Insulation and roofing group SIG has hired a new chairman.
Andrew Allner, 63, joins in November following the departure of Leslie Van de Walle, 61.
Allner is also chairman of bus and trains company Go-Ahead, quarrying group Fox Marble and paving firm Marshalls.
Marshalls said it was now looking for a new chairman.
Allner is an Oxford graduate and chartered accountant whose previous jobs include acting as finance director of RHM and chief executive of Enodis.