Many houses built over the past number of years have no cavity wall insulation or have an empty cavity with a dry lining slab on the inside of external walls.
The empty cavity can be filled using Envirobead Cavity Wall Insulation giving the house a much needed improvement on heat retention.
The installation process is quite simple. There are a series of 22mm holes (about the size of a euro coin) drilled strategically in the external walls. Then the Envirobead is pumped in at these points with an adhesive added at the point of entry.
When finished, the holes are filled with cement and a dye used where necessary. It may be necessary to carry out a boroscope test where it is uncertain as to the existence of cavity wall or cavity block.
There are realistic savings of 25% of heat loss and a payback time of between four and six years.
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