Exhibit 99.1 BEACON REPORTS FIRST QUARTER 2024 RESULTS • Record first quarter net sales driven by growth across all three lines of business • Disciplined execution led to better-than-expected gross margin • Footprint expansion from acquired and newly opened branches enhancing customer reach and service • Added to our rapidly growing specialty waterproofing distribution platform with recent acquisition of Smalley & Co. • Continued execution on Ambition 2025 including strong growth in digital, expanded privat ...