The merger saw four regional offices closed and 22 staff lose jobs as the businesses came under one strengthened management team.
Silverdell also invested £400,000 in scaffolding to broaden its offering beyond traditional asbestos removal into wider industrial services.
Details of the shake-up were revealed in first half results which showed revenues ahead 12% at £31.4m and gross profits up 16% at £8.9m.
Chairman Stuart Doughty, said: “Whilst market conditions were exceptionally difficult at the start of the year, and remain challenging, record revenues in March and strong revenues in April and May, allied to a record order book, mean that we remain confident of achieving expectations for the full year.
He said the recent £18.6m acquisition of demolition specialist EDS transformed Silverdell and gave it the critical mass to secure work in industrial overseas.
“We now have the scale, capability and customer base to go from strength to strength and we are about to embark on an entirely new stage in Silverdell’s growth.”
Silverdell’s higher margin consulting business performed exceptionally well with revenues up 89% compared to the first half of 2011, due to the acquisitions of AH Allen and RDS.
Consulting now accounts for 22% of total sales.