The roof of Widnes Market is to be replaced, but it will remain open during the proposed five-month revamp.
Cunard Construction is carrying out the £960,000 contract as part of Halton Council’s capital works programme.
The market hall was constructed in 1995 and the local authority says the roof is now coming to the end of its useful life and is in need of significant maintenance and refurbishment works.
Cllr Ron Hignett, executive board member for the physical environment, said: “Widnes Market has a long tradition of serving the local and sub regional customers and while the works being carried out to improve the market hall, this tradition of quality service and good value will continue.
“The council has already been working to improve the market hall with the recent introduction of low energy lighting.
“The new roof will complete another programme of spending to ensure the market’s energy and running costs are kept as low as possible, and to help reduce the council’s carbon footprint.”