The faith and music festival continues to seek a new home as it prepares to leave Boughton House.
A roof is being replaced with Collyweston slates sourced from reclaimed stock from the estate.
The Proclaimers will also appear at the festival's final event at Boughton House.
The road in Northampton links two major routes and will help ease congestion, the council says.
The work is being carried out so the £54.5m Northampton North-West Relief Road can open.
Work is due to begin at a school where pupils had to move out two years ago due to safety issues.
The former Labour leader Jeremy Corbyn appears at a popular weekend arts, faith and justice festival.
The trust that runs the school aims to build and reopen its replacement by next September.
Timescales for the demolition and rebuilding of a primary school are revealed in council papers.
