Total sales value for the 13 week period to 29 March climbed to £195m. Like-for-like sales grew by five per cent.
Dunelm has had four store openings over the period including two superstores.
The company has opened 10 superstores so far this financial year. By the end of the year the company believes its superstore portfolio will reach 136.
The company said it was continuing to invest in strengthening its customer proposition. These investments include development in multi-channel, the roll-out of the Dunelm at Home proposition, and TV advertising.
Nick Wharton, chief executive, commented:
Dunelm has again delivered a period of solid progress. This reflects, in part, our willingness to invest to underpin the longer-term growth of the business - including in increased advertising to build brand awareness, further enhancing our home delivery proposition, and expanding our in-home consultation service. These investments will continue, increasing our operating cost ratio whilst benefiting sales and further strengthening our market leading proposition.