In a court judgement, Chancellor John Bullimore of the Blackburn Diocese said that installing a carpet at St Lawrence's Church in Barton would help to make the church more accessible to children.
The Victorian Society had opposed plans for the new carpet because it would cover up "handsome" Minton tiles.
The Victorian Society argued that mats should be introduced for children to sit on instead.
But the chancellor concluded that it was more important to encourage children to attend church than to display decorative tiles.
Minton's Ltd made decorated tiles during the Victorian era.
They were made popular by architect Augustus Pugin, one of the most noteworthy church designers of his time.
St Lawrence is a grade II listed building built in 1896.
It was designed by Richard Knill Freeman who also responsible for Derby Museum and Art Gallery.