The Roscommon Galway TD says the price he was quoted increased by 53% in three months.
A former minister from the midlands, who introduced retrofit grants, has been forced to abandon the project on his own home.
Independent Deputy Denis Naughten is halting plans due to high costs.
He says the price quoted for retrofitting his home increased by 53% in three months.
The Roscommon Galway TD says others are experiencing similar issues with contractors: