In a letter to Lenard responding to the article, Stephen Ratcliffe, chief executive of the Construction Confederation, said the assertions that builders were lacking in innovation and slow to grasp ideas "would be laughable if they were not serious".
Michael Ankers, chief executive at the Construction Products Association, said that Lenard's comments "did not do justice to the significant developments in the construction products industry over the past 20 years".
In a letter to Lenard, Ankers added: "Computer-aided manufacture is far more widespread than you give us credit for."
Contractors, too, are furious about Lenard's comments. John Spanswick, chairman at Bovis Lend Lease Europe, Middle East and Africa told Building: "There has been huge innovation: 50-60% of our work is with regular clients, all of which demand continuous improvement."