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How NHC plans to lift uptake of EPS technology among builders

The use of EPS panels cuts building costs by up to 30%.

Updated

EPS panels house in Nairobi.
NHC workers construct a sample EPS panels house in Nairobi. PHOTO | FILE

The National Housing Corporation is set to embark on a campaign to promote the use of expanded polystyrene (EPS) building technology as it seeks new markets for its construction materials.

The state corporation, which opened an EPS factory in Mlolongo in 2012, has identified Eldoret as a strategic launch pad for its western Kenya campaigns with plans to build a high rise in the area.

NHC has sought regulatory approval to apply the EPS technology in construction of a 14-storey residential building near Eldoret town comprising 180 one-bedroom units and two studios.

The apartment will be built on 6.64 acres at the NHC Kapsuswa Rental Housing Scheme – about 3km from the Eldoret Central Business District.

NHC said that the 500 million project, which targets low income families, will help spread technical skills on the use of EPS technology beyond Nairobi where a sizeable number of developers are already using EPS panels.

The company is particularly keen on enlightening upcountry builders on availability and benefits of EPS walls, staircases, and floor panels.

“The use of EPS panels as a substitute to traditional materials used in erecting walls, staircases, floors and roofs is expected to reduce construction periods as well as direct and indirect building costs,” NHC said in its filings with the National Environment Management Authority (Nema).

How EPS panels work

EPS panels for construction are made of a light cellular plastic, a by-product of oil refining, which comprises tiny circular particles containing nearly 100 per cent air.

To make the panels, polystyrene foam is inserted between two slabs of steel wire mesh. Once these have been fused together, they are spewed with cement to support and reinforce the walls.

The air bubbles trapped in the foam means EPS houses offer better control of climatic conditions compared to houses made of concrete or wood. Since air is a poor conductor of heat, the building remains cool when it is hot outside and warm when external temperatures are low.

READ: NHC’s bold plan for low cost housing

According to the NHC, the use of EPS panels cuts down construction period by half while slashing direct and indirect building costs by 30 per cent.

In December 2014, the company said there was a shortage of contractors with the skills to undertake housing projects using the EPS technology hence the need to train artisans on application of the technology.

“NHC is about to roll out major housing developments using EPS technology and therefore we plan to build adequate capacity by the end of this year,” then acting MD Henry Maina said.

The company later disclosed its ambitious plan to build at 500,000 houses countrywide within three years in a bid to bridge the country’s housing demand-supply gap, which was then estimated at 200,000 units annually. The NHC houses will be built using EPS technology.

Jayson Maina is a technology reporter with a degree in Computer Science from JKUAT. He has covered emerging technologies and their impact on the construction industry for more than a decade.