** Shares of building materials supplier Ibstock IBST.L down 4.83% at 114.4p
** Co says Middle East turmoil expected to introduce fresh uncertainty
** IBST confident of medium-term prospects but pace and timing of recovery remain uncertain
** Adds that after weather impacted 2026 start, residential construction and RMI markets expected to remain challenging in H1
** Peer SIG Plc SHI.L on Wednesday flagged weaker-than-expected sales in 2026 due to poor weather across Europe
** Stock fell 17.41% YTD
(Reporting by Megha Anilkumar Nair)
((MeghaAnilkumar.Nair@thomsonreuters.com;))