Executives blamed the coldest March since 1910 in part for the drop in sales.
In a statement the company said: "Underlying activity was in line with expectations but the delay in the normal seasonal upturn due to adverse working conditions, including the coldest March since 1910, reduced revenue in the period."
However it went on to say that orders had recovered strongly since the middle of April.
This, combined with cost cutting and other money raising activities, started in 2012, would mitigate the sales decline, the statement said.
The majority of Marshall sales, 65 per cent, is to the public sector and commercial end market. These were down six per cent on an ongoing basis.
Domestic sales, 30 per cent of group sales, fell eight per cent. International sales which make up five per cent of group turnover, increased by seven per cent so far this year.
Earlier this year the Group sold quarries and associated aggregate businesses to Breedon Aggregates for £17.5m.