The escalating conflict between the US and Iran has triggered a significant inflation shock in India's construction material sector, affecting companies from cement to paints. Since the conflict began on February 28, 2026, major cement firms like UltraTech Cement and Ambuja Cements have seen stock declines of 6.2% and 8.3%, respectively. The rise in crude oil prices has led to increased costs for imported fuels, notably pet coke, which has surged from an average of $118 per tonne to $160 per tonne. Analysts warn that cement companies may need to raise prices to protect their margins, with expected price hikes in the next 4-6 weeks. The paint sector is also feeling the pressure, as 55% of paint raw materials come from crude oil derivatives, and a $1 increase in crude can reduce Ebitda margins by 0.25%. Analysts anticipate earnings downgrades for the cement sector of 7-8% for FY27, while premium paint stocks like Asian Paints may struggle to maintain their high valuations amidst margin compression. Despite these challenges, some analysts suggest that valuations for certain small-cap companies have become attractive, encouraging investors to consider quality stocks.