‘Polyurethane Foam Could Help Bring Homes up to Standard’

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‘Polyurethane Foam Could Help Bring Homes up to Standard’

A fifth of homes in England still do not meet the Decent Homes Standard, according to a report produced by the Department for Communities and Local Government in January.

Shelter, the charity for homelessness, goes even further, saying in October 2016 that four in 10 existing homes are not meeting the Living Home Standard - a measure devised by them to determine what makes an acceptable home.

Many of these homes are classed as hard-to-treat and cannot be insulated in the normal way.

The British Urethane Foam Contractors Association (BUFCA), which represents professional installers of sprayed and injected polyurethane foam systems, has several possible answers.

The organisation says that the walls are generally responsible for the largest area of heat loss in such properties, which may have irregular or narrow cavities restricting the use of injected insulation methods, have defective/corroded wall ties, or be unsuitable for external wall insulation due to planning restrictions.

The use of injected polyurethane foam can provide the best solution for these properties, says BUFCA.

The polyurethane insulant is a two-component liquid system which produces a highly-efficient blanket of insulation with an exceptional thermal conductivity figure. Systems can be applied to various depths and have K-values in the range of 0.025 to 0.028W/mK.

Superior performing insulant
For cavity wall insulation, injected polyurethane foam provides a superior performing insulant which also helps to bond the inner and outer leaves providing strength to the building.

Air leakage through the cavity can be reduced to zero. Because of the greater thermal performance and the reduced air leakage polyurethane foam outperforms all other forms of cavity fill. Injected polyurethane cavity wall insulation can be used in flood-plain areas to provide an additional barrier against water ingress through the walls.

A closed cell sprayed polyurethane can also be used to insulate roofs to superior insulation standards – it has one of the highest insulation values commercially available. It also helps to achieve excellent structural stability for a building, adhering to the building substrate and setting quickly to form a rigid layer.

A BUFCA 25-year insurance warranty is available for cavity wall insulation projects.


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