a soft, yielding texture, it puts only minimal pressure on the building structure. According to Icynene, air leakage is responsi-
ble for up to 40% of a buildings heat loss and the system’s ability to close off small structural gaps and service holes, creating a near “sealed box” environment, makes it one of the most efficient and cost-effective means of heat-loss mitigation in a building. Icynene also points out that, unlike urethane
foams of 20 years ago, modern spray foams like Foam Lite use water as the blowing agent. The reaction between the chemical components produces CO2
cured and is completely inert. Restoration work on Old Mill Barn began in
September 2018 under the direction of Richard Pedlar Architects of Ware, Hertfordshire and followed a year-long consultation process to achieve the necessary approvals. According to Paul Adams of Datum Point
which causes the foam to expand.
As the foam expands the cells burst and the CO2 is replaced by air. As a result, Foam Lite has a global warming
potential [GWP] of 1 [One] and an ozone deple- tion potential [ODP] of 0 [Zero]. Furthermore, Icynene does not emit any harmful gasses once
Construction, “The sensitive and detailed restoration of Old Mill Barns generated a huge amount of attention - so much so that the project has been nominated by Hertfordshire Building Control for the LABC [Local Authority Building Control] Excellence Awards, competing in the category: Best change of use of an existing building or conversion” The LABC Awards will be presented at the Guildhall London In May 2019.
https://www.youtube.com/watch?v=xn4ZHQJ LWHM&feature=
youtu.be www.icynene.co.uk
WWW.HBDONLINE.CO.UK
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